NIOS Class 10 April 2024 Question Paper Science and Technology

This Question Paper consists of 43 questions and 24 printed pages.
ß‚ ¬˝‡Ÿ-¬òÊ ◊¥ 43 ¬˝‡Ÿ ÃÕÊ 24 ◊ÈÁŒ˝Ã ¬Îc∆U „Ò¥–

Roll No. Code No.
•ŸÈ∑˝§◊Ê¥∑§ ∑§Ê«U Ÿ¥.
67/OS/1
SET/‚ ≈ A
SCIENCE AND TECHNOLOGY
ÁflôÊÊŸ ∞fl¥ ¬˝ÊÒlÊÁª∑§Ë
(212)
Day and Date of Examination :
(¬⁄UˡÊÊ ∑§Ê ÁŒŸ fl ÁŒŸÊ¥∑§)
Signature of Invigilators :
(ÁŸ⁄UˡÊ∑§Ê¥ ∑§ „SÃÊˇÊ⁄U) 1.

2.

General Instructions :
1. Answers of all questions are to be given in the Answer-Book given to you.
2. 15 minute time has been allotted to read this Question Paper. The question paper will be distributed
at 02.15 p.m. From 02.15 p.m. to 02.30 p.m., the students will read the question paper only and
will not write any answer on the Answer-Book during this period.
3. Candidate must write his/her Roll Number on the first page of the Question Paper.
4. Please check the Question Paper to verify that the total pages and the total number of questions
contained in the Question Paper are the same as those printed on the top of the first page. Also
check to see that the questions are in sequential order.
5. For the objective-type of questions, you have to choose any one of the four alternatives given in the
question, i.e. (A), (B), (C) and (D) and indicate your correct answer in the Answer-Book given to
you.
6. All the questions including objective-type questions are to be answered within the allotted time
and no separate time limit is fixed for answering objective-type questions.
7. Making any identification mark in the Answer-Book or writing Roll Number anywhere other than
the specified places will lead to disqualification of the candidate.
8. Write your Question Paper Code No. 67/OS/1-A on the Answer-Book.
9. (a) The Question Paper is in English/Hindi medium only. However, if you wish, you can answer
in any one of the languages listed below :
English, Hindi, Urdu, Punjabi, Bengali, Tamil, Malayalam, Kannada, Telugu, Marathi, Oriya,
Gujarati, Konkani, Manipuri, Assamese, Nepali, Kashmiri, Sanskrit and Sindhi.
You are required to indicate the language you have chosen to answer in the box provided in
the Answer-Book.
(b) If you choose to write the answer in the language other than Hindi and English, the
responsibility for any errors/mistakes in understanding the questions will be yours only.

67/OS/1-212-A ] 1 [ Contd...

‚Ê◊Êãÿ •ŸÈŒ‡Ê —
1. ‚÷Ë ¬˝‡ŸÊ¥ ∑§ ©ûÊ⁄U •Ê¬∑§Ê ŒË ªÿË ©ûÊ⁄U-¬ÈÁSÃ∑§Ê ◊¥ „Ë Á‹π¥–
2. ß‚ ¬˝‡Ÿ-¬òÊ ∑§Ê ¬…∏Ÿ ∑§ Á‹∞ 15 Á◊Ÿ≈U ∑§Ê ‚◊ÿ ÁŒÿÊ ªÿÊ „Ò– ¬˝‡Ÿ-¬òÊ ∑§Ê ÁflÃ⁄UáÊ ŒÊ¬„⁄U ◊¥ 02.15 ’¡ Á∑§ÿÊ ¡Ê∞ªÊ–
02.15 ’¡ ‚ 02.30 ’¡ Ã∑§ ¿UÊòÊ ∑§fl‹ ¬˝‡Ÿ-¬òÊ ∑§Ê ¬…∏¥ª •ÊÒ⁄U ß‚ •flÁœ ∑§ ŒÊÒ⁄UÊŸ fl ©ûÊ⁄U-¬ÈÁSÃ∑§Ê ¬⁄U ∑§Ê߸ ©ûÊ⁄U Ÿ„Ë¥
Á‹π¥ª–
3. ¬⁄UˡÊÊÕ˸ ¬˝‡Ÿ-¬òÊ ∑§ §¬„‹ ¬Îc∆U ¬⁄U •¬ŸÊ •ŸÈ∑˝§◊Ê¥∑§ •fl‡ÿU Á‹π¥–
4. ∑Χ¬ÿÊ ¬˝‡Ÿ-¬òÊ ∑§Ê ¡ÊÚ°ø ‹¥ Á∑§ ¬˝‡Ÿ-¬òÊ ∑§ ∑ȧ‹ ¬Îc∆UÊ¥ ÃÕÊ ¬˝‡ŸÊ¥ ∑§Ë ©ÃŸË „Ë ‚¥ÅUÿÊ „Ò Á¡ÃŸË ¬˝Õ◊ ¬Îc∆ ∑ §‚’‚ ™§¬⁄U
¿U¬Ë „Ò– ß‚ ’Êà ∑§Ë ¡ÊÚ°ø ÷Ë ∑§⁄U ‹¥ Á∑§ ¬˝‡Ÿ ∑˝ Á◊∑§ UM§¬ ◊¥ „Ò¥–
5. flSÃÈÁŸc∆U ¬˝‡ŸÊ¥ ◊¥ •Ê¬∑§Ê øÊ⁄U Áfl∑§À¬Ê¥ (A), (B), (C) ÃÕÊ (D) ◊¥ ‚ ∑§Ê߸ ∞∑§ ©ûÊ⁄U øÈŸŸÊ „Ò ÃÕÊ ŒË ªß¸ ©ûÊ⁄U-¬ÈÁSÃ∑§Ê ◊¥
‚„Ë ©ûÊ⁄U Á‹πŸÊ „Ò–
6. flSÃÈÁŸc∆U ¬˝‡ŸÊ¥ ∑§ ‚ÊÕ-‚ÊÕ ‚÷Ë ¬˝‡ŸÊ¥ ∑§ ©ûÊ⁄U ÁŸœÊ¸Á⁄Uà •flÁœ ∑§ ÷ËÃ⁄U „Ë ŒŸ „Ò¥– flSÃÈÁŸc∆U ¬˝‡ŸÊ¥ ∑§ Á‹∞ •‹ª ‚
‚◊ÿ Ÿ„Ë¥ ÁŒÿÊ ¡Ê∞ªÊ–
7. § ©ûÊ⁄U-¬ÈÁSUÃ∑§Ê ◊¥ ¬„øÊŸ-Áøq ’ŸÊŸ •ÕflÊ ÁŸÁŒ¸c≈U SÕÊŸÊ¥ ∑§§•ÁÃÁ⁄UÄà ∑§„Ë¥ ÷Ë •ŸÈ∑˝§◊Ê¥∑§ Á‹πŸ ¬⁄U ¬⁄UˡÊÊÕ˸ ∑§Ê •ÿÊÇÿ
∆U„⁄UÊÿÊ ¡ÊÿªÊ–
8. •¬ŸË ©ûÊ⁄U-¬ÈÁSUÃ∑§Ê ¬⁄U ¬˝‡Ÿ-¬òÊ ∑§Ê ∑§Ê«U Ÿ¥. 67/OS/1-A Á‹π¥–
9. (∑§) ¬˝‡Ÿ-¬òÊ ∑§fl‹ •¥ª˝¡Ë/Á„¥ŒË ◊¥ „Ò– Á»§⁄U ÷Ë, ÿÁŒ •Ê¬ øÊ„¥ ÃÊ ŸËø ŒË ªß¸ Á∑§‚Ë ∞∑§ ÷Ê·Ê ◊¥ ©ûÊ⁄ Œ ‚∑§Ã „Ò¥ —
•¥ª˝¡Ë, Á„¥ŒË, ©ŒÍ¸, ¬¥¡Ê’Ë, ’°ª‹Ê, ÃÁ◊‹, ◊‹ÿÊ‹◊, ∑§ãŸ«∏, Ã‹ÈªÍ, ◊⁄UÊ∆UË, ©Á«∏ÿÊ, ªÈ¡⁄UÊÃË, ∑§Ê¥∑§áÊË, ◊ÁáʬÈ⁄UË,
•‚Á◊ÿÊ, Ÿ¬Ê‹Ë, ∑§‡◊Ë⁄UË, ‚¥S∑Χç•ÊÒ⁄U Á‚¥œË–
∑Χ¬ÿÊ ©ûÊ⁄U-¬ÈÁSÃ∑§Ê ◊¥ ÁŒ∞ ª∞ ’ÊÚÄ‚ ◊¥ Á‹π¥ Á∑§ •Ê¬ Á∑§‚ ÷Ê·Ê ◊¥ ©ûÊ⁄U Á‹π ⁄U„ „Ò¥–
(π) ÿÁŒ •Ê¬ Á„¥ŒË ∞fl¥ •¥ª˝¡Ë ∑§ •ÁÃÁ⁄UÄà Á∑§‚Ë •ãÿ ÷Ê·Ê ◊¥ ©ûÊ⁄U Á‹πÃ „Ò¥, ÃÊ ¬˝‡ŸÊ¥ ∑§Ê ‚◊¤ÊŸ ◊¥ „ÊŸ flÊ‹Ë
òÊÈÁ≈UÿÊ¥/ª‹ÁÃÿÊ¥ ∑§Ë Á¡ê◊UŒÊ⁄Ë ∑ fl‹ •Ê¬∑§Ë „ÊªË–

67/OS/1-212-A ] 2 [ Contd...

