MBOSE Class 10 Question Paper 2026 for Science

FOR MBOSE CLASS 10 EXAM PREPARATION

MBOSE Class 10 2026
Question Paper ·
Science
EXAM YEAR TYPE SUBJECT

MBOSE Class 10 2026 Question Paper Science

Notes · Sample Papers · Previous Year Papers · Mock Tests

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Total No. of Printed Pages—16
X/26/Sc
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s e SCIENCE
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g l a Full Marks : 80 ag
a 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. o m
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. assessment their
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(ii) For candidates without internal m
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marks will be multiplied byas1·25 to adjust their total to
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a maximum of 100 marks.
(iii) 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
Script. o m
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(v) Section—A contains Multiple Choice Questions
a Choose the most appropriate answer from the given
options. The answers to this Section must be provided in
the boxes provided in the Answer Script. Answers given
anywhere else will not be counted for marking.

/3 [ P.T.O.

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( 2 )

(vi) Section—B contains Very Short Answer-type Questions.

(vii) Section—C contains Short Answer-type Questions.

(viii) Section—D contains Long Answer-type Questions.

SECTION—A
Multiple Choice Questions (Answer all questions) : 1×30=30

1. Food cans are coated with tin and not with zinc because

(A) zinc is less reactive than tin

(B) zinc has a higher melting point than tin

(C) zinc is costlier than tin

(D) zinc is more reactive than tin

2. Which of the following statements about the given
reaction is not correct?

3 Fe(s)  4 H2O(g)  Fe3O4 (s)  4 H2 (g)

(A) Water is getting reduced.

(B) Water is acting as reducing agent.

(C) Iron metal is getting oxidised.

(D) Water is acting as oxidising agent.

X/26/Sc/3 [ Contd.

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( 3 )

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3. Which of the following gases can be used for storage of
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fresh sample of an oil for a long time?
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(A) Carbon dioxide or helium
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a(B) Helium or nitrogen
(C) Carbon dioxide or oxygen

(D) Nitrogen or oxygen

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4. —CHO represents the functional group

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(A) ester
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(B) carboxylic acid ag
(C) alcohol

(D) aldehyde

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(A) 6·4
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(C) 5·6

(D) 7·8

X/26/Sc/3 [ P.T.O.

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( 4 )

6. Which of the following is used to oxidise ethanol to
ethanoic acid?

(A) Conc. H2SO4

(B) Conc. HCl

(C) Acidified K2Cr2O7

(D) Alkaline KMnO4

7. A solution reacts with crushed eggshells to give a gas
that turns limewater milky. The solution contains

(A) KCl

(B) LiCl

(C) HCl

(D) NaCl

8. A metal A, which is used in the thermite process, when
heated with oxygen gives an oxide B which is amphoteric
in nature. A and B are identified as

(A) Al and Al2O3

(B) Mg and MgO

(C) Fe and FeO

(D) Fe and Fe2O3

X/26/Sc/3 [ Contd.

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( 5 )

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9. If a few drops of concentrated sulphuric acid accidentally
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spill over the hand of a student, what should be done?
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(A) Neutralise the acid with a strong alkali
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(B)
a apply a paste of sodium hydrogen carbonate
(C) Wash the hand with saline solution

(D) After washing with plenty of water, apply solution of
sodium hydroxide on the hand

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10. What is the colour change observed in iron nails when
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dipped in copper sulphate solution?
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(A) Green

(B) Blue

(C) Brown

(D) No colour change

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11. Characters transmitted from parents to offspring are
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present in
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s e (A) ribosomes
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a (B) Golgi bodies

(C) genes

(D) cytoplasm

X/26/Sc/3 [ P.T.O.

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( 6 )

12. The inner lining of the stomach is protected from HCl by
which one of the following?

(A) Bile

(B) Salivary amylase

(C) Pepsin

(D) Mucus

13. Which of the following groups contains a non-
biodegradable item?

(A) Grass, wood and plastic

(B) Cake, wood and grass

(C) Fruit peels, cake and lime juice

(D) Grass, flowers and leather

14. What prevents backflow of blood inside the heart during
contraction?

(A) Pericardium

(B) Thin walls of atria

(C) Valves in the heart

(D) Thick muscular walls of ventricles

X/26/Sc/3 [ Contd.

