HBSE Class 10 Question Paper 2019 Science

CLASS : 10th (Secondary) Code No. 4205
Series : Sec. M/2019
Roll No. SET : A

foKku
SCIENCE
(Physics, Chemistry and Life Science)
(Academic/Open)
[ fgUnh ,oa vaxzsth ek/;e ]
[ Hindi and English Medium ]
(Only for Fresh/Re-appear Candidates)

le; : 3 ?k.Vs ] [ iw.kk±d : 60
Time allowed : 3 hours ] [ Maximum Marks : 60

• d`i;k tk¡p dj ysa fd bl iz'u-i= esa eqfnzr i`"B 16 rFkk
iz'u 27 gSaA
Please make sure that the printed pages in this
question paper are 16 in number and it contains 27
questions.

• iz'u-i= esa nkfgus gkFk dh vksj fn;s x;s dksM uEcj rFkk lsV dks
Nk= mÙkj-iqfLrdk ds eq[;-i`"B ij fy[ksaA
The Code No. and Set on the right side of the
question paper should be written by the candidate
on the front page of the answer-book.
4205/(Set : A) P. T. O.

(2) 4205/(Set : A)
• d`i;k iz'u dk mÙkj fy[kuk 'kq: djus ls igys] iz'u dk Øekad
vo'; fy[ksaA
Before beginning to answer a question, its Serial
Number must be written.

• mÙkj-iqfLrdk ds chp esa [kkyh iUuk / iUus u NksMsa+A
Don't leave blank page/pages in your answer-book.

• mÙkj-iqfLrdk ds vfrfjDr dksbZ vU; 'khV ugha feysxhA vr%
vko';drkuqlkj gh fy[ksa vkSj fy[kk mÙkj u dkVsaA
Except answer-book, no extra sheet will be given.
Write to the point and do not strike the written
answer.

• ijh{kkFkhZ viuk jksy ua0 iz'u-i= ij vo'; fy[ksaA
Candidates must write their Roll Number on the
question paper.

• d`i;k iz'uksa ds mÙkj nsus lss iwoZ ;g lqfuf'pr dj ysa fd iz'u-i=
iw.kZ o lgh gS] ijh{kk ds mijkUr bl lEcU/k esa dksbZ Hkh nkok
Lohdkj ugha fd;k tk;sxkA
Before answering the question, ensure that you
have been supplied the correct and complete
question paper, no claim in this regard, will be
entertained after examination.

4205/(Set : A)

(3) 4205/(Set : A)
lkekU; funsZ'k %
General Instructions :

(i) lHkh iz'u vfuok;Z gSaA
All questions are compulsory.

(ii) oLrqfu"B iz'uksa ds lgh fodYi fy[ksaA
Write the correct option in objective type
questions.

(iii) nh?kZ mÙkj okys iz'uksa esa vkarfjd fodYi dk izko/kku gSA
Internal choice has been provided in long
answer type questions.

(iv) izR;sd iz'u ds vad mlds lkeus n'kkZ;s x;s gSaA
Marks of each question are indicated against it.

[k.M – v
SECTION – A [ Marks : 20
¼HkkSfrd foKku½
foKku½
(Physics)

1. vkdk'k dk jax uhyk gksrk gS] izdk'k ds % 1

(A) ijkorZu ls
(B) izdh.kZu ls
(C) fo{ksi.k ls
(D) viorZu ls

4205/(Set : A) P. T. O.

(4) 4205/(Set : A)
The blue colour of sky is due to :

(A) Reflection of light

(B) Scattering of light

(C) Dispersion of light

(D) Refraction of light

2. fuEufyf[kr esa ls dkSu tSoek=k ÅtkZ òksr dk mnkgj.k ugha
gS \ 1

(A) ydM+h
(B) xkscj xSl
(C) ukfHkdh; ÅtkZ
(D) dks;yk
Which of the following is not an example of a
biomass energy source ?

(A) Wood

(B) Gobar gas

(C) Nuclear energy

(D) Coal

4205/(Set : A)

(5) 4205/(Set : A)
3. vfHkus= ysal jsfVuk ij dSlh izÑfr dk izfrfcac cukrk gS \ 1

What type/nature of image is formed by the eye
lens at retina ?

4. pkyd rkj dk izfrjks/k fdu dkjdksa ij fuHkZj djrk gS \ 1

On what factors the resistance of conductor
depends ?

5. thok'eh b±/ku dh D;k gkfu;k¡ gSa \ la{ksi esa o.kZu dhft,A 2

What are the disadvantages of fossil fuel ?
Explain in brief.

6. 2 Ω, 3 Ω, rFkk 6 Ω ds rhu izfrjks/kdksa dks fdl izdkj la;ksftr
djsaxs fd la;kstu dk dqy izfrjks/k 4 Ω gks \ 2

How can three resistors of resistance 2 Ω, 3 Ω,
and 6 Ω be connected to give a total resistance
of 4 Ω ?