SCIENCE AND TECHNOLOGY
ÁflôÊÊŸ ∞fl¥ ¬˝ÊÒlÊÁª∑§Ë
(212)
Time : 2½ Hours ] [ Maximum Marks : 85
‚◊ÿ — 2½ ÉÊá≈U ] [ ¬ÍáÊÊZ∑§ — 85
Note :
(i) This question paper consists of 43 questions in all.
(ii) All questions are compulsory.
(iii) Marks are given against each question.
(iv) Section - A consists of
(a) Q.No. 1 to 17 - Multiple Choice type questions (MCQs) carrying 1 mark each. Select and
write the most appropriate option out of the four options given in each of these questions.
An internal choice has been provided in some of these questions. You have to attempt
any one of the given choices in such questions.
(b) Q.No. 18 to 28 - Objective type questions. Q.No. 18 to 27 carry 2 marks each (with 2 sub-
parts of 1 mark each) and Q.No. 28 carries 5 marks (with 5 sub-parts of 1 mark each).
Attempt these questions as per the instructions given for each of the questions 18 to 28.
(v) Section - B consists of
(a) Q.No. 29 to 34 - Very Short Answer type questions carrying 2 marks each to be answered in
the range of 30 to 50 words.
(b) Q.No. 35 to 41 - Short Answer type questions carrying 3 marks each to be answered in the
range of 50 to 80 words.
(c) Q.No. 42 to 43 - Long Answer type questions carrying 5 marks each to be answered in the
range of 80 to 120 words.
ÁŸŒ¸‡Ê —
(i) ß‚ ¬˝‡Ÿ-¬òÊ ◊¥ ∑ȧ‹ 43 ¬˝‡Ÿ „Ò¥–
(ii) ‚÷Ë ¬˝‡Ÿ •ÁŸflÊÿ¸ „Ò¥–
(iii) ¬˝àÿ∑§ ¬˝‡Ÿ ∑§ ‚Ê◊Ÿ ©‚∑§ •¥∑§ ÁŒ∞ ª∞ „Ò¥–
(iv) πá«U - ∑§ ◊¥ ‡ÊÊÁ◊‹ „Ò¥ —
(a) ¬˝‡Ÿ ‚¥ÅÿÊ 1 ‚ 17 Ã∑§ ’„ÈÁfl∑§À¬Ëÿ ¬˝∑§Ê⁄U ∑§ ¬˝‡Ÿ „Ò¥ •ÊÒ⁄U ¬˝àÿ∑§ 1 •¥∑§ ∑§Ê „Ò– ߟ◊¥ ‚ ¬˝àÿ∑§ ¬˝‡Ÿ ◊¥ ÁŒ∞ ª∞
øÊ⁄U Áfl∑§À¬Ê¥ ◊¥ ‚ ‚’‚ ©¬ÿÈÄà Áfl∑§À¬ ∑§Ê øÿŸ ∑§⁄U Á‹πŸÊ „Ò– ߟ◊¥ ‚ ∑ȧ¿U ¬˝‡ŸÊ¥ ◊¥ •Ê¥ÃÁ⁄U∑§ Áfl∑§À¬ ÁŒ∞ ª∞
„Ò¥– •Ê¬∑§Ê ∞‚ ¬˝‡ŸÊ¥ ◊¥ ÁŒ∞ ª∞ Áfl∑§À¬Ê¥ ◊¥ ‚ ∑§fl‹ ∞∑§ Áfl∑§À¬ ∑§Ê „Ë ©ûÊ⁄U Á‹πŸÊ „ÊªÊ–
(b) ¬˝‡Ÿ ‚¥ÅÿÊ 18 ‚ 28 Ã∑§ flSÃÈÁŸc∆U ¬˝∑§Ê⁄U ∑§ ¬˝‡Ÿ „Ò¥– ¬˝‡Ÿ ‚¥ÅÿÊ 18 ‚ 27 Ã∑§ ¬˝àÿ∑§ ¬˝‡Ÿ 2 •¥∑§ ∑§ „Ò¥
(¬˝àÿ∑§ 1 •¥∑§ ∑§ 2 ©¬-÷ʪÊ¥ ∑§ ‚ÊÕ) •ÊÒ⁄U ¬˝‡Ÿ ‚¥ÅÿÊ 28, 5 •¥∑§Ê¥ ∑§Ê „Ò (¬˝àÿ∑§ 1 •¥∑§ ∑§ 5 ©¬-÷ʪÊ¥ ∑§
‚ÊÕ) ¬˝àÿ∑§ ¬˝‡Ÿ 18 ‚ 28 ∑§ Á‹∞ ÁŒ∞ ª∞ ÁŸŒ¸‡ÊÊ¥ ∑§ •ŸÈ‚Ê⁄U ߟ ¬˝‡ŸÊ¥ ∑§ ©ûÊ⁄U Á‹π¥–
(v) πá«U - π§ ◊¥ ‡ÊÊÁ◊‹ „Ò¥ —
(a) ¬˝‡Ÿ ‚¥ÅÿÊ 29 ‚ 34 Ã∑§ •Áà ‹ÉÊÈ-©ûÊ⁄UËÿ ¬˝∑§Ê⁄U ∑§ ŒÊ-ŒÊ •¥∑§Ê¥ ∑§ ¬˝‡Ÿ „Ò¥– ߟ ¬˝‡ŸÊ¥ ∑§ ©ûÊ⁄U 30 ‚ 50 ‡ÊéŒÊ¥
◊¥ ÁŒ∞ ¡ÊŸ øÊÁ„∞–
(b) ¬˝‡Ÿ ‚¥ÅÿÊ 35 ‚ 41 Ã∑§ ‹ÉÊÈ-©ûÊ⁄UËÿ ¬˝∑§Ê⁄U ∑§ ÃËŸ-ÃËŸ •¥∑§Ê¥ ∑§ ¬˝‡Ÿ „Ò¥– ߟ ¬˝‡ŸÊ¥ ∑§ ©ûÊ⁄U 50 ‚ 80 ‡ÊéŒÊ¥
◊¥ ÁŒ∞ ¡ÊŸ øÊÁ„∞–
(c) ¬˝‡Ÿ ‚¥ÅÿÊ 42 ‚ 43 Ã∑§ ŒËÉʸ ©ûÊ⁄UËÿ ¬˝∑§Ê⁄U ∑§ ¬Ê°ø-¬Ê°ø •¥∑§Ê¥ ∑§ ¬˝‡Ÿ „Ò¥– ߟ ¬˝‡ŸÊ¥ ∑§ ©ûÊ⁄U 80 ‚ 120 ‡ÊéŒÊ¥
◊¥ ÁŒ∞ ¡ÊŸ øÊÁ„∞–

67/OS/1-212-A ] 3 [ Contd...

SECTION - A / πá«U - ∑§
Q.No. 1 to 17 are the Multiple Choice Questions of 1 mark each. An internal choice has been
provided in some of these questions. You have to attempt only one of the given choices in such
questions.
¬˝‡Ÿ ‚¥ÅÿÊ 1 ‚ 17 Ã∑§ ’„ÈÁfl∑§À¬Ëÿ ¬˝∑§Ê⁄U ∑§ ∞∑§-∞∑§ •¥∑§ ∑§ ¬˝‡Ÿ „Ò¥– ߟ ¬˝‡ŸÊ¥ ◊¥ ‚ ∑ȧ¿U ¬˝‡ŸÊ¥ ◊¥ •Ê¥ÃÁ⁄U∑§ Áfl∑§À¬
ÁŒ∞ ª∞ „Ò¥, •Ê¬∑§Ê¥ ∞‚ ¬˝‡ŸÊ¥ ◊¥ ÁŒ∞ ª∞ Áfl∑§À¬Ê¥ ◊¥ ‚ ∑§fl‹ ∞∑§ Áfl∑§À¬ ∑§Ê „Ë ©ûÊ⁄U Á‹πŸÊ „ÊªÊ–
1. In ancient times people used to make measurements by using their : 1
(A) thumb (B) hand-span (C) first finger (D) all of the above
¬˝ÊøËŸ ∑§Ê‹ ◊¥ ‹Êª ◊ʬŸ „ÃÈ ©¬ÿÊª ∑§⁄UÃ Õ •¬Ÿ —
(A) •¥ªÈc∆UU (B) ’ÊÁ‹‡Ã (C) ¬˝Õ◊Ê (D) ©¬⁄UÊÄà ‚÷Ë

2. Someone has written the mass of a body as given below in different ways. Which of these is 1
written correctly as per rules ?
(A) 100 mg (B) 100 mg (C) 100/mg (D) 100 mgs
Á∑§‚Ë √ÿÁÄà Ÿ ∞∑§ Á¬¥«U ∑§ Œ˝√ÿ◊ÊŸ ∑§Ê ◊ÊŸ, ÁflÁ÷㟠¬˝∑§Ê⁄U ‚ ÁŸêŸflØ Á‹πÊ „Ò– ߟ◊¥ ‚ ÁŸÿ◊ÊŸÈ‚Ê⁄U ∑§ÊÒŸ ‚Ê ‚„Ë
Á‹πÊ ªÿÊ „Ò?
(A) 100 mg (B) 100 mg (C) 100/mg (D) 100 mgs

3. (i) In respect of ionic compounds, which one of the following properties is incorrect ? 1
(A) they are solid and hard.
(B) their melting and boiling points are high.
(C) they are soluble in organic solvents.
(D) they are good conductor of electricity in molten state.
•ÊÿÁŸ∑§ ÿÊÒÁª∑§Ê¥ ∑§ ‚¥’¥œ ◊¥ ÁŸêŸÁ‹Áπà ªÈáÊÊ¥ ◊¥ ‚ ∑§ÊÒŸ ‚Ê ªÈáÊ •‚àÿ „Ò?
(A) ÿ ∆UÊ‚ ∞fl¥ ∑§∆UÊ⁄U „ÊÃ „Ò¥–
(B) ߟ∑§ Œ˝fláÊÊ¥∑§ ∞fl¥ ÄflÕŸÊ¥∑§ ©ìÊ „ÊÃ „¥Ò–
(C) ∑§Ê’¸ÁŸ∑§ Áfl‹Êÿ∑§Ê¥ ◊¥ Áfl‹ÿ „ÊÃ „Ò¥–
(D) ÿ ªÁ‹Ã •flSÕÊ ◊¥ ÁfllÈà ∑§ •ë¿U øÊ‹∑§ „Ò¥–
OR / •ÕflÊ
(ii) If two chlorine atoms share one of their electrons they both attain the stable configuration
of a noble gas which is :
(A) Neon (B) Argon (C) Krypton (D) Xenon
ÿÁŒ ŒÊ Ä‹Ê⁄UËŸ ¬⁄U◊ÊáÊÈ •¬Ÿ ∞∑§-∞∑§ ß‹ÒÄ≈˛UÊÚŸ ∑§Ê ‚ʤÊÊ ∑§⁄UÃ „Ò¥, ÃÊ fl ŒÊŸÊ¥ ∞∑§ ©à∑Χc≈U ªÒ‚ ∑§Ê SÕÊÿË
ÁflãÿÊ‚ ¬˝Êåà ∑§⁄U ‚∑§Ã „Ò¥, ¡Ê „ÊÃË „Ò —
(A) ÁŸÿÊÚŸ (B) •ÊÚª¸Ÿ (C) Á∑˝§å≈UÊÚŸ (D) $¡ËŸÊŸ

67/OS/1-212-A ] 4 [ Contd...

4. (i) Identify which of the following is formed by transfer of electrons : 1

(A) Oxygen (B) Nitrogen

(C) Hydrogen (D) Sodium chloride

¬„øÊŸ ∑§ËÁ¡∞ Á∑§ ß‹ÒÄ≈˛UÊÚŸ ∑§ SÕÊŸÊãÃ⁄UáÊ ‚ ÁŸêŸÁ‹Áπà ◊¥ ‚ ∑§ÊÒŸ ‚Ê ÿÊÒÁª∑§ ’ŸÃÊ „Ò?

(A) •ÊÚÄ‚Ë¡Ÿ (B) ŸÊß≈˛UÊ¡Ÿ

(C) „Êß«˛UÊ¡Ÿ (D) ‚ÊÁ«Uÿ◊ Ä‹Ê⁄UÊß«U

OR / •ÕflÊ

(ii) Consider the formation of a compound in the following manner

Na++Cl−→ X

X in the above reaction is :

(A) solid sodium chloride (B) liquid sodium chloride

(C) gaseous sodium chloride (D) molten sodium chloride

ÁŸêŸÁ‹Áπà …¥Uª ‚ Á∑§‚Ë ÿÊÒÁª∑§ ∑§ ÁŸ◊ʸáÊ ¬⁄U ÁfløÊ⁄U ∑§ËÁ¡∞ —

Na++Cl− → X

©¬⁄UÊÄà •Á÷Á∑˝§ÿÊ ◊¥ X „Ò —

(A) ∆UÊ‚ ‚ÊÁ«Uÿ◊ Ä‹Ê⁄UÊß«U (B) Œ˝fl ‚ÊÁ«Uÿ◊ Ä‹Ê⁄UÊß«U

(C) ªÒ‚Ëÿ ‚ÊÁ«Uÿ◊ Ä‹Ê⁄UÊß«U (D) ªÁ‹Ã ‚ÊÁ«Uÿ◊ Ä‹Ê⁄UÊß«U

5. Which of the following atoms has the largest atomic radius ? 1

(A) C (B) N (C) O (D) F

ÁŸêŸÁ‹Áπà ◊¥ ‚ Á∑§‚∑§Ë ¬⁄U◊ÊÁáfl∑§ ÁòÊíÿÊ ‚’‚ ’«∏Ë „Ò?

(A) C (B) N (C) O (D) F

67/OS/1-212-A ] 5 [ Contd...

6. In the following set ups and of an inclined plane on a table. 1

If a pencil cell ’X’ is released from equal heights on the inclined plane in both the set up
and one by one, the correct observation would be :
(A) the distance moved by the cell on the table is more in set up because this surface
offers more friction as compared to the surface in set up
(B) the distance moved by the cell on the table is more in set up because this surface
offers less friction as compared to set up .
(C) the distance moved by the cell on the table is less in set up because this surface
offers more friction as compared to set up .
(D) the distance moved by the cell on the table is less in set up because this surface
offers less friction as compared to the surface in set up .