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( 7 )

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15. In a food chain, the third trophic level is always occupied
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by
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(A) carnivores
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(C) decomposers

(D) producers

16. Select the mismatched pair. m
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(A) Thyroxine : Thyroid gland
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(B) Adrenaline : Pituitary

(C) Estrogen : Ovary

(D) Testosterone : Testis

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17. Which of the following is a characteristic of vegetative
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(C) New plants grow from parts of the parent plant

(D) Formation of seeds

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( 8 )

18. Alveoli are found in
(A) kidney
(B) stomach
(C) heart
(D) lungs

19. Plants cannot think because they do not have
(A) nervous system
(B) circulatory system
(C) digestive system
(D) excretory system

20. Multiple fission is a mean of asexual reproduction in
which of the following?
(A) Hydra
(B) Paramecium
(C) Plasmodium

(D) Yeast

21. Which of the following mirrors is used by a dentist to
examine a small cavity in a patient’s tooth?
(A) Any spherical mirror
(B) Concave mirror
(C) Convex mirror
(D) Plane mirror

X/26/Sc/3 [ Contd.

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( 9 )

22. Which of the following devices works due to the magnetic m
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effect of electric current?
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(A) Electric
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(B)
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(C) LED bulb

(D) Electric heater

23. Where should an object be placed in front of a convex
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lens to get a real image of the size of the object?
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(A) At the principal focus of the .lens
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(B) At twice the focal length
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(C) At infinity

(D) Between the optical centre of the lens and its
principal focus

24. Two resistors of resistances 10  and 12  are connected
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in series to a 6 V battery. What is the total resistance of
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the circuit?
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(C) 60 

(D) 18 

X/26/Sc/3 [ P.T.O.

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( 10 )

25. The human eye can focus on objects at different
distances by adjusting the focal length of the eye lens.
This is due to

(A) persistence of vision

(B) accommodation

(C) farsightedness

(D) nearsightedness

26. A wire of length l, made of a material of resistivity
 (Rho), is cut into two equal parts. The resistivity of the
two parts is equal to

(A) 

(B)
2
(C) 2

(D) 4

27. Which of the following parts of the eye is responsible for
changing the shape of the lens to focus light onto the
retina?

(A) Iris

(B) Ciliary muscle

(C) Pupil

(D) Cornea

X/26/Sc/3 [ Contd.

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( 11 )

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28. In domestic electric circuits, the wiring with 15 A current
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rating is for the electric devices which have
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(A) metallic bodies and low power ratings l a
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(B)

(C) non-metallic bodies and low power ratings

(D) high power ratings such as geyser

29. The time difference between actual sunset and the
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(A) 4 minutes
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(B) 2 minutes ag
(C) 6 minutes

(D) 1 minute

30. You are given three media A, B and C of refractive
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(C) C

(D) Equal in all three media

X/26/Sc/3 [ P.T.O.

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( 12 )

SECTION—B

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

31. Why does the aqueous solution of an acid conduct
electricity? 2

32. Name the acids present in the following : ½×4=2
(a) Vinegar
(b) Orange
(c) Tomato
(d) Sour milk

33. What is the common name of the compound CaOCl2?
Give its two uses. 1+½+½=2

34. Why is 24 carat gold not used to make jewellery? What
do you mean by 22 carat gold? 1+1=2

35. What is biomagnification? 2

36. What could be the reasons for adopting contraceptive
methods? 1+1=2

37. What do you mean by dominant and recessive traits?
Give one example each. ½×4=2

38. What will happen if we kill all the organisms in one
trophic level? 1+1=2

X/26/Sc/3 [ Contd.