7. ty ds HkkSe ty laj{k.k ds D;k ykHk gSa \ 2

What are the advantages of water stored in the
ground ?

4205/(Set : A) P. T. O.

(6) 4205/(Set : A)
8. (a) izdk'k ok;q ls 1.50 viorZukad dh dk¡p dh IysV esa
izos'k djrk gSA dk¡p esa izdk'k dh pky fdruh gS \
fuokZr esa izdk'k dh pky 3 × 108 ms–1 gSA 2

Light enters from air to glass having
refractive index 1.50. What is the speed of
light in glass ? The speed of light in vacuum
is 3 × 108 ms–1.

(b) dksbZ oLrq mÙky ysal ds eq[; Qksdl (F) rFkk 2 F ds e/;
fLFkr gSA ml oLrq ds izfrfcac dh fLFkfr] lkbt+ rFkk izÑfr
dk js[kkfp= cukb,A 2

An object is situated at a position in
between the main focus (F) and 2 F of a
Convex lens. Draw the ray diagram showing
the position, size and nature of image
formed.

9. ukekafdr vkjs[k [khapdj fdlh fo|qr tfu= dk ewy fl)kUr
rFkk dk;Zfof/k Li"V dhft,A blesa czq'kksa dk D;k dk;Z gS \ 6

Explain the underlying principle and working of
an electric generator by drawing a labelled
diagram. What is the function of brushes ?
4205/(Set : A)

(7) 4205/(Set : A)
vFkok
OR

(a) ¶ysfeax dk oke-gLr fu;e D;k gS \ le>kb,A 2

What is the Fleming's Left-Hand Rule ?
Explain.

(b) oS|qr pqacdh; izsj.k ls vkidk D;k vfHkizk; gS \ pkyd
esa izsfjr fo|qr /kkjk dh fn'kk Kkr djus esa ¶ysfeax ds
nf{k.k-gLr fu;e dk D;k mi;ksx gS \ le>kb,A 4

What do you mean by electromagnetic
induction ? Explain the use of Fleming's
right-hand rule in finding the direction of
current induced in the conductor.

[k.M – c
SECTION – B [ Marks : 19
¼jlk;u foKku½
(Chemistry)

10. fuEu jklk;fud vfHkfØ;k esa dkSu-lk vfHkdkjd mipf;r gks
jgk gS \ 1

CuO + H 2 → Cu + H 2O

4205/(Set : A) P. T. O.

(8) 4205/(Set : A)
Which reactant is Oxidized in the following
chemical reaction ?
CuO + H 2 → Cu + H 2O

11. vkids ikl rhu foy;u A, B ,oa C gS]a ftudk pH dk eku
Øe'k% 4, 7 ,oa 10 gSA mijksDr esa ls dkSu-lk foy;u vEyh;
gksxk \ 1

You have three solutions A, B and C whose pH

value is 4, 7 and 10 respectively. Out of above
solutions, which solution is acidic ?

12. rÙo M, MCl lw= okyk ,d DyksjkbM cukrk gSA vkorZ lkj.kh
esa ;g rÙo M laHkor% fdl lewg ds varxZr gksxk \ 1

(A) Si (B) Al

(C) Na (D) Mg

Element M forms a Chloride with formula MCl.

Element M would be most likely in the same
group of Periodic table as :

(A) Si (B) Al

(C) Na (D) Mg

4205/(Set : A)

(9) 4205/(Set : A)
13. foLFkkiu vfHkfØ;kvksa ls vki D;k le>rs gSa \ ,d mnkgj.k
¼jklk;fud lehdj.k½ nhft,A 2

What do you mean by displacement reactions ?
Give one example (Chemical equation).

14. csfdax lksMk dk jklk;fud lw= D;k gS \ bldh fuekZ.k fof/k dk
jklk;fud lehdj.k nhft,A 2

What is chemical formula of baking soda ? Give

chemical equation used in its preparation.

15. vk/kqfud vkorZ lkj.kh es]a lewg esa Åij ls uhps tkus ij
ijek.kq lkbt+ fdl izdkj ifjofrZr gksrh gS \ dkj.k fyf[k,A 2
In modern periodic table how does atomic size

vary on moving down top to bottom in a group ?
Write its reason.

16. (i) /kkrqvksa dks ok;q esa ngu djus ls D;k gksrk gS \ ,d
mnkgj.k nhft,A 2

What happens when metals are burnt in

air ? Give one example.

4205/(Set : A) P. T. O.

( 10 ) 4205/(Set : A)
(ii) /kkrqvksa ds fo|qr vi?kVuh ifj"dj.k ij laf{kIr uksV
fyf[k,A 2

Write short note on electrolytic refining of
metals.