∞∑§ ◊¡ ∑§ ™§¬⁄U Œ‡Êʸ∞ •ŸÈ‚Ê⁄U SÕÊÁ¬Ã ∞∑§ •ÊŸÃ‚◊Ë √ÿflSÕÊ•Ê¥ ∞fl¥ ◊¥ —

ÿÁŒ ∞∑§ ¬Ò¥Á‚‹ ‚‹ ’X’ ∑§Ê ‚≈U•¬ •ÊÒ⁄U ŒÊŸÊ¥ ◊¥ •ÊŸÃ‚◊Ë ¬⁄U ’⁄UÊ’⁄U ŒÍ⁄UË ‚ ∞∑§-∞∑§ ∑§⁄U∑§ ¿UÊ«∏Ê
¡ÊÃÊ „Ò, ‚„Ë •fl‹Ê∑§Ÿ „ÊªÊ —
(A) ‚‹ mÊ⁄UÊ ◊¡ ¬⁄U Ãÿ ∑§Ë ªÿË ŒÍ⁄UË ‚≈U•¬ ◊¥ •Áœ∑§ „Ò ÄÿÊ¥Á∑§ ß‚∑§Ë ‚Ä ‚≈U•¬ ∑§Ë ‚Ä ∑§Ë
ÃÈ‹ŸÊ ◊¥ •Áœ∑§ ÉÊ·¸áÊ ¬˝ŒÊŸ ∑§⁄UÃË „Ò–
(B) ‚‹ mÊ⁄UÊ ◊¡ ¬⁄U Ãÿ ∑§Ë ªß¸ ŒÍ⁄UË ‚≈U•¬ ◊¥ •Áœ∑§ „Ò ÄÿÊ¥Á∑§ ÿ„ ‚Ä ‚≈U•¬ ∑§Ë ÃÈ‹ŸÊ ◊¥ ∑§◊
ÉÊ·¸áÊ ¬˝ŒÊŸ ∑§⁄UÃË „Ò–
(C) ‚≈U•¬ ◊¥ ‚‹ mÊ⁄UÊ ◊¡ ¬⁄U Ãÿ ∑§Ë ªß¸ ŒÍ⁄UË ∑§◊ „Ò ÄÿÊ¥Á∑§ ÿ„ ‚Ä ‚≈U•¬ ∑§Ë ÃÈ‹ŸÊ ◊¥ •Áœ∑§
ÉÊ·¸áÊ ¬˝ŒÊŸ ∑§⁄UÃË „Ò–
(D) ‚≈U•¬ ◊¥ ‚‹ mÊ⁄UÊ ◊¡ ¬⁄U Ãÿ ∑§Ë ªß¸ ŒÍ⁄UË ∑§◊ „Ò ÄÿÊ¥Á∑§ ÿ„ ‚Ä ‚≈U•¬ ∑§Ë ÃÈ‹ŸÊ ◊¥ ∑§◊ ÉÊ·¸áÊ
¬˝ŒÊŸ ∑§⁄UÃË „Ò–

67/OS/1-212-A ] 6 [ Contd...

7. The SI unit of ‘g’ is : 1
(A) N (B) Nm2 kg−2 (C) ms−2 (D) m
‘g’ ∑§Ê SI ◊ÊòÊ∑§ „Ò —
(A) N (B) Nm2 kg−2 (C) ms−2 (D) m

8. Which one of the following statements is not correct in regard of energy transformation ? 1
(A) Photosynthesis : Solar energy → Chemical energy of food
(B) Electric bulb : electric energy → Light energy
(C) Loudspeaker : electric energy → Sound energy
(D) Physical exercise : Chemical energy of food → Kinetic energy
™§¡Ê¸ M§¬Ê¥Ã⁄UáÊ ∑§ ‚¥Œ÷¸ ◊¥ ÁŸêŸÁ‹Áπà ◊¥ ‚ ∑§ÊÒŸ-‚Ê ∑§ÕŸ ‚àÿ Ÿ„Ë¥ „Ò?
(A) ¬˝∑§Ê‡Ê ‚¥‡‹·áÊ — ‚ÊÒ⁄U ™§¡Ê¸ → ÷Ê¡Ÿ ∑§Ë ⁄UÊ‚ÊÿÁŸ∑§ ™§¡Ê¸
(B) ÁfllÈà ’À’ — ÁfllÈà ™§¡Ê¸ → ¬˝∑§Ê‡Ê ™§¡Ê¸
(C) ‹Ê©«U S¬Ë∑§⁄U — ÁfllÈà ™§¡Ê¸ → äflÁŸ ™§¡Ê¸
(D) ‡ÊÊ⁄UËÁ⁄U∑§ √ÿÊÿÊ◊ — ÷Ê¡Ÿ ∑§Ë ⁄UÊ‚ÊÿÁŸ∑§ ™§¡Ê¸ → ªÁá ™§¡Ê¸

9. Rate of doing work is called __________. 1
(A) Force (B) Displacement (C) Power (D) Motion
∑§Êÿ¸ ∑§⁄UŸ ∑§Ë Œ⁄U ∑§„‹ÊÃË „Ò __________–
(A) ’‹ (B) ÁflSÕʬŸ (C) ‡ÊÁÄà (D) ªÁÃ

10. A mirror always forms a diminished image of an object, wherever you place the object in 1
front of it. The mirror is :
(A) Plane (B) Concave
(C) Convex (D) None of these, as there is no mirror like this
∞∑§ Œ¬¸áÊ „◊‡ÊÊ Á∑§‚Ë flSÃÈ ∑§Ê flSÃÈ ‚ ¿UÊ≈ UÊ ¬˝ÁÃÁ’ê’ ’ŸÊÃÊ „Ò, øÊ„ flSÃÈ ©‚∑§ ‚Ê◊Ÿ ∑§„Ë¥ ÷Ë ⁄Uπ,¥ ÿ„ Œ¬¸áÊ „Ò —
(A) ‚◊Ë (B) •flË
(C) ©ûÊ‹ (D) ©¬⁄UÊÄà ◊¥ ∑§Ê߸ Ÿ„Ë¥, ÄÿÊ¥Á∑§ ß‚ ¡Ò‚Ê ∑§Ê߸ Œ¬¸áÊ Ÿ„Ë¥ „ÊÃÊ–

11. (i) Which of the following is not a digestive gland ? 1
(A) Liver (B) Gastric gland
(C) Pancreatic islets (D) Wall of intestine
ÁŸêŸÁ‹Áπà ◊¥ ∑§ÊÒŸ-‚Ë ¬Êø∑§ ª˝¥ÁÕ Ÿ„Ë¥ „Ò?
(A) ÿ∑Χà (B) ªÒÁS≈˛U∑§ ª˝¥ÁÕ
(C) •ÇãÿʇÊÿ •Êß‹≈U (D) •Ê¥Ã ∑§Ë ŒËflÊ⁄U
OR / •ÕflÊ
(ii) Which one of the following blood group is a universal donor ?
(A) A (B) B (C) AB (D) O
ÁŸêŸÁ‹Áπà ◊¥ ‚ ∑§ÊÒŸ-‚Ê ⁄UÄà ‚◊Í„ ‚Êfl¸ÁòÊ∑§ ⁄UÄÃŒÊÃÊ „Ò?
(A) A (B) B (C) AB (D) O

67/OS/1-212-A ] 7 [ Contd...

12. (i) Which of the following is used as a male contraceptive device ? 1

(A) Vasectomy (B) Tubectomy

(C) Copper T (D) Hypophysectomy

ÁŸêŸÁ‹Áπà ◊¥ ‚ Á∑§‚∑§Ê ©¬ÿÊª Ÿ⁄U ª÷¸ÁŸ⁄UÊœ∑§ ÿÈÁÄà ∑§ M§¬ ◊¥ Á∑§ÿÊ ¡ÊÃÊ „Ò?

(A) ‡ÊÈ∑˝§flÊÁ„∑§Ê¿UŒŸ (fl‚Ä≈UÊÚ◊Ë) (B) ŸÊ‹Êë¿UŒŸ (≈˜ÿÍ’Ä≈UÊÚ◊Ë)

(C) ∑§ÊÚ¬⁄U T (D) ¬ËÿÍÁ·∑§Ê ©ë¿UŒŸ („߬Ê»§Êß‚Ä≈UÊÚ◊Ë)

OR / •ÕflÊ

(ii) Which of the following human reproductive organ is not present in pair ?

(A) Vas deferens (B) Fallopian tube

(C) Cervix (D) Ovary

ÁŸêŸÁ‹Áπà ◊¥ ‚ Á∑§‚ ◊ÊŸfl ¡ŸŸÊ¥ª ∑§Ê ¡Ê«∏UÊ Ÿ„Ë¥ „ÊÃÊ?

(A) ‡ÊÈ∑˝§flÊÁ„∑§Ê (B) •¥«UflÊÁ„ŸË ∑§Ë¬

(C) ª˝ËflÊ (D) •¥«UʇÊÿ

13. Which of the following is not a method of artificial propagation in plants ? 1

(A) Cutting (B) Layering (C) Gootee (D) Budding

ÁŸêŸÁ‹Áπà ◊¥ ‚ ∑§ÊÒŸ-‚Ë ÁflÁœ ¬ÊÒœÊ¥ ◊¥ ∑ΧÁòÊ◊ ∑§ÊÁÿ∑§ ¡ŸŸ ∑§Ë ÁflÁœ Ÿ„Ë¥ „Ò?

(A) ∑§Á≈¥Uª ‹ªÊ∑§⁄U (B) ŒÊ’ ∑§‹◊ ‹ªÊ∑§⁄U (C) ªÈ≈UË mÊ⁄UÊ (D) ◊È∑ȧ‹Ÿ mÊ⁄UÊ
67/OS/1-212-A ] 8 [ Contd...

14. (i) The following chemical reaction shows the fermentation of carbohydrate like glucose 1
catalysed by an enzyme present in yeast.

Yeast
C 6 H12 O 6 (aq) → 'X'

What is likely to be the product of the reaction represented by ‘X’ ?
(A) CH3CH2OH+CO2 (B) CH3OH+CO2
(C) C2H5CH2COOH+CO 2 (D) CH 3COOH+CO 2

ÁŸêŸÁ‹Áπà ⁄UÊ‚ÊÿÁŸ∑§ •Á÷Á∑˝§ÿÊ ∞∑§ ∞¥¡Êß◊ ÿËS≈U/π◊Ë⁄U ∑§Ë ©¬ÁSÕÁà ◊¥ Ç‹Í∑§Ê¡ ¡Ò‚ ∑§Ê’Ê¸„Êß«˛U≈U ∑§
Á∑§áflŸ ∑§Ê Œ‡ÊʸÃË „Ò–
ÿËS≈ / π◊Ë⁄UU
C6 H12 O6 (aq)  → 'X'

‘X’ mÊ⁄UÊ ÁŸM§Á¬Ã •Á÷Á∑˝§ÿÊ ∑§Ê ©à¬ÊŒ ÄÿÊ „ÊŸ ∑§Ë ‚¥÷ÊflŸÊ „Ò ?

(A) CH3CH2OH+CO2 (B) CH3OH+CO2
(C) C2H5CH2COOH+CO 2 (D) CH 3COOH+CO 2

OR / •ÕflÊ
(ii) Which of the word root given in Column-II correctly matches with the number of
carbon atoms given in Column-I ?

Column-I Column-II
No. of Carbon atom Word root
(A) 1 eth
(B) 2 but
(C) 3 prop
(D) 4 meth

∑§ÊÚ‹◊-II ◊¥ ÁŒ∞ ª∞ ◊Í‹ ‡ÊéŒÊ¥ ◊¥ ‚ Á∑§‚∑§Ê ‚„Ë Á◊‹ÊŸ ∑§ÊÚ‹◊-I ◊¥ ŒË ªß¸ ∑§Ê’¸Ÿ ¬⁄U◊ÊáÊÈ•Ê¥ ∑§Ë ‚¥ÅÿÊ
‚ „È•Ê „Ò?

H $ m°b _- I H $ m°b _- II
H $ m~©Z na_mUw H $ s g§» `m _yb eãX
(A) 1 BW
(B) 2 ã`yQ>
(C) 3 àm°n
(D) 4 _rW

67/OS/1-212-A ] 9 [ Contd...