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( 13 )

39. How does the creation of variations in a species promote m
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survival? Write the full form of DNA. 1+1=2
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40. Why do m we. prefer a convex mirror as a rear view mirror s e
s e Give two reasons. l a
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in vehicles? 1+1=2

41. a
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g is the cause of dispersion of white light through a
What
prism? 2

42. Draw a schematic diagram of a circuit consisting of a
battery of three cells of 2 V each, a 5  resistor, an
8  resistor and a 12  resistor, and a plug key, all
connected in series. ½×4=2

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[For Visually Impaired Candidates only instead of Q. No. 42
given above]
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42. Why does the cord of an electric
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the heating element does? 2

43. A current through a horizontal power line flows in East
to West direction. What is the direction of magnetic
field at a point directly below it and at a point directly
above it? 1+1=2

SECTION—C
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Short Answer-type Questions (Answer any six) : 3×6=18
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the extraction of metals, electrolytic refiningas is

l as used to obtain pure metals.
a g
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for refining of copper in this process?
(b) Suggest a suitable electrolyte.
(c) What is anode mud? 1×3=3

X/26/Sc/3 [ P.T.O.

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( 14 )

45. The chlor-alkali process is used in many industries to
produce essential chemicals. What are the products
formed in this process? Mention how each product is
used in real-life applications. 1×3=3

46. What is insulin? What is its function? What happens
if insulin is not secreted in proper amount? 1×3=3

47. (a) What are the final products of carbohydrates,
proteins and fats after their digestion? 1½

(b) What is the function of gastric sphincter and anal
sphincter? ½+½=1

(c) Name the filtering unit of the kidneys. ½

48. Explain how plants excrete waste products through their
roots, stems and leaves. Provide examples. 1+1+1=3

49. Study the diagram below and answer the questions that
follow :

(a) Name the defect of vision shown in the diagram.

(b) List one cause of this defect.

(c) With the help of a diagram, show how this vision can
be corrected. 1×3=3

X/26/Sc/3 [ Contd.

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( 15 )

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[ For Visually Impaired Candidates only instead of Q. No. 49
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given on Page No. 14 ]
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49. Why is the colour of the clear sky blue? Name the colour
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which deviates the least and the most during dispersion
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of light. 2+1=3

50. An object, 4·0 cm in size, is placed at 25·0 cm in front of
a concave mirror of focal length 15·0 cm. At what
distance from the mirror should a screen be placed in
order to obtain a sharp image? Find the nature and the
size of the image. 3

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51. (a) State Ohm’s law. Give its mathematical expression.
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s em 1+½=1½
(b) Let the resistance of anlaelectrical component remain
a g difference across the two
constant while the potential
ends of the component decreases to half of its former
value. What change will occur in the current through
it? 1

(c) What is the SI unit of resistance? ½

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SECTION—D
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c. oLong Answer-type Questions (Answer any three) :
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4×3=12

s em 52. (a) What is a homologous series? Explain with
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a example. 1+1=2
(b) How can ethanol and ethanoic acid be differentiated
on the basis of their physical properties? ½+½=1
(c) How did glacial acetic acid get its name? 1

X/26/Sc/3 [ P.T.O.

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( 16 )

53. (a) In the given diagram, name the parts (1), (2), (3)
and (4) : ½×4=2

[ For Visually Impaired Candidates only instead of
Q. No. 53 (a) given above ]
53. (a) Name the four types of heterotrophic nutrition. ½×4=2
53. (b) Why is smoking injurious to health? 2

54. (a) Name two safety measures used in electric circuits
and appliances. 1
(b) Why does a compass needle get deflected when
brought near a bar magnet? 2
(c) Name a device that uses current-carrying conductor
and magnetic field. 1
55. What are the major parts of the brain? Which is the
largest part of the brain? Mention the function of
cerebellum. 1½+½+2=4
56. (a) Why are we not able to see the things clearly when
we move from dim light to bright sunlight outside? 2
(b) What is Tyndall effect? 1
(c) Define refractive index of the medium. 1
  

X/26/Sc/3 26K—53930

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