17. (i) fuEufyf[kr ;kSfxdksa dk ukedj.k dhft, % 1×3=3

(a) CH 3 − Cl
O
||
(b) CH 3 − CH 2 − C − OH

(c) CH 3 − CH 2 − CH 2 − OH
Write the names of following compounds :
(a) CH 3 − Cl
O
||
(b) CH 3 − CH 2 − C − OH

(c) CH 3 − CH 2 − CH 2 − OH

(ii) ,FksukWbd vEy fuEu ls fdl izdkj vfHkfØ;k djrk gS \
jklk;fud lehdj.k nhft, % 1×3=3

(a) Na 2CO 3

(b) NaOH

(c) CH 3CH 2OH vEy dh mifLFkfr esa

4205/(Set : A)

( 11 ) 4205/(Set : A)
How ethanoic acid react with the following ?
Give chemical equation :

(a) Na 2CO 3

(b) NaOH

(c) CH 3CH 2OH in presence of acid

vFkok
OR

dkcZu ;kSfxdksa ds fuEufyf[kr xq.kksa dk mnkgj.k lfgr o.kZu
dhft, % 2×3=6

(i) vkWDlhdj.k vfHkfØ;k
(ii) ladyu vfHkfØ;k
(iii) izfrLFkkiu vfHkfØ;k
Explain the following Properties of Carbon

compounds with example :

(i) Oxidation reaction

(ii) Addition reaction

(iii) Substitution reaction

4205/(Set : A) P. T. O.

( 12 ) 4205/(Set : A)
[k.M – l
SECTION – C [ Marks : 21
¼tho foKku½
(Life Science)

18. fuEufyf[kr esa ls dkSu-lk dsoy tSo fuEuhdj.kh; inkFkksZa dk
lewg gS \ 1

(A) IykfLVd] peM+k] ydM+h

(B) ?kkl] IykfLVd] dsys ds fNyds

(C) ydM+h] ?kkl] dsys ds fNyds

(D) peM+k] dkap] dsys ds fNyds

Which of the following is group of only

biodegradable substances ?

(A) Plastic, Leather, Wood

(B) Grass, Plastic, Banana Peel

(C) Wood, Grass, Banana Peel

(D) Leather, Glass, Banana Peel

4205/(Set : A)

( 13 ) 4205/(Set : A)
19. ijkxufydk dk chtkaM dh vksj o`f) djuk mnkgj.k gS % 1

(A) xq#RokuqorZu dk

(B) jlk;ukuqorZu dk

(C) izdk'kkuqorZu dk

(D) tykuqorZu dk

The growth of pollen tube towards ovule is an

example of :

(A) Geotropism

(B) Chemotropism

(C) Phototropism

(D) Hydrotropism

20. vkstksu ijr lw;Z dh dkSu-lh fofdj.kksa ls i`Foh dh lrg dks
lqj{kk iznku djrh gS \ 1

Name the solar radiation from which the surface

of earth is shielded by ozone layer.

4205/(Set : A) P. T. O.

( 14 ) 4205/(Set : A)
21. vehck esa u, tho cuus dh izfØ;k dk D;k uke gS \ 1

What is the name of the process of formation of

new individual in Amoeba ?

22. ,Mªhusyhu gkWeksZu òkfor djus okyh xzfUFk dk D;k uke gS \ 1

What is the name of the gland secreting

adrenaline hormone ?

23. ekuo esa o`"k.k ds D;k dk;Z gSa \ 2

What is function of testis in man ?

24. ,dfyaxh ,oa f}fyaxh iq"i D;k gksrs gSa \ mnkgj.k nhft,A 2

What are unisexual and bisexual flowers ? Give

examples.

25. ekuo efLr"d esa esMqyk rFkk vuqefLr"d }kjk fd, tkus okys
dk;Z fyf[k,A 2

What is the function of medulla and cerebellum

in human brain ?

4205/(Set : A)

( 15 ) 4205/(Set : A)
26. xksy vkdkj ds cht ¼izHkkoh y{k.k½ dk >qjhZnkj cht ¼vizHkkoh
y{k.k½ ds lkFk ladj.k djok;k x;kA 4

Rounded seeds (dominant trait) were crossed
with wrinkled seeds (recessive trait).

(i) izFke larfr ds chtksa dk vkdkj D;k gksxk \
What type of seeds will be produced in F1
generation ?

(ii) f}rh; larfr esa Loijkx.k }kjk izkIr fdrus izfr'kr cht
xksykdkj gksaxs \
By self-pollination in F1 seeds, what
percentage of seeds will be rounded shape
in F2 generation ?

fp= lfgr O;k[;k dhft,A
Explain with diagram.

27. ekuo mRltZu ra= dk ukekafdr fp= cukdj] ew= cuus dh
izfØ;k dk o.kZu dhft,A 6

Draw a well labelled diagram of excretory system
and explain the process of urine formation in
human being.

4205/(Set : A) P. T. O.

( 16 ) 4205/(Set : A)
vFkok
OR

ikniksa esa mRltZu dk o.kZu dhft,A 6

Describe excretion in plants.

S

4205/(Set : A)