15. (i) A four carbon containing compound Butanone has the functional group : 1
(A) −COOH (B) −CHO (C) −CO− (D) −OH

∞∑§ 4 ∑§Ê’¸Ÿ ÿÈÄà ÿÊÒÁª∑§ éÿÍ≈UŸÊŸ ◊¥ Á∑˝§ÿʇÊË‹ ‚◊Í„ „Ò —
(A) −COOH (B) −CHO (C) −CO− (D) −OH

OR / •ÕflÊ

(ii) The molecular formula of sixth member of homologous series of alkanes is :

(A) C6H14 (B) C6H12 (C) C6H10 (D) C5H10

∞À∑§ŸÊ¥ ∑§Ë ‚¡ÊÃËÿ üÊáÊË ∑§ ¿U∆U ‚ŒSÿ ∑§Ê •ÊÁáfl∑§ ‚ÍòÊ „Ò —
(A) C6H14 (B) C6H12 (C) C6H10 (D) C5H10

16. (i) Which one of the following statements is incorrect in respect of adaptive features in 1
aquatic plants ?

(A) They have reduced root system.

(B) The leaves are thin and narrow.

(C) The shoot system is well organised

(D) Upper surface of leaf is coated with wax.

¡‹Ëÿ ¬ÊÒœÊ¥ ◊¥ •ŸÈ∑ͧ‹Ÿ ∑§ ‚¥Œ÷¸ ◊¥ ÁŸêŸÁ‹Áπà ◊¥ ‚ ∑§ÊÒŸ-‚Ê ∑§ÕŸ •‚àÿ „Ò?
(A) •Áfl∑§Á‚à ◊Í‹Ã¥òÊ (¡«∏¥) „ÊÃË „Ò¥–
(B) ¬ÁûÊÿÊ° ¬Ã‹Ë ∞fl¥ ‚°∑§⁄UË „ÊÃË „Ò¥–
(C) ßÊ-Ã¥òÊ ‚ÈÁfl∑§Á‚à „ÊÃÊ „Ò–
(D) ¬ûÊË ∑§Ë ™§¬⁄UË ‚Ä ¬⁄U ◊Ê◊ ∑§Ë ¬⁄Uà „ÊÃË „Ò–
OR / •ÕflÊ

(ii) Fins of fish help to :

(A) Swim (B) Steer

(C) Maintain Balance (D) All the above

◊¿UÁ‹ÿÊ¥ ∑§ ¬¥π ‚„Êÿ∑§ „ÊÃ „¥Ò —
(A) ÃÒ⁄UŸ ◊¥ (B) ÁŒ‡ÊÊ øÊ‹Ÿ ◊¥
(C) ‚¥ÃÈ‹Ÿ ’ŸÊ∞ ⁄UπŸ ◊¥ (D) ©¬⁄UÊÄà ‚÷Ë

67/OS/1-212-A ] 10 [ Contd...

17. (i) The trapping of a layer of cool air at the ground level by an overlying layer of warm 1
and stagnant air is called :
(A) Thermal inversion (B) Global warming
(C) Incineration (D) Biological magnification
flÊÿÈ◊¥«U‹ ◊¥ ¡’ ©¬Á⁄U‡ÊÊÿË ∞fl¥ ÁŸ‡ø‹ ª◊¸ „flÊ, ∆U¥«UË flÊÿÈ ∑§Ë ¬⁄Uà ∑§Ê ÉÊ⁄U∑§⁄U ÷ÍË ¬⁄U Á‚Á◊à ∑§⁄U ŒÃË „Ò
ÃÊ ß‚ ¬˝∑˝§◊ ∑§Ê ∑§„Ê ¡ÊÃÊ „Ò —
(A) ©c◊Ëÿ ©à∑˝§◊áÊ (B) flÒÁ‡fl∑§ ™§c◊Ÿ
(C) ÷S◊Ë∑§⁄UáÊ (D) ¡ÒÁfl∑§ •Êflœ¸Ÿ
OR / •ÕflÊ
(ii) Which one of the following is not an example of natural environmental problems ?
(A) Earthquakes (B) Floods
(C) Tsunami (D) Afforestation
ÁŸêŸÁ‹Áπà ◊¥ ‚ ∑§ÊÒŸ ‚Ê ¬˝Ê∑ΧÁÃ∑§ ¬ÿʸfl⁄áÊËÿ ‚◊SÿÊ•Ê¥ ∑§Ê ©ŒÊ„⁄UáÊ Ÿ„Ë¥ „Ò?
(A) ÷Í∑§ê¬ (B) ’Ê…∏
(C) ‚ÈŸÊ◊Ë (D) flΡÊÊ⁄UÊ¬áÊ

Questions No. 18 to 27 are the objective questions of 2 marks each. Some of these questions
have 4 sub-parts. You have to do any 2 sub-parts out of 4 sub-parts in such questions.
¬˝‡Ÿ ‚¥ÅÿÊ 18 ‚ 27 Ã∑§ flSÃÈÁŸc∆U ¬˝∑§Ê⁄U ∑§ ŒÊ-ŒÊ •¥∑§Ê¥ ∑§ ¬˝‡Ÿ „Ò¥– ߟ ¬˝‡ŸÊ¥ ◊¥ ‚ ∑ȧ¿U ¬˝‡Ÿ øÊ⁄U ©¬-
÷ʪÊ¥ ∑§ „Ò¥, ∞‚ ¬˝‡ŸÊ¥ ∑§ øÊ⁄U ©¬-÷ʪÊ¥ ◊¥ ‚ •Ê¬∑§Ê ∑§fl‹ ŒÊ ©¬-÷ʪÊ¥ ∑§ ¬˝‡Ÿ ∑§⁄UŸ „Êª–
18. Match Column - I statements with the right option of Column - II. 1x2
Column - I Column - II
(i) SI unit of Pressure (P) Kelvin
(ii) SI unit of Temperature (Q) Celsius
(R) Pascal
(S) Candela
∑§ÊÚ‹◊-I ∑§ ∑§ÕŸÊ¥ ∑§Ê ∑§ÊÚ‹◊-II ∑§ ‚„Ë Áfl∑§À¬Ê¥ ‚ Á◊‹ÊŸ ∑§ËÁ¡∞–
∑§ÊÚ‹◊-I ∑§ÊÚ‹◊-II
(i) ŒÊ’ ∑§Ê SI ◊ÊòÊ∑§ (P) ∑§ÁÀflŸ
(ii) Ãʬ ∑§Ê SI ◊ÊòÊ∑§ (Q) ‚ÁÀ‚ÿ‚
(R) ¬ÊS∑§‹
(S) ∑§ã«U‹Ê

67/OS/1-212-A ] 11 [ Contd...

19. Complete the following sentence by given options below. 1x2
[Attempt any 2 Parts from the following (i to iv)]
(loss, chemical bonding, bad conductor, good conductor, gain)
(i) Atoms of elements in a molecule are held together by __________ .
(ii) Metals form cations by __________ of electrons.
(iii) Formation of anions by non-metals takes place with the __________ of electrons.
(iv) Ethyl alcohol is a __________ of electricity in its aqueous solution.

ÁŸêŸÁ‹Áπà flÊÄÿÊ¥ ∑§Ê ŸËø ÁŒ∞ ª∞ Áfl∑§À¬Ê¥ mÊ⁄UÊ ¬Í⁄UÊ ∑§ËÁ¡∞–
(ÁŸêŸÁ‹Áπà i ‚ iv ◊¥ ‚ Á∑§ã„Ë¥ ŒÊ ÷ʪÊ¥ ∑§Ê „‹ ∑§ËÁ¡∞)
(πÊ∑§⁄U, ⁄UÊ‚ÊÿÁŸ∑§ •Ê’¥œŸ, ∑ȧøÊ‹∑§, ‚ÈøÊ‹∑§, ª˝„áÊ ∑§⁄U)
(i) ∞∑§ •áÊÈ ◊¥ ÃàflÊ¥ ∑§ ¬⁄U◊ÊáÊÈ __________ mÊ⁄UÊ ∞∑§ ‚ÊÕ ¡È«∏ ⁄U„Ã „Ò¥–
(ii) ß‹Ä≈˛UÊÚŸÊ¥ ∑§Ê __________ œÊÃÈ∞° œŸÊÿŸ ’ŸÊÃË „¥Ò–
(iii) ß‹Ä≈˛UÊÚŸÊ¥ ∑§Ê __________ •œÊÃÈ∞° ´§áÊÊÿŸ ’ŸÊÃË „Ò¥–
(iv) ∞ÁÕ‹ ∞À∑§Ê„‹ ∑§Ê ¡‹Ëÿ Áfl‹ÿŸ ÁfllÈà ∑§Ê __________ „ÊÃÊ „Ò–

20. Write TRUE (T) for correct statement and FALSE (F) for incorrect statements. 1x2
[Attempt any two parts from following questions (i to iv)]
(i) The electronic configuration of Argon is 2, 8, 8
(ii) In the formation of sodium chloride, sodium atom gains one electron and chlorine
atom looses one electron.
(iii) Covalent bond is formed by mutual sharing of equal number of electrons between two
atoms.
(iv) Ethyl alcohol produces H+ ions in its aqueous solution.

‚„Ë ∑§ÕŸ ∑§ Á‹∞ ‚àÿ (T) •ÊÒ⁄U ª‹Ã ∑§ÕŸ ∑§ Á‹∞ •‚àÿ (F) Á‹Áπ∞–
[ÁŸêŸÁ‹Áπà ¬˝‡ŸÊ¥ (i) ‚ (iv) ◊¥ ‚ Á∑§ã„Ë¥ ŒÊ ÷ʪÊ¥ ∑§Ê ©ûÊ⁄U Á‹Áπ∞]

(i) •Êª¸Ÿ ∑§Ê ß‹ÒÄ≈˛UÊÚÁŸ∑§ ÁflãÿÊ‚ 2, 8, 8 „Ò–
(ii) ‚ÊÁ«Uÿ◊ Ä‹Ê⁄UÊß«U ∑§ ÁŸ◊ʸáÊ ◊¥, ‚ÊÁ«Uÿ◊ ¬⁄U◊ÊáÊÈ ∞∑§ ß‹ÒÄ≈˛UÊÚŸ ª˝„áÊ ∑§⁄UÃÊ „Ò ÃÕÊ Ä‹Ê⁄UËŸ ¬⁄U◊ÊáÊÈ ∞∑§
ß‹ÒÄ≈˛UÊÚŸ πÊÃÊ „Ò–
(iii) ‚„‚¥ÿÊ¡Ë •Ê’¥œ ŒÊ ¬⁄U◊ÊáÊÈ•Ê¥ ∑§ ◊äÿ ‚◊ÊŸ ‚¥ÅÿÊ ◊¥ ß‹ÒÄ≈˛UÊÚŸÊ¥ ∑§ •Ê¬‚Ë ‚„÷Ê¡Ÿ ‚ ’ŸÃÊ „Ò–
(iv) ∞ÁÕ‹ ∞À∑§Ê„‹ ¡‹Ëÿ Áfl‹ÿŸ ◊¥ H+ •ÊÿŸ ©à¬ãŸ ∑§⁄UÃÊ „Ò–

67/OS/1-212-A ] 12 [ Contd...

21. Read the passage and answer the questions that follow it. (i) to (ii) 1x2
Human circulatory system consists of :
• Centrally located muscular pump called heart and
• Blood vessels which are tube-like structures connected to the heart, these are Arteries,
Veins and Capillaries.

