MBOSE Class 10 Question Paper 2025 for Science and Technology

Meghalaya Board of School Education

QUESTION
PAPERS

Total No. of Printed Pages—15
X/25/S & T (NC)

2025

SCIENCE AND TECHNOLOGY

( New Course )

( FOR REGULAR CANDIDATES )

Full Marks : 80
Pass Marks : 24

Time : 3 hours

The figures in the margin indicate full marks for the questions

General Instructions :

(i) Please check that this Question Paper contains
56 questions.
(ii) 15 minutes time is given for the candidates to read the
Question Paper. The Question Paper will be distributed
15 minutes before the scheduled time of the
examination. In these 15 minutes, the candidates
should only read the instructions and questions
carefully and should not write answers on the Answer
Sheet.
(iii) The Question Paper contains 4 Sections, Sections A, B,
C and D.
(iv) Section—A contains Multiple Choice Questions (MCQ).
Choose the most appropriate answer from the given
options. The answers to this Section must be provided
in the boxes provided in the Answer Sheet. Answers
given anywhere else will not be counted for marking.

/5 [ P.T.O.

( 2 )

(v) Section—B contains Very Short Answer-type
Questions.
(vi) Section—C contains Short Answer-type Questions.
(vii) Section—D contains Long Answer-type Questions.

SECTION—A

Multiple Choice Questions. Attempt all questions : 1×30=30

1. Na 2SO4 + BaCl2  BaSO4 + 2NaCl

The above reaction is an example of a

(A) combination reaction

(B) double displacement reaction

(C) decomposition reaction

(D) displacement reaction

2. What happens when dilute hydrochloric acid is added to
iron filings?

(A) Hydrogen gas and iron chloride are produced

(B) Chlorine gas and iron chloride are produced

(C) No reaction takes place

(D) Iron salt and water are produced

X/25/S & T (NC)/5 [ Contd.

( 3 )

3. One of the constituents of baking powder is sodium
hydrogen carbonate. The other constituent is

(A) hydrochloric acid

(B) tartaric acid

(C) acetic acid

(D) sulphuric acid

4. A solution turns red litmus blue. Its pH is likely to be

(A) 1

(B) 4

(C) 5

(D) 10

5. Which of the following types of medication is needed in
treating indigestion?

(A) Antibiotic

(B) Antacid

(C) Analgesic

(D) Antiseptic

X/25/S & T (NC)/5 [ P.T.O.

( 4 )

6. Generally, non-metals are not lustrous. Which of the
following non-metals is lustrous?

(A) Sulphur

(B) Oxygen

(C) Nitrogen

(D) Iodine

7. Which among the following alloys contains mercury as
one of its constituents?

(A) Stainless steel

(B) Amalgam

(C) Alnico

(D) Solder

8. Butanone is a four-carbon compound with the functional
group

(A) carboxylic acid

(B) alcohol

(C) aldehyde

(D) ketone

X/25/S & T (NC)/5 [ Contd.

( 5 )

9. While cooking, if the bottom of the vessel is getting
blackened on the outside, it means that

(A) the food is not cooked completely

(B) the fuel is not burning completely

(C) the fuel is wet

(D) the fuel is burning completely

10. Which of the following metals can replace copper from a
solution of copper sulphate?

(A) Silver

(B) Gold

(C) Zinc

(D) Platinum

11. Saliva contains an enzyme called

(A) amylase

(B) lipase

(C) pepsin

(D) trypsin

X/25/S & T (NC)/5 [ P.T.O.

( 6 )

12. The breakdown of pyruvate to give carbon dioxide, water
and energy takes place in

(A) nucleus

(B) cytoplasm

(C) mitochondria

(D) chloroplast

13. In a synapse, chemical signal is transmitted from

(A) dendrite to cell body of the same neuron

(B) axon to cell body of the same neuron

(C) axonal end of one neuron to dendrite end of another
neuron

(D) cell body to axon of the same neuron

14. Which of the following is a plant hormone?

(A) Insulin

(B) Thyroxin

(C) Oestrogen

(D) Cytokinin

X/25/S & T (NC)/5 [ Contd.

( 7 )

15. Asexual reproduction through budding takes place in

(A) amoeba

(B) yeast

(C) plasmodium

(D) leishmania

16. Which of the following diseases is not sexually
transmitted?

(A) Syphilis

(B) Gonorrhoea

(C) Warts

(D) Hepatitis

17. A trait in an organism is influenced by

(A) paternal DNA only

(B) maternal DNA only

(C) both maternal and paternal DNA

(D) neither maternal nor paternal DNA

X/25/S & T (NC)/5 [ P.T.O.

( 8 )

18. Which of the following is an acquired character?

(A) Skin colour

(B) Colour of eyes

(C) Attached or free ear lobes

(D) Size of the body

19. Which one of the following is an artificial ecosystem?

(A) Pond

(B) Crop field

(C) Forest

(D) Lake

20. Depletion of ozone is mainly due to

(A) carbon dioxide

(B) carbon monoxide

(C) chlorofluorocarbons

(D) methane

X/25/S & T (NC)/5 [ Contd.

( 9 )

21. The refractive index of water is

(A) 1·0003

(B) 1·52

(C) 1·33

(D) 2·42

22. A full-length image of a distant tall building can
definitely be seen by using

(A) a concave mirror

(B) a convex mirror

(C) a plane mirror

(D) both concave as well as plane mirror

23. In torches, searchlights and headlights of vehicles, the
bulb is placed

(A) between the pole and the focus of the reflector

(B) very near to the focus of the reflector

(C) between the focus and the centre of curvature of
the reflector

(D) at the centre of curvature of the reflector

X/25/S & T (NC)/5 [ P.T.O.

