Goa Board Class 10 Question Paper 2025 General Science

2025 III 15 0930 Marks E M CM
Pg. 3 3
Time : 3 Hours GENERAL SCIENCE (E)

(CWSN)

Subject Code

S 2 0 3 5

Total No. of Questions : 70 (Printed Pages : 24) Maximum Marks : 70

INSTRUCTIONS : Read the following instructions carefully and strictly follow
them :

(i) There are 70 questions in the question paper. All
questions are compulsory.

(ii) Each question carries one mark.

(iii) There is no overall choice in the question paper.

(iv) In addition to this, separate instructions are given for
each question wherever necessary.

(v) All questions are compulsory.

(vi) The answers are to be entered in the space provided
on the question paper.

(vii) Figures to the right indicate full marks.

1. Rancidity is an .................. reaction. 1

• oxidation

• reduction

• decomposition

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2. Electrolysis of water is an example of ...................... . 1

• combination

• decomposition

• displacement

3. When hydrochloric acid reacts with a metal the gas formed is .............. . 1

• carbon dioxide

• chlorine

• hydrogen

4. ............................ loses it water molecules on heating and becomes Plaster of

Paris. 1

• Calcium

• Gypsum

• Magnesium

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Marks E M CM
Pg. 4 & 5 5

5. The reaction between an acid and a base is called ..................... . 1

• oxidation reaction

• decomposition reaction

• neutralization reaction

6. Why is baking soda a home remedy for treating pain due to excess acid in

the stomach ? 1

................................................................................................................................................

7. Baking soda reacts with the acid to give off ..................... gas which extinguishes

the fire ? Tick the correct answer. 1

• nitrogen

• carbon dioxide

• oxygen

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8. What precaution must be taken when diluting an acid ? 1

................................................................................................................................................

9. Name the acid present in curd. 1

10. The metal which is liquid at room temperature in the below picture

is .................. . 1

11. Metals are drawn into thin sheets. This property is called .................. . 1

• Ductility

• Malleability

• Sonorous

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Marks E M CM
Pg. 6 & 7 7

Look at the pictures given below and match the alloy used to make the given
objects.

Column A Column B Column C

12. (i) Bronze .................... 1

13. (ii) Brass .................... 1

(iii) Solder

14. Look at the picture and identify the non-metal. 1

15. Electrical wires are made of copper. Give reason. 1

................................................................................................................................................

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16. The enzyme secreted by the pancreas that digests protein is .................. . 1

• lipase

• pepsin

• trypsin

17. Absorption of water takes place in the ................... . 1

• small intestine

• large intestine

• stomach

Observe the picture of stomata and label the following :

18. Stomatal pore 1

19. Guard cell 1

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Marks E M CM
Pg. 8 & 9 9

Match the types of nutrition in Column A with the organism in Column B

and write in column C :

Column A Column B Column C

20. Parasite (i) Bread mould .................... 1

21. Saprophyte (ii) Orchid .................... 1

(iii) Hibiscus ....................

22. The instrument is sphygmomanometer it measures .................... . 1

23. Hypertension is dangerous. Give reason. 1

................................................................................................................................................

................................................................................................................................................

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24. Identify the below digestive gland. 1

25. What happens in the muscle cells when there is lack of oxygen ? 1

................................................................................................................................................

................................................................................................................................................

Look at the picture and answer the questions :

26. Name the balloon like structures present in the lungs. 1

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Marks E M CM
Pg. 10 & 11 11

27. What is the function of these balloons like structures ? 1

28. A person can accurately pass a thread through the eye of a needle. The part

of the brain involved in this action is .................... . 1

• The Cerebrum

• The Cerebellum

• The Medulla

29. The spinal cord is protected by the ..................... . 1

• skull

• ribs

• vertebral column

Observe the diagram and answer the questions.

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30. Identify the diagram ........................ . 1

31. Label dendrite 1

The picture shows a woman with a swelling in front of the neck.

32. What is this swelling in front of the neck called ? 1

33. Deficiency of a certain mineral causes this disease. Name the mineral. 1

34. Carbon dioxide does not need a carrier in the blood. Give reason. 1

................................................................................................................................................

................................................................................................................................................

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Marks E M CM
Pg. 12 & 13 13

35. The receptors present on our tongue are .................... receptor. 1

• gustatory

• olfactory

• photo

Look at the picture and label :

36. Pollen grain 1

37. Pollen tube 1

38. The ovules are present in the ..................... . 1

• stigma

• anther

• ovary

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39. The part of the male reproductive system which is blocked in surgical

contraception is ........................ . 1

• penis

• vas deferens

• urethra

40. Name any one disease transmitted by Sexual Contact. 1

41. Name any one contraceptive method. 1

Look at the picture and label the following parts :

42. Uterus 1

43. Ovary 1

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Marks E M CM
Pg. 14 & 15 15

44. State any one change that takes place in boys during puberty. 1

45. Name the male germ cells in human beings. 1

Look at the ray diagram given below :

46. Name the type of mirror. 1

47. Describe the image formed. 1

48. State one use of this mirror. 1

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A pencil is placed in a glass of water such that half the pencil is immersed

the water. The pencil appears to be bent.

49. Why does the pencil appear to be bent ? 1

50. Give another example of this phenomenon. 1

51. The part of the eye that controls the size of the pupil is .................. . 1

• iris

• ciliary body

• cornea

52. The image formed on the retina is ..................... . 1

• real and erect

• real and inverted

• virtual and erect

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Marks E M CM
Pg. 16 & 17 17

White light that is allowed to fall on a prism will split up into different

colours.

53. What is this band of colours called ? 1

54. What is this phenomenon of splitting up of white light into different colours

called ? 1

Observe the diagram and answer the questions :

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55. Name the defect seen in the eye. 1

56. The eyeball in this defect may be: (Tick the right one) 1

(i) too long

(ii) too short

Match the type of nutrition in Column A with the organism in Column B

and write in column C :

Column A Column B Column C

57. Live wire (a) green ................... 1

58. Earth wire (b) black ................... 1

(c) red

59. The instrument used to measure potential difference is .................. . 1

• ammeter

• resistor

• voltmeter

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Marks E M CM
Pg. 18 & 19 19

60. The commercial unit of electricity is ......................... . 1

• ampere

• watt

• kilo watt hour

Look at the picture and answer the question.

61. What is this called ? 1

62. What is it used for ? 1

................................................................................................................................................

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63. Pesticides enter the food chain through ................... . 1

• plants and aquatic life

• carnivores

• omnivores

64. Write one point of difference between Biotic and Abiotic factors of the

environment. 1

BIOTIC COMPONENT ABIOTIC COMPONENT

Observe this example of a food chain and answer the questions given

below.

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Pg. 20 & 21 21

65. Name the primary producer in the given food chain. 1

66. Name the secondary consumer in the above food chain. 1

67. Why should we not kill all the frogs. 1

................................................................................................................................................

68. Give one example of artificial ecosystems. 1

69. Why are human beings at the top of the food chain ? 1

................................................................................................................................................

................................................................................................................................................

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70. CFC production has been decreased at the level from 1986 because .............. . 1

• It causes global warming

• It depletes the ozone layer

• It causes acid rain

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