(i) The blood vessels that carry blood from heart are termed as __________ and those that
bring blood from various parts of the body to the heart is termed as __________.
(ii) Name the thin structures that allows the exchange of materials between blood and
tissues.
ªlÊ¥‡Ê ∑§Ê ¬…∏∑§⁄U ÁŒ∞ ª∞ ¬˝‡ŸÊ¥ (i) ∞fl¥ (ii) ∑§ ©ûÊ⁄U Á‹Áπ∞–
◊ŸÈcÿ ∑§ ¬Á⁄U‚¥ø⁄UáÊ Ã¥òÊ ◊¥ ÁŸêŸÁ‹Áπà •¥ª „ÊÃ „Ò¥ —
• ∑§ãŒ˝ ◊¥ ÁSÕà ¬‡ÊËÿ ¬ê¬ Á¡‚ NŒÿ ∑§„Ã „Ò¥ ÃÕÊ
• L§Áœ⁄U flÊÁ„∑§Ê∞° Á¡Ÿ∑§Ë Ÿ‹Ë ∑§ ‚◊ÊŸ ‚¥⁄UøŸÊ∞° „ÊÃË „Ò¥ •ÊÒ⁄U NŒÿ ‚ ¡È«∏Ë „ÊÃË „Ò¥, ÿ œ◊ŸË, Á‡Ê⁄UÊ∞° ÃÕÊ
∑§ÊÁ‡Ê∑§Ê∞° „¥Ò–

(i) NŒÿ ‚ L§Áœ⁄U ‹ ¡ÊŸ flÊ‹Ë L§Áœ⁄U flÊÁ„∑§Ê•Ê¥ ∑§Ê __________ ∑§„Ê ¡ÊÃÊ „Ò •ÊÒ⁄U ‡Ê⁄UË⁄U ∑§ ÁflÁ÷㟠÷ʪÊ¥ ‚
L§Áœ⁄U ∑§Ê NŒÿ Ã∑§ ‹ÊŸ flÊ‹Ë L§Áœ⁄U flÊÁ„∑§Ê•Ê¥ ∑§Ê __________ ∑§„Ê ¡ÊÃÊ „Ò–
(ii) ©‚ ’Ê⁄UË∑§ ‚¥⁄UøŸÊ ∑§Ê ŸÊ◊ ’ÃÊß∞ ¡Ê L§Áœ⁄U ∞fl¥ ™§Ã∑§Ê¥ ∑§ ◊äÿ ¬ŒÊÕÊZ ∑§ •ÊŒÊŸ-¬˝ŒÊŸ ∑§Ê „ÊŸ ŒÃË „Ò–

67/OS/1-212-A ] 13 [ Contd...

22. Read the Passage and answer the Questions (i) and (ii) that follow it. 1x2
RTIs refer to infections of reproductive organs. These illnesses may occur due to poor genital
hygiene. For example, Poor menstrual hygiene among girls. Importantly, RTIs include the
illness that are transmitted from one Person to another Person during sexual contact and are
known as STDs.
(i) Which one of the following is not STDs ?
(A) Syphilis (B) Gonorrhea
(C) AIDS (D) Goitre
(ii) HIV/AIDS is not transmitted by :
(A) Unprotected sexual intercourse (B) Infected blood
(C) Infected mother to her baby (D) Kissing and hugging
ªlÊ¥‡Ê ∑§Ê ¬…∏∑§⁄U ÁŒ∞ ª∞ ¬˝‡ŸÊ¥ (i) •ÊÒ⁄U (ii) ∑§ ©ûÊ⁄U Á‹Áπ∞–
¡ŸŸ flÊÁ„ŸË ‚¥∑˝§◊áÊ (RTIs) ∑§Ê ÃÊà¬ÿ¸ ¡ŸŸ •¥ªÊ¥ ∑§ ‚¥∑˝§◊áÊ ‚ „Ò– ÿ ’Ë◊ÊÁ⁄UÿÊ° ÿÊÒŸ •Ê⁄UÊÇÿ (‚»§Ê߸) ∑§Ë ∑§◊Ë
‚ „ÊÃË „Ò¥– ©ŒÊ„⁄UáÊ ∑§ Á‹∞ ‹«∏Á∑§ÿÊ¥ ◊¥ ◊ÊÁ‚∑§ œ◊¸ ◊¥ Sflë¿UÃÊ ∑§Ë ∑§◊Ë– ◊ÈÅÿ× ¡ŸŸ flÊÁ„ŸË ‚¥∑˝§◊áÊ ‹Ò¥Áª∑§
‚ê¬∑¸§ mÊ⁄UÊ ∞∑§ √ÿÁÄà ‚ ŒÍ‚⁄U ◊¥ ‚¥øÊÁ⁄Uà „ÊÃ „Ò¥ •ÊÒ⁄U ß‚Á‹∞ ßã„¥ ÿÊÒŸ ‚¥øÊÁ⁄Uà ⁄UÊª (STDs) ∑§„Ã „Ò¥–
(i) ÁŸêŸÁ‹Áπà ◊¥ ∑§ÊÒŸ ‚Ê ÿÊÒŸ ‚¥øÊÁ⁄Uà ⁄UÊª (STDs) Ÿ„Ë¥ „Ò¥?
(A) Á‚»§Á‹‚ (©¬Œ¥‡Ê) (B) ªÊŸÊÁ⁄UÿÊ (‚Í¡Ê∑§)
(C) ∞«˜‚ (D) ªÊÿ≈U⁄U
(ii) ∞ø.•Ê߸.flË. (HIV) / ∞«˜‚ Á∑§‚∑§ mÊ⁄UÊ Ÿ„Ë¥ »Ò§‹ÃÊ „Ò?
(A) •‚È⁄UÁˇÊà ‹Ò¥Áª∑§ ‚ê÷Êª (B) ‚¥∑˝§Á◊à ⁄UÄÃ
(C) ‚¥∑˝§Á◊à ◊Ê° mÊ⁄UÊ ©‚∑§ ’ìÊ ∑§Ê (D) øÈ¥’Ÿ ÃÕÊ •ÊÁ‹¥ªŸ ‚

23. Write TRUE (T) for correct statement and FALSE (F) for incorrect statement. 1x2
[Attempt any two Parts from the following questions (i to v)]
(i) HENRY MOSELEY, an English Physicist discovered that the ‘atomic mass’ and not the
‘atomic number’ is the most fundamental property of elements.
(ii) F, Cl, Br, I and At are the non-metallic elements called halogens.
(iii) Metallic character increases in a Period from left to right.
(iv) 1 pm = 10−12 m
(v) If the electronic configuration of an element is 2, 8, 1 then it is a non-metal.
‚„Ë ∑§ÕŸ ∑§ Á‹∞ ‚àÿ (T) ÃÕÊ ª‹ÃU ∑§ÕŸ ∑§ Á‹∞ •‚àÿ (F) Á‹Áπ∞–
(ÁŸêŸÁ‹Áπà ¬˝‡ŸÊ¥ (i) ‚ (v) ◊¥ ‚ Á∑§ã„Ë¥ ŒÊ ÷ʪÊ¥ ∑§ ©ûÊ⁄U Á‹Áπ∞)
(i) ∞∑§ •¥ª˝¡ ÷ÊÒÁÃ∑§ ‡ÊÊSòÊË „Ÿ⁄UË ◊Ê‚‹ Ÿ πÊ¡Ê Á∑§ ÃàflÊ¥ ∑§ ◊ÊÒÁ‹∑§ ªÈáÊ ©Ÿ∑§Ê ¬⁄U◊ÊáÊÈ Œ˝√ÿ◊ÊŸ „Ò Ÿ Á∑§
¬⁄U◊ÊáÊÈ ∑˝§◊Ê¥∑§–
(ii) F, Cl, Br, I ÃÕÊ At •œÊÃÈ Ãàfl „Ò, Á¡ã„¥ „‹Ê¡Ÿ ∑§„Ê ¡ÊÃÊ „Ò–
(iii) Á∑§‚Ë •Êflø ◊¥ ’Ê°ÿ¥ ‚ ŒÊ°ÿ ¡ÊŸ ¬⁄U œÊÁàfl∑§ ªÈáÊ ’…∏ÃÊ „Ò–
(iv) 1 pm =10−12 m
(v) ÿÁŒ Á∑§‚Ë Ãàfl ∑§Ê ß‹Ä≈˛UÊÚÁŸ∑§ ÁflãÿÊ‚ 2, 8, 1 „Ò Ã’ ÿ„ •œÊÃÈ•Ê¥ ∑§ •¥Ãª¸Ã •ÊÃÊ „Ò–

67/OS/1-212-A ] 14 [ Contd...

24. Match Column - I formula with the right option of Column - II. 1x2

Column - I Column - II
(i) H2 SO4 (P) Base
(ii) NaOH (Q) Aqua Regia
(R) King of Chemicals
(S) Neutral salt

∑§ÊÚ‹◊-I ∑§ ‚ÍòÊ ∑§Ê ∑§ÊÚ‹◊-II ∑§ ‚„Ë Áfl∑§À¬Ê¥ ‚ Á◊‹Ê∞°–

H$m°b _ - I H$m°b _ - II
(i) H2 SO4 (P) jma
(ii) NaOH (Q) EŠdm ao{O`m
(R) agm`Zm| H$m amOm
(S) CXmgrZ bdU

25. Fill in the blanks. 1x2

Attempt any two parts from the following questions (i to iv).

(i) A close interaction between two or more different organisms of different species living
in close physical association is termed as __________.

(ii) The __________ rate of a population is the number of individuals dying per thousand
per unit time.

(iii) The process of conversion of ammonia into nitrates is known as __________.

(iv) __________ is the inter-connected food chains.

Á⁄UÄà SÕÊŸÊ¥ ∑§Ë ¬ÍÁø ∑§ËÁ¡∞–

ÁŸêŸÁ‹Áπà ¬˝‡ŸÊ¥ ◊¥ ‚ Á∑§ã„Ë¥ ŒÊ ÷ʪÊ¥ ∑§ ©ûÊ⁄U Á‹Áπ∞– (i) ‚ (iv)

(i) ÷ÊÒÁÃ∑§ ŒÎÁc≈U ‚ ∞∑§-ŒÍ‚⁄U ∑§ ‚„øÿ¸ ◊¥ ⁄U„Ÿ flÊ‹ Á÷㟠S¬Ë‡ÊË¡ ∑§ ŒÊ ÿÊ •Áœ∑§ ¡ËflÊ¥ ∑§Ê ÉÊÁŸc∆U ‚¥’¥œ
__________ ∑§„Ê ¡ÊÃÊ „Ò–

(ii) ¬˝Áà ß∑§Ê߸ ‚◊ÿ ◊¥ ¬˝Áà „¡Ê⁄U √ÿÁÄÃÿÊ¥ ◊¥ ‚ ◊⁄UŸflÊ‹ √ÿÁÄÃÿÊ¥ ∑§Ë ‚¥ÅÿÊ ∑§Ê __________ Œ⁄U ∑§„Ã „Ò¥–

(iii) •◊ÊÁŸÿÊ ∑§Ê ŸÊß≈˛U≈U ◊¥ ¬Á⁄UfløŸ __________ ∑§„‹ÊÃÊ „Ò–

(iv) ¬⁄US¬⁄U ¡È«∏Ë πÊl oÎ¥π‹Ê∞° ∞∑§ __________ ∑§Ê ÁŸ◊ʸáÊ ∑§⁄UÃË „Ò–

67/OS/1-212-A ] 15 [ Contd...