( 10 )

24. In the human eye, the part which allows light to enter
into the eye is

(A) retina

(B) pupil

(C) eye lens

(D) cornea

25. The band of colours obtained by splitting of white light
is called

(A) dispersion

(B) spectrum

(C) refraction

(D) deviation

26. Myopia occurs due to

(A) increase in focal length of the eye lens

(B) decrease in focal length of the eye lens

(C) contraction of the eyeball

(D) decrease in distance between retina and the eye lens

X/25/S & T (NC)/5 [ Contd.

( 11 )

27. Kilowatt-hour is the unit of

(A) electrical power

(B) conductivity

(C) resistivity

(D) electrical energy

28. An electric bulb connected to 220 V generator carries a
current of 0·5 A. The power of the bulb is

(A) 440 W

(B) 110 W

(C) 1100 W

(D) 44 W

29. The most important safety method used for protecting
home appliances from short circuiting or overloading is

(A) earthing

(B) use of fuse

(C) use of stabilizers

(D) use of electric meter

X/25/S & T (NC)/5 [ P.T.O.

( 12 )

30. Force on a current-carrying conductor in a magnetic field
depends on

(A) direction of mechanical field lines

(B) direction of the magnetic field and current

(C) area of cross-section of the wire

(D) length of the wire

SECTION—B

Very Short Answer-type Questions. Answer any ten : 2×10=20

31. Calcium oxide reacts with water. Justify your answer by
giving balanced chemical equation for the chemical
reaction. 2

32. What is neutralization reaction? Give one example. 1+1=2

33. Give two uses of Plaster of Paris. 2

34. Explain the meaning of malleability and ductility. 1+1=2

35. What is regeneration? Give one example. 1+1=2

36. Define heredity. Who is known as the father of genetics?
1+1=2

37. How does the embryo get nourishment and generate
waste substance? 2

X/25/S & T (NC)/5 [ Contd.

( 13 )

38. Give any two ways in which non-biodegradable
substances affect the environment. 2

39. What changes can you make in your habits to become
more environment-friendly? ½×4=2

40. The radius of curvature of a spherical mirror is 20 cm.
What is its focal length? 2

41. Why do the planets not twinkle? 2

42. A current of 0·5 A is drawn by a filament of an electric
bulb for 10 minutes. Find the amount of electric
charge that flows through the circuit. 2

43. What is heating effect of current? Name two electrical
appliances which work on this effect. 1+1=2

SECTION—C

Short Answer-type Questions. Answer any six : 3×6=18

44. What is redox reaction? With an example, show which
reactant gets oxidized and which gets reduced. 1+1+1=3

45. Give three differences between calcination and roasting. 3

46. Name the organ that produces bile. Give two functions
of bile. 1+2=3

X/25/S & T (NC)/5 [ P.T.O.

( 14 )

47. Give three events that occur during the process of
photosynthesis. 3

48. Name any three plant hormones and give their
functions. 3

49. What is refraction of light? State the laws of refraction
of light. 1+2=3

50. (a) List two properties of magnetic field lines.
(b) Why two magnetic field lines cannot intersect each
other? 2+1=3

51. What is overloading? When can it occur? 1+2=3

SECTION—D

Long Answer-type Questions. Answer any three : 4×3=12

52. A dry pellet of a common base B, when kept in open,
absorbs moisture and turns sticky. The compound is
also a by-product by chlor-alkali process. Identify B.
What type of reaction occurs when B is treated with an
acidic oxide? Write the balanced chemical equation for
one such solution. 4

53. (a) Give two differences between aerobic and anaerobic
respiration.
(b) How are water and minerals transported in plants?
(c) What is excretion? 2+1+1=4

X/25/S & T (NC)/5 [ Contd.

( 15 )

54. Draw the diagram of a flower and label it. Write the
names of gamete producing organs in the flower.
(1+2)+(½+½)=4

[ For Visually Impaired Candidates only
in lieu of Question No. 54 ]

54. Write four points of difference between asexual and
sexual reproduction. 4

55. (a) Define electric power.

(b) An electric oven is designed to work on the mains
voltage of 220 V. This oven consumes 11 units of
electrical energy in 5 hours. Calculate the—
(i) power rating of the oven;
(ii) current drawn;
(iii) resistance of the oven when it is red hot. 1+3=4

56. (a) What is meant by power of accommodation?

(b) What is the far point and near point of the human
eye with normal vision?

(c) A student has difficulty in reading the blackboard
while sitting in the last row. What could be the
defect, the student is suffering from? How can it be
corrected? 1+1+2=4

  

X/25/S & T (NC)/5 K25—50530

AglaSem Earn While You Learn Program!

Share your recent question papers with us and get paid!
अपने हाल के न प हम भेज और कमाएँ!

To participate, email us with the following details:
भाग लेने के लए हम न न ववरण के साथ ईमेल कर:

- Your Name
- Your Class
- Your Board
- Details of the Question Papers you have
आपके पास उपल ध न प का ववरण

Our team will reach out to you with the next steps.
हमार ट म आगे क या के लए आपसे संपक करे गी।

Email: support@

Study Materials
Notes

Model Papers Class 6 Notes

Sample Papers Class 7 Notes
Half Yearly Sample Papers Class 8 Notes

Class 9 Notes
Important Resources
Class 10 Notes
Periodic Table
Class 11 Notes
Writing Skills / Formats

Maps of India / World Class 12 Notes

Books and Solutions

NCERT Books
NCERT Book Solutions
HC Verma Chapter Wise Solutions
RD Sharma Solutions
CGBSE Solutions