26. Write TRUE (T) for correct statement and FALSE (F) for incorrect statements. 1x2
[Attempt any two parts from the following questions (i to iv)]
(i) Fish and aquatic invertebrates like prawns have gills for respiration.
(ii) Penguins have a hump to store fat.
(iii) Population growth curves are either J-shaped or S-shaped.
(iv) Abiotic components are the organisms which include plants, animals and micro-
organisms in an eco-system.
‚„Ë ∑§ÕŸ ∑§Ê ‚àÿ (T) ÃÕÊ ª‹ÃU ∑§ÕŸ ∑§Ê •‚àÿ (F) Á‹Áπ∞–
ÁŸêŸÁ‹Áπà ¬˝‡ŸÊ¥ ◊¥ ‚ Á∑§ã„Ë¥ ŒÊ ÷ʪÊ¥ ∑§ ©ûÊ⁄U Á‹Áπ∞– (i) ‚ (iv)
(i) ◊¿U‹Ë •ÊÒ⁄U ¤ÊË¥ªÊ ¡Ò‚ ¡‹Ëÿ •∑§‡ÊL§∑§Ë ¡ËflÊ¥ ◊¥ ‡fl‚Ÿ ∑§ Á‹∞ ÁªÀ‚ „ÊÃ „Ò¥–
(ii) ¬¥ªÈߟ ◊¥ fl‚Ê ∑§ ÷¥«UÊ⁄UáÊ ∑§ Á‹∞ ∞∑§ ∑ͧ’«∏-‚Ê „ÊÃÊ „Ò–
(iii) ‚◊Ác≈U flÎÁh ∑§ fl∑˝§ S ÿÊ J •Ê∑§Ê⁄U ∑§ „ÊÃ „Ò¥–
(iv) Á∑§‚Ë ¬ÊÁ⁄UÃ¥òÊ ◊¥ •¡ÒÁfl∑§ ÉÊ≈U∑§Ê¥ ∑§ •¥Ãª¸Ã ¬ÊÒœ, ¡ãÃÈ ÃÕÊ ‚͡◊¡ËflË •ÊÃ „Ò¥–

27. Read the passage carefully. 1x2
According to Newton’s Law of Gravitation, every particle in the universe attracts each other
with a force. This force is directly proportional to the product of their masses and inversely
proportional to the square of the distance between them.
Mathematically,
m m
F α 12 2
r
m1 and m2 are the masses of the two particles separated by a distance r,
m m
or F = G 12 2
r
where G is a constant of Proportionality. It is called Universal Gravitational Constant. Its
value is same everywhere on the earth or in the universe.
The value of G in SI units is 6.67×10−11Nm2kg−2
ªlÊ¥‡Ê ∑§Ê äÿÊŸ ‚ ¬Á…∏∞–
ãÿÍ≈UŸ ∑§ ªÈL§àflÊ∑§·¸áÊ ∑§ ÁŸÿ◊ ∑§ •ŸÈ‚Ê⁄U ’˝rÊÊá«U ◊¥ ¬˝àÿ∑§ ∑§áÊ, ¬˝àÿ∑§ ŒÍ‚⁄U ∑§áÊ ∑§Ê ∞∑§ ’‹ mÊ⁄UÊ •Ê∑§Á·¸Ã
∑§⁄UÃÊ „Ò– ÿ„ ’‹, ©Ÿ∑§ Œ˝√ÿ◊ÊŸ ∑§ ªÈáÊŸ»§‹ ∑§ ‚◊ʟȬÊÃË „ÊÃÊ „Ò ÃÕÊ ©Ÿ∑§ ’Ëø ∑§Ë ŒÍ⁄UË ∑§ √ÿà∑˝§◊ʟȬÊÃË „ÊÃÊ „Ò–
ªÁáÊÃËÿ M§¬ ◊¥,
m 1m 2
Fα
r2
¡„Ê° m1 ∞fl¥ m2 ŒÊ ∑§áÊÊ¥ ∑§ Œ˝√ÿ◊ÊŸ „Ò¥, ¡Ê ∞∑§ ŒÍ‚⁄U ‚ r ŒÍ⁄UË ¬⁄U ÁSÕà „Ò¥–
m 1m 2
•ÕflÊ F= G
r2
¡„Ê° G •ŸÈ¬ÊÁÃ∑§ÃÊ ∑§Ê ∞∑§ ÁSÕ⁄UÊ¥∑§ „Ò, •ÊÒ⁄U ß‚ ‚Êfl¸ÁòÊ∑§ ªÈL§àflËÿ ÁSÕ⁄UÊ¥∑§ ∑§„Ã „¥Ò– ß‚∑§Ê ◊ÊŸ ¬ÎâflË ¬⁄ ‚÷Ë
¡ª„Ê¥ ∞fl¥ ‚ê¬Íáʸ ’˝rÊÊ¥«U ◊¥ ∞∑§ ‚◊ÊŸ „Ò–
G ∑§ SI ◊ÊòÊ∑§Ê¥ ◊¥ G ∑§Ê ◊ÊŸ 6.67×10−11Nm2kg−2 „ÊÃÊ „Ò–U
Now attempt any two parts from the following questions (i to iv) :
•’ ÁŸêŸÁ‹Áπà ¬˝‡ŸÊ¥ (i) ‚ (iv) ◊¥ ‚ Á∑§ã„Ë¥ ŒÊ ÷ʪÊ¥ ∑§ ©ûÊ⁄U Á‹Áπ∞–

67/OS/1-212-A ] 16 [ Contd...

(i) What is the force of gravity acting on an object of mass 2000 kg at the earth’s surface ?
(A) F = 1.962 N (B) F = 19.62 N
(C) F = 1962 N (D) F = 19620 N
¬ÎâflË ∑§Ë ‚Ä ¬⁄U 2000 kg Œ˝√ÿ◊ÊŸ ∑§ Á∑§‚Ë Á¬¥«U ¬⁄U ‹ªŸ flÊ‹Ê ªÈL§àfl ’‹ ∑§Ê ◊ÊŸ Á∑§ÃŸÊ „ÊÃÊ „Ò?
(A) F = 1.962 N (B) F = 19.62 N
(C) F = 1962 N (D) F = 19620 N
(ii) Two spherical objects have masses of 3.1×105 kg and 6.5×103 kg. The gravitational
attraction between them is 65 N. How far apart are their centres ?
(A) 4.5×10−7 m (B) 45.0×10−1 m
(C) 0.45×10 m 2 (D) 450×10−2 m
ŒÊ ªÊ‹Ê∑§Ê⁄U flSÃÈ•Ê¥ ∑§Ê Œ˝√ÿ◊ÊŸ 3.1×105 kg •ÊÒ⁄U 6.5×103 kg „Ò– ߟ∑§ ◊äÿ ªÈL§àflÊ∑§·¸áÊ ’‹ 65 N
„Ò– ©Ÿ∑§Ê ∑§ãŒ˝ Á∑§ÃŸË ŒÍ⁄UË ¬⁄U „Ò?
(A) 4.5×10−7 m (B) 45.0×10−1 m
(C) 0.45×102 m (D) 450×10−2 m
(iii) G is known as universal gravitational constant. Why ?
(A) Its value vary from place to place
(B) Its value is same everywhere
(C) The value of G is very large
(D) The value of G is very small
G ∑§Ê ‚Êfl¸ÁòÊ∑§ ªÈL§àflËÿ ÁSÕ⁄UÊ¥∑§ ∑§„Ê ¡ÊÃÊ „Ò, ÄÿÊ¥?
(A) ß‚∑§Ê ◊ÊŸ ¡ª„ ∑§ ‚ÊÕ ’Œ‹ÃÊ ⁄U„ÃÊ „Ò–
(B) ß‚∑§Ê ◊ÊŸ ‚÷Ë ¡ª„ ∞∑§ ‚◊ÊŸ ⁄U„ÃÊ „Ò–
(C) G ∑§Ê ◊ÊŸ ’„Èà •Áœ∑§ „ÊÃÊ „Ò–
(D) G ∑§Ê ◊ÊŸ ’„Èà ∑§◊ „ÊÃÊ „Ò–
(iv) The gravitational force between m1 and m2 is :

(A) directly proportional to the double of distance between them.
(B) directly proportional to the square of the distance between them.
(C) indirectly proportional to the square of the distance between them.
(D) indirectly proportional to the actual distance between them.
m1 ÃÕÊ m2 ∑§ ◊äÿ ªÈL§àflËÿ ’‹ „ÊªÊ —

(A) ©Ÿ∑§ ’Ëø ∑§Ë ŒÍ⁄UË ∑§ ŒÈªÈŸ ∑§ •ŸÈ∑˝§◊ʟȬÊÃË–
(B) ©Ÿ∑§ ’Ëø ∑§Ë ŒÍ⁄UË ∑§ flª¸ ∑§ •ŸÈ∑˝§◊ʟȬÊÃË–
(C) ©Ÿ∑§ ’Ëø ∑§Ë ŒÍ⁄UË ∑§ flª¸ ∑§ ¬˝ÁËÊ◊ʟȬÊÃË–
(D) ©Ÿ∑§ ’Ëø ∑§Ë flÊSÃÁfl∑§ ŒÍ⁄UË ∑§ ¬˝ÁËÊ◊ʟȬÊÃË–

67/OS/1-212-A ] 17 [ Contd...

28. Read the passage and answer the questions that follow it (i to vii). 1x5
Given below is the circuit diagram to study relationship between Voltage and Current.
ªlÊ¥‡Ê ∑§Ê ¬…∏∑§⁄U ÁŒ∞ ª∞ ¬˝‡ŸÊ¥ ∑§ ©ûÊ⁄U Á‹Áπ∞– (i) ‚ (vii)
Áfl÷fl •ÊÒ⁄U œÊ⁄UÊ ◊¥ ‚¥’¥œ ∑§Ê •äÿÿŸ ∑§⁄UŸ ∑§ Á‹∞ ŸËø ∞∑§ ¬Á⁄U¬Õ ÁøòÊ ÁŒÿÊ ªÿÊ „Ò —

Attempt any five parts from following questions (i) to (vii) :
ÁŸêŸÁ‹Áπà ¬˝‡ŸÊ¥ (i) ‚ (vii) ◊¥ ‚ Á∑§ã„Ë¥ ¬Ê°ø ÷ʪÊ¥ ∑§ ©ûÊ⁄U Á‹Áπ∞–
(i) In the circuit diagram the voltmeter is connected :
(A) in series (B) in parallel
(C) in mixed combination (D) in no particular combination
ÁŒ∞ ª∞ ¬Á⁄U¬Õ •Ê⁄π ◊¥ flÊÀ≈U◊Ë≈U⁄U ¡È«∏Ê „È•Ê „Ò —
(A) üÊáÊË ∑˝§◊ ◊¥ (B) ‚◊ÊãÃ⁄U ∑˝§◊ ◊¥
(C) Á◊ÁüÊà ∑˝§◊ ◊¥ (D) Á∑§‚Ë ÷Ë ∑˝§◊ ◊¥ Ÿ„Ë¥
(ii) Which one of the following sets includes devices that are used in electrical circuits for
their safety ?
(A) Switch, tester and fuse (B) Tester, fuse and MCB
(C) Switch, fuse and MCB (D) MCB, switch and tester
ÁŸêŸ ◊¥ ‚ Á∑§‚ ‚≈U ◊¥ ŒË ªÿË ÿÈÁÄÃÿÊ° ÁfllÈà ¬Á⁄U¬ÕÊ¥ ∑§Ê ‚È⁄UÁˇÊà ⁄UπŸ ∑§ Á‹∞ ©¬ÿÊª ∑§Ë ¡ÊÃË „Ò¥?
(A) ∑È¥§¡Ë, ≈US≈U⁄U ∞fl¥ çÿÍ$¡ (B) ≈US≈U⁄, çÿÍ$¡ ∞fl¥ MCB
(C) ∑È¥§¡Ë, çÿÍ$¡ ∞fl¥ MCB (D) MCB, ∑È¥§¡Ë ∞fl¥ ≈US≈U⁄U
(iii) The following symbol in the above circuit diagram represents :

(A) Resistance (B) Rheostat
(C) Electromagnet (D) Transformer
ÁŸêŸ ¬˝ÃË∑§ ©¬⁄UÊÄà ¬Á⁄U¬Õ •Ê⁄Uπ ◊¥ ÁŒÿÊ ªÿÊ ¬˝ÃË∑§ ¬˝ŒÁ‡Ê¸Ã ∑§⁄UÃÊ „Ò —

(A) ¬˝ÁÃ⁄UÊœ (B) œÊ⁄UÊ ÁŸÿ¥òÊ∑§
(C) ÁfllÈà øÈê’∑§ (D) ≈˛UÊ¥‚»§Ê◊¸⁄U

67/OS/1-212-A ] 18 [ Contd...

(iv) Which law, the above circuit diagram represents ?
(A) Joule’s Law of heating effect (B) Kirchhoff’s Law
(C) Ohm’s Law (D) Coulomb’s Law

©¬ÿȸÄà ¬Á⁄U¬Õ •Ê⁄Uπ Á∑§‚ ÁŸÿ◊ ∑§Ê ¬˝ŒÁ‡Ê¸Ã ∑§⁄UÃÊ „Ò?
(A) ¡Í‹ ∑§Ê ÃʬËÿ ¬˝÷Êfl ∑§Ê ÁŸÿ◊ (B) Á∑§⁄UøÊÒ»§ ∑§Ê ÁŸÿ◊
(C) •Ê◊˜ ∑§Ê ÁŸÿ◊ (D) ∑ͧ‹ÊÚ◊ ∑§Ê ÁŸÿ◊
(v) Which one of the following is the SI unit of electrical energy ?
(A) Volt ampere (B) Kilowatt hour
(C) Watt second (D) Joule

ÁŸêŸÁ‹Áπà ◊¥ ‚ ∑§ÊÒŸ ÁfllÈà ™§¡Ê¸ ∑§Ê SI ◊ÊòÊ∑§ „Ò?
(A) flÊÀ≈U ∞Áê¬ÿ⁄U (B) Á∑§‹ÊflÊ≈U ÉÊ¥≈UÊ
(C) flÊ≈U ‚∑¥§«U (D) ¡Í‹
(vi) For the Verification of Ohm’s Law in laboratory, which of the following items are
required ?
(A) cells, key, resistance wire, voltmeter, galvanometer
(B) cells, key, resistance wire, ammeter, galvanometer
(C) cells, key, resistance wire, voltmeter, ammeter
(D) cells, key, resistance wire, galvanometer

¬˝ÿÊª‡ÊÊ‹Ê ◊¥ •Ê◊ ∑§ ÁŸÿ◊ ∑§ ‚àÿʬŸ ∑§ Á‹∞ ÁŸêŸÁ‹Áπà ◊¥ ‚ ∑§ÊÒŸ ‚ ©¬∑§⁄UáÊ •Êfl‡ÿ∑§ „Ò¥?
(A) ‚‹, ∑È¥§¡Ë, ¬˝ÁÃ⁄UÊœ ÃÊ⁄U, flÊÀ≈U◊Ë≈U⁄U, ªÒÀflŸÊ◊Ë≈U⁄–U
(B) ‚‹, ∑È¥§¡Ë, ¬˝ÁÃ⁄UÊœ ÃÊ⁄U, ∞◊Ë≈U⁄U, ªÒÀflŸÊ◊Ë≈U⁄–U
(C) ‚‹, ∑È¥§¡Ë, ¬˝ÁÃ⁄UÊœ ÃÊ⁄U, flÊÀ≈U◊Ë≈U⁄U, ∞◊Ë≈U⁄–
(D) ‚‹, ∑È¥§¡Ë, ¬˝ÁÃ⁄UÊœ ÃÊ⁄U, ªÒÀflŸÊ◊Ë≈U⁄–U
(vii) Which one of the following is the unit of potential difference ?
(A) Joule/Coulomb (B) Volt/Coulomb
(C) Ampere/second (D) Ohm meter

ÁŸêŸÁ‹Áπà ◊¥ ‚ ∑§ÊÒŸ ‚Ê Áfl÷flÊãÃ⁄U ◊ÊòÊ∑§ „Ò?
(A) ¡Í‹ / ∑ͧ‹ÊÚ◊ (B) flÊÀ≈U / ∑ͧ‹ÊÚ◊
(C) ∞ê¬Ëÿ⁄ / ‚∑¥§«U (D) •Ê◊ ◊Ë≈U⁄U

67/OS/1-212-A ] 19 [ Contd...

SECTION - B / πá«U - π
29. (i) Write the balanced chemical equation for the following statements. 2
(a) Sodium element reacts with oxygen to form sodium oxide.
(b) Iron reacts with steam to form iron oxide and hydrogen gas.
ÁŸêŸÁ‹Áπà ∑§ÕŸÊ¥ ∑§ ‚¥ÃÈÁ‹Ã ⁄UÊ‚ÊÿÁŸ∑§ ‚◊Ë∑§⁄UáÊ Á‹Áπ∞–
(a) ‚ÊÁ«Uÿ◊ Ãàfl •ÊÚÄ‚Ë¡Ÿ ‚ •Á÷Á∑˝§ÿÊ ∑§⁄U∑§ ‚ÊÁ«Uÿ◊ •ÊÚÄ‚Êß«U ’ŸÊÃÊ „Ò–
(b) ‹Ê„Ê÷ʬ ‚ •Á÷Á∑˝§ÿÊ ∑§⁄U∑§ •Êÿ⁄UŸ •ÊÚÄ‚Êß«U •ÊÒ⁄U „Êß«˛UÊ¡Ÿ ªÒ‚ ’ŸÊÃÊ „Ò–
OR / •ÕflÊ
(ii) What is rust ? Mention any two important conditions required for rusting.
¡¥ª ÄÿÊ „ÊÃÊ „Ò? ¡¥ª ‹ªŸ ∑§ Á‹∞ Á∑§ã„Ë¥ ŒÊ ¬˝◊Èπ •Êfl‡ÿ∑§ ¬Á⁄UÁSÕÁÃÿÊ¥ ∑§Ê ©À‹π ∑§ËÁ¡∞–

30. Write the molecular formula and draw the structures of the following compounds. 2
(i) Formic acid (ii) Propanone
ŸËø ÁŒ∞ ª∞ ÿÊÒÁª∑§Ê¥ ∑§ •áÊÈ ‚ÍòÊ Á‹Áπ∞ •ÊÒ⁄U ©Ÿ∑§Ë ‚¥⁄UøŸÊ∞° ’ŸÊß∞–
(i) »§ÊÚÁ◊¸∑§ •ê‹ (ii) ¬˝Ê¬ŸÊŸ

31. Write any two postulates proposed by Niel’s Bohr in Bohr’s Model of hydrogen atom. 2
„Êß«˛UÊ¡Ÿ ¬⁄U◊ÊáÊÈ ◊ÊÚ«U‹ ◊¥ ŸË‹ ’Ê⁄U mÊ⁄UÊ ¬˝SÃÊÁflà ŒÊ •flœÊ⁄UÊáÊÊ∞° Á‹Áπ∞–
OR / •ÕflÊ
State any two results of α-ray scattering experiment explained by Rutherford.
⁄UŒ⁄U»§Ê«¸U mÊ⁄UÊ ŒË ªß¸ √ÿÊÅÿÊ ∑§ α-Á∑§⁄UáÊÊ¥ ∑§ ¬˝∑§ËáʸŸ ¬˝ÿÊª ∑§Ë ∑§Ê߸ ŒÊ ¬Á⁄UáÊÊ◊ ’ÃÊß∞–

32. Explain how a person can get rid of suffering from ‘acidity’ i.e. irritation and occasional pain 2
in the stomach.
√ÿÊÅÿÊ ∑§ËÁ¡∞ Á∑§ ∑§Ê߸ √ÿÁÄà ∞Á‚Á«U≈UË ÿÊÁŸ ¬≈U ◊¥ ¡‹Ÿ •ÊÒ⁄U ∑§÷Ë-∑§÷Ë „ÊŸ flÊ‹ ŒŒ¸ ‚ ∑Ò§‚ ¿ÈU≈U∑§Ê⁄UÊ ¬Ê ‚∑§ÃÊ
„Ò?

33. What is a solenoid ? Draw a sketch to show the magnetic field pattern produced by a 2
current carrying solenoid.
œÊ⁄UÊflÊ„Ë ¬Á⁄UŸÊÁ‹∑§Ê ÄÿÊ „ÊÃË „Ò? œÊ⁄UÊflÊ„Ë ¬Á⁄UŸÊÁ‹∑§Ê mÊ⁄UÊ ©à¬ãŸ øÈê’∑§Ëÿ ˇÊòÊ ¬Ò≈UŸ¸ ∑§Ê Œ‡ÊʸŸ ∑§ Á‹∞ ∞∑§
⁄UπÊÁøòÊ ’ŸÊß∞–
OR / •ÕflÊ
What is an electric generator ? Write the name of its two types.
ÁfllÈà ¡ÁŸòÊ ÄÿÊ „Ò? ÁfllÈà ¡ÁŸòÊ ∑§ ŒÊ ¬˝∑§Ê⁄UÊ¥ ∑§ ŸÊ◊ Á‹Áπ∞–

67/OS/1-212-A ] 20 [ Contd...

34. Define the terms : 2
(i) Osmoregulation (ii) Dialysis
ÁŸêŸ ∑§Ê ¬Á⁄U÷ÊÁ·Ã ∑§ËÁ¡∞ —
(i) ¬⁄UÊ‚⁄UáÊ ÁŸÿ◊Ÿ (ii) «UÊÿÁ‹Á‚‚

35. (i) Look at the activity given below and answer the questions that follow it : 3

(a) What colour change will you observe in test tube A ? 1
(b) What would happen in test tube B ? 1
(c) What the process occurring in test tube B called as ? 1
ŸËø ÁŒ∞ ª∞ Á∑˝§ÿÊ∑§‹Ê¬ ∑§Ê Œπ∑§⁄U ÁŒ∞ ª∞ ¬˝‡ŸÊ¥ ∑§ ©ûÊ⁄U Á‹Áπ∞ —

(a) ¬⁄UπŸ‹Ë A ◊¥ •Ê¬ ÄÿÊ ⁄¥Uª ¬Á⁄UfløŸ ¬˝ÁˇÊà ∑§⁄¥Uª? 1
(b) ¬⁄UπŸ‹Ë B ◊¥ ÄÿÊ „ÊªÊ? 1
(c) ¬⁄UπŸ‹Ë B ◊¥ „ÊŸ flÊ‹Ë ¬˝Á∑˝§ÿÊ ∑§Ê ÄÿÊ ∑§„Ã „Ò¥? 1
OR / •ÕflÊ
(ii) Name the constituents of Baking Powder. Why Baking Powder is used but not used
Baking Soda in bakery ?
’Á∑¥§ª ¬Ê©«U⁄U ∑§ ÉÊ≈U∑§Ê¥ ∑§Ê ŸÊ◊ Á‹Áπ∞– ’∑§⁄UË ◊¥ ’Á∑¥§ª ¬Ê©«U⁄U ∑§Ê ©¬ÿÊª ÄÿÊ¥ Á∑§ÿÊ ¡ÊÃÊ „Ò, ’Á∑¥§ª ‚Ê«∏Ê
∑§Ê ÄÿÊ¥ Ÿ„Ë¥ ?

67/OS/1-212-A ] 21 [ Contd...

36. (a) Write the molecular formula and chemical name of Bleaching Powder. 3
(b) Name the two materials used in the manufacture of Bleaching Powder.
(c) Write the chemical equation that takes place in the manufacture of Bleaching powder
in Hasen-Clever Plant.
(a) é‹ËÁø¥ª ¬Ê©«U⁄ ∑§Ê •áÊÈ ‚ÍòÊ •ÊÒ⁄U ©‚∑§Ê ⁄UÊ‚ÊÿÁŸ∑§ ŸÊ◊ Á‹Áπ∞–
(b) é‹ËÁø¥ª ¬Ê©«U⁄ ’ŸÊŸ ∑§ Á‹∞ •Êfl‡ÿ∑§ ŒÊ ‚Ê◊Áª˝ÿÊ¥ ∑§ ŸÊ◊ Á‹Áπ∞–
(c) „‚Ÿ-Ä‹fl⁄U ‚¥ÿòÊ mÊ⁄UÊ é‹ËÁø¥ª ¬Ê©«U⁄ ∑§ ÁŸ◊ʸáÊ ◊¥ „ÊŸ flÊ‹Ë ⁄UÊ‚ÊÿÁŸ∑§ ‚◊Ë∑§⁄UáÊ Á‹Áπ∞–

37. (i) Calculate the value of acceleration due to gravity of the earth i.e. ‘g’. 3
Given : mass of earth = 6×1024 kg and radius of earth = 6.4×106 kg.
¬ÎâflË ∑§ ªÈL§àflÊ∑§·¸áÊ ∑§ ∑§Ê⁄UáÊ àfl⁄UáÊ i.e. ‘g’ ∑§ ◊ÊŸ ∑§Ë ªáÊŸÊ ∑§ËÁ¡∞–
ÁŒÿÊ ªÿÊ „Ò— ¬ÎâflË ∑§ Œ˝√ÿ◊ÊŸ = 6×1024 kg •ÊÒ⁄U ¬ÎâflË ∑§ ÁòÊíÿÊ = 6.4×106 kg
OR / •ÕflÊ
(ii) An object falls from a height and reaches the ground in 0.5 s, let g = 10 ms−2
(a) What is the speed with which it strikes the ground ?
(b) What is the average speed during the 0.5 s ?
(c) What is the height from the ground from which it was dropped ?
∞∑§ flSÃÈ ™°§øÊ߸ ‚ Áª⁄UÃË „Ò •ÊÒ⁄U 0.5 s ◊¥ ¡◊ËŸ ¬⁄U •Ê ¡ÊÃË „Ò, ◊ÊŸ Á‹Á¡∞ g = 10 ms−2
(a) ÿ„ ¡◊ËŸ ‚ Á∑§ÃŸ flª ‚ ≈U∑§⁄UÊ∞ªË?
(b) 0.5 s ∑§ ŒÊÒ⁄UÊŸ ß‚∑§Ë •ÊÒ‚Ã øÊ‹ ÄÿÊ „Ò?
(c) ÿ„ ¡◊ËŸ ‚ Á∑§ÃŸË ™°§øÊ߸ ‚ Áª⁄UÊ߸ ªß¸ ÕË?

38. (i) Draw the generalized structure of a neuron (nerve cell) and label the following parts 3
on it.
(a) Dendrites (b) Cell body
(c) Axon (d) Nucleus
∞∑§ Ã¥ÁòÊ∑§Ê-∑§ÊÁ‡Ê∑§Ê ∑§Ë ‚Ê◊ÊãÿË∑Χà ‚¥⁄UøŸÊ ’ŸÊ∑§⁄U ©‚ ¬⁄U ÁŸêŸÁ‹Áπà ÷ʪÊ¥ ∑§Ê ŸÊ◊Ê¥Á∑§Ã ∑§ËÁ¡∞–
(a) «UUã«˛UÊß≈U (b) ∑§ÊÁ‡Ê∑§Ê ∑§Êÿ
(c) ∞Ä‚ÊÚŸ (d) ∑§ãŒ˝∑§
OR / •ÕflÊ
(ii) (a) Name the hormone released by thyroid gland. What is its function in our body ?
(b) Define hyperthyroidism
(c) Define hypothyroidism
(a) ÕÊÿ⁄UÊÚß«U ª˝¥ÁÕ mÊ⁄UÊ dÊÁflà „Ê◊ʸŸ ∑§Ê ŸÊ◊ Á‹Áπ∞ ÃÕÊ „◊Ê⁄U ‡Ê⁄UË⁄U ◊¥ ©‚∑§Ê ÄÿÊ ∑§Êÿ¸ „Ò?
(b) •ÁÃÕÊÿ⁄UÊÚß«UÃÊ ∑§Ê ¬Á⁄U÷ÊÁ·Ã ∑§ËÁ¡∞–
(c) •À¬ÕÊÿ⁄UÊÚß«UÃÊ ∑§Ê ¬Á⁄U÷ÊÁ·Ã ∑§ËÁ¡∞–

67/OS/1-212-A ] 22 [ Contd...

39. With the help of a line diagram show the chromosomal basis of sex determination in humans. 3
∞∑§ ⁄UπÊÁøòÊ mÊ⁄UÊ ¬˝ŒÁ‡Ê¸Ã ∑§ËÁ¡∞ Á∑§ ◊ŸÈcÿÊ¥ ◊¥ ªÈáÊ-‚ÍòÊÊ¥ ∑§ •ÊœÊ⁄U ¬⁄U Á‹¥ª ÁŸœÊ¸⁄UáÊ ∑Ò§‚ „ÊÃÊ „Ò?

40. What is meant by Population dispersal ? Explain in brief about the two types of Population 3
dispersal.
¡Ÿ‚¥ÅÿÊ ÁflÃ⁄UáÊ ‚ ÄÿÊ •Á÷¬˝Êÿ „Ò? ¡Ÿ‚¥ÅÿÊ ÁflÃ⁄UáÊ ∑§ ŒÊ ¬˝∑§Ê⁄UÊ¥ ∑§ ’Ê⁄ ◊¥ ‚¥ˇÊ¬ ◊¥ ‚◊¤ÊÊß∞–

41. (i) State the term bio-magnification. 3
(ii) DDT is widely used for crop protection. How is it responsible for the decreased
population of pelicon birds ?
(i) ¡Òfl-•Êflœ¸Ÿ ‡ÊéŒ ∑§Ë √ÿÊÅÿÊ ∑§ËÁ¡∞–
(ii) »§‚‹ ‚È⁄UˇÊÊ ∑§ Á‹∞ DDT ∑§Ê ©¬ÿÊª √ÿʬ∑§ M§¬ ‚ Á∑§ÿÊ ¡ÊÃÊ „Ò– ÿ„ Á∑§‚ ¬˝∑§Ê⁄U ¬‹Ë∑§Ÿ ¬ÁˇÊÿÊ¥ ∑§Ë
•Ê’ÊŒË NÊ‚ ∑§Ê ∑§Ê⁄UáÊ ’ŸÊ „Ò?

42. (i) (a) Define dispersion of white light through a glass prism. Draw a diagram to illustrate 5
it.
(b) Which of the colours bends least and which one bends the most ?
(c) Why does prism show dispersion of white light ?
(a) ∑§Ê°ø ∑§ Á¬˝í◊ mÊ⁄UÊ „ÊŸ flÊ‹ ‡flÃ-¬˝∑§Ê‡Ê ∑§ ÁflˇÊ¬áÊ ∑§Ê ¬Á⁄U÷ÊÁ·Ã ∑§ËÁ¡∞– ∞∑§ ÁøòÊ mÊ⁄UÊ ß‚ ¬˝∑˝§◊
∑§Ê ¬˝ŒÁ‡Ê¸Ã ∑§ËÁ¡∞–
(b) ∑§ÊÒŸ ‚Ê ⁄¥Uª ãÿÍŸÃ◊ ÁfløÁ‹Ã „ÊÃÊ „Ò •ÊÒ⁄U ∑§ÊÒŸ ‚Ê •Áœ∑§Ã◊?
(c) ∑§Ê°ø ∑§Ê Á¬˝í◊ ‡flÃ-¬˝∑§Ê‡Ê ∑§Ê ÁflˇÊ¬áÊ ÄÿÊ¥ Œ‡ÊʸÃÊ „Ò?
OR / •ÕflÊ
(ii) (a) Draw diagrams of the following lenses : 2
Double Convex, Plano Convex, Double Concave, Convexo Concave
(b) Draw diagrams showing the following : 3
- myopic eye
- hypermetropic eye
- relaxed eye
(a) ÁŸêŸÁ‹Áπà ‹Ò¥‚Ê ∑§ •Ê⁄Uπ πË¥Áø∞ —
Ám©ûÊ‹, ‚◊Ë ©ûÊ‹, Ám•flË, ©ûÊ‹ÊflË
(b) ÁŸêŸÁ‹Áπà ∑§Ê Œ‡ÊʸŸ flÊ‹ •Ê⁄Uπ πË¥Áø∞ —
- ÁŸ∑§≈U ŒÎÁc≈U ÿÈÄà ŸòÊ
- ŒÍ⁄UŒÎÁc≈U ÿÈÄà ŸòÊ
- ÁflüÊʥà ŸòÊ

67/OS/1-212-A ] 23 [ Contd...

.

43. (i) Part of the Modern Periodic table is given below where the atomic numbers of the 5
elements of Group ‘A’ and ‘B’ are given in the Parentheses :
Group ‘A’ Group ‘B’
Li (3) Be (4)
Na (11) Mg (12)
K (19) Ca (20)
Rb (37) Sr (38)
(a) Give the electronic configuration of ‘Ca’.
(b) Write the number of valence electrons in the atom ‘K’.
(c) What is the total number of shells in the atom of ‘Na’ ?
(d) Arrange the elements of Group ‘B’ in the increasing order of their atomic size.
(e) State whether ‘Rb’ is a metal or non-metal.
(f) Out of Na, Li, Be and Mg which has the biggest atom in size ?
ŸËø •ÊœÈÁŸ∑§ •Êflø ‚ÊÁ⁄UáÊË ∑§Ê ∞∑§ ÷ʪ ÁŒÿÊ ªÿÊ „Ò, Á¡Ÿ◊¥ ‚◊Í„-• •ÊÒ⁄U ‚◊Í„-’ ∑§ ÃàflÊ¥ ∑§Ë ¬⁄U◊ÊáÊÈ
‚¥ÅÿÊ ∑§Êc∆U∑§ ◊¥ ŒË ªß¸ „Ò —
‚◊Í„ -• ‚◊Í„-’
Li (3) Be (4)
Na (11) Mg (12)
K (19) Ca (20)
Rb (37) Sr (38)
(a) ‘Ca’ ∑§Ê ß‹Ä≈˛UÊÚÁŸ∑§ ÁflãÿÊ‚ Á‹Áπ∞–
(b) ‘K’ ∑§ ¬⁄U◊ÊáÊÈ ◊¥ Á∑§ÃŸ ‚¥ÿÊ¡∑§ÃÊ ß‹Ä≈˛UÊÚŸ „Ò¥?
(c) ‘Na’ ∑§ ¬⁄U◊ÊáÊÈ ◊¥ ∑ȧ‹ Á∑§ÃŸ ∑§Ê‡Ê „Ò¥?
(d) ‚◊Í„-’ ∑§ ÃàflÊ¥ ∑§Ê ߟ∑§ ¬⁄U◊ÊáÊÈ ‚Êß¡ ∑§ ’…∏Ã ∑˝§◊ ◊¥ √ÿflÁSÕà ∑§ËÁ¡∞–
(e) ‘Rb’ œÊÃÈ „Ò ÿÊ •œÊÃÈ?
(f) Na, Li, Be •ÊÒ⁄U Mg ◊¥ ‚ Á∑§‚∑§ ¬⁄U◊ÊáÊÈ ∑§Ê ‚Êß¡ •Áœ∑§Ã◊ „Ò?
(ii) (a) Why do elements of the same group have similar properties ?
(b) How does the atomic size of elements vary in a period with increase in atomic
number ? State reason.
(a) Á∑§‚Ë ‚◊Í„ ∑§ ‚÷Ë ÃàflÊ¥ ∑§ ªÈáÊ ‚◊ÊŸ ÄÿÊ¥ „ÊÃ „¥Ò?
(b) Á∑§‚Ë •Êflø ◊¥ ¬⁄U◊ÊáÊÈ ‚¥ÅÿÊ ’…∏Ÿ ‚ Ãàfl ∑§ ¬⁄U◊ÊáÊÈ ∑§Ê •Ê∑§Ê⁄U (‚Êß¡) Á∑§‚ ¬˝∑§Ê⁄U ¬Á⁄UflÁøà „ÊÃÊ
„Ò •ÊÒ⁄U ÄÿÊ¥?
OR / •ÕflÊ
(iii) (a) The Modern Periodic table has been evolved through the early attempts of
Dobereiner, Newland and Mendeleev. List one advantage and one limitation of
all the three attempts.
(b) Define atomic number ‘Z’ of an element.
(c) State Modern Periodic Law.
(a) •ÊœÈÁŸ∑§ •Êflø ‚Ê⁄UáÊË ∑§Ê Áfl∑§Ê‚ «UÊÚfl⁄UËŸ⁄U, ãÿÍ‹Òá«U •ÊÒ⁄U ◊á«U‹Ëfl ∑§ ¬˝Ê⁄UÁê÷∑§ ¬˝ÿÊ‚Ê¥ ∑§ ◊Êäÿ◊
‚ Á∑§ÿÊ ªÿÊ „Ò– ÃËŸÊ¥ ∑§ ¬˝ÿÊ‚Ê¥ ∑§Ë ∞∑§-∞∑§ ©¬‹Áéœ •ÊÒ⁄U ŒÊ· ∑§Ê ‚ÍøË’h ∑§ËÁ¡∞–
(b) Á∑§‚Ë Ãàfl ∑§Ë ¬⁄U◊ÊáÊÈ ‚¥ÅÿÊ ‘Z’ ∑§Ë ¬Á⁄U÷Ê·Ê ŒËÁ¡∞–
(c) •ÊœÈÁŸ∑§ •Êflø ÁŸÿ◊ ∑§Ê ©À‹π ∑§ËÁ¡∞–

-oOo-

67/OS/1-212-A ] 24 [ Contd...