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UPSC General Science Sample Question Paper

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Objective type UPSC General Science Sample Question Paper with answers.

1. The nuclear fuel in the sun is
(a) Helium
(b) Uranium
(c) Hydrogen
(d) Oxygen
1. (c)

2. Cell activities are controlled by :
(a) Chloroplast
(b) Nitochondria
(c) Cytoplasm
(d) Nucleus
2. (d)

3. Which of the following helps eye to adjust the focal length of the eye lens :
(a) Cornea
(b) Conjunctiva
(c) Ciliary body
(d) Iris
3. (c)

4. The second’s hand of a watch is 2 cm long. The velocity of its tip is
(a) 0.21 cm/sec
(b) 2.1 cm/sec
(c) 21 cm/sec
(d) None of these
4. (a)

5. Laws of electrolysis are given by:
(a) Farady
(b) Maxwell
(c) Lenz
(d) Bohr
5. (a)

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6. Flemings left hand rule is used to fine out:
(a) Direction of magnetic field due to flow of current
(b) Direction of induced current due to effect of magnetic field
(c) Direction of motion of a current carrying conductor in magnetic field
(d) None of these
6. (c)

7. The alkaline hydrolysis of oils or fats gives soap and :
(a) Glycerol
(b) Ethenol
(c) Glycol
(d) Ethanoic acid
7. (a)

8. The sight of a delicious food usually makes month watery. It is a :
(a) Hormonal response
(b) Neural response
(c) Optic response
(d) Olfactory response
8. (d)

9. The structural and functional unit of kidneys are :
(a) Neurons
(b) Nephrons
(c) Medula
(d) None of these
9. (b)

10. Which of the following enzymes is generally nor present in adult human :
(a) Renin
(b) Pepsin
(c) Trypsin
(d) Amylopsin
10. (a)

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11. What is Hubble?
(a) Warship
(b) Star
(c) Telescope
(d) Missile
11. (c)

12. The iron produced in blast furnace is :
(a) Pig iron
(b) Wrought iron
(c) Stainless steel
(d) Steel
12. (a)
13. Formation is a 40% solution of :
(a) Methanol
(b) Methenal
(c) Methanoic acid
(d) None of these

13. (b)

14. Which acid is normally found in lemon and grape fruits?
(a) Citric acid
(b) Tartaric acid
(c) Ascorbic acid
(d) Lactic acid

14. (a)

15. Which force is required to increase the momentum of an object to 40 kg m/s in 5 seconds?
(a) 2N
(b) 4N
(c) 8N
(d) 10N
15. (c)

16. How will the image formed by a convex lens be affected if the central part of the lens is
covered by black paper?
(a) Remaining part of the lens will form no image
(b) The central position of the image is absent
(c) There will be no effect
(d) The full image will be formed with lessened brightness

16. (d)

17. The image formed on the retina of a human eye is
(a) Real and upright
(b) Real and inverted
(c) Imaginary and upright
(d) Imaginary and inverted
17. (b)

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18. Anti-knocking can be lessened by
(a) Iso Octane
(b) N Heptane
(c) TEL
(d) Benzene
18. (a)

19. In which of the following oxidation shows a positive oxidation state.
(a) CO
(b) N2O
(c) NO
(d) F2O

19. (d)

20. In increasing sequence, the major elements present in the human body are
(a) Calcium, iron, sodium, phosphorus
(b) Calcium, phosphorus, potassium, sulphur
(c) Calcium, iron, sodium, sulphur
(d) Calcium, potassium, phosphorus, iron
20. (a)

21. Atoms are electrically charged as
(a) Positive
(b) Negative
(c) Bi-positive
(d) Neutral
21. (d)

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22. The force between two parallel wires conducting current is used to define
(a) Ampere
(b) Coulomb
(c) Volt
(d) Newton
22. (a)

23. The hardest substance available on earth is
(a) Platinum
(b) Diamond
(c) Quartz
(d) Gold
23. (a)

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24. Washing soda is the common name for
(a) Calcium carbonate
(b) Calcium bicarbonate
(c) Sodium carbonate
(d) Sodium bicarbonate
24. (c)

25. The injection of anti-toxin is given to prevent
(a) Tetanus
(c) Typhoid
(d) Filariasis
25. (a)

26. Dental caries are due to
(a) Viral infection
(b) Contaminated water
(c) Bacterial infection
(d) Hereditary causes
26. (c)

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27. Spinach leaves are rich source of
(a) Vitamin A
(b) Iron
(c) Carotene
(d) Vitamin E
27. (b)

28. Which of these is not a mosquito borne disease?
(a) Dengue fever
(b) Malaria
(c) Filariasis
(d) Goitre
28. (d)

29. Oranges are rich source of
(a) Carbohydrates
(b) Fats
(c) Proteins
(d) Vitamins
29. (d)

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30. Which acid is produced when milk gets sour?
(a) Tartaric acid
(b) Butyric acid
(c) Lactic acid
(d) Acetic acid
30. (c)

31. Stem cuttings are commonly used for re-growing
(a) Cotton
(b) Banana
(c) Jute
(d) Sugar Cane
31. (d)

32. Persons with which blood group are called universal donors?
(a) AB
(b) A
(c) O
(d) B
32. (c)

33. Silk is produced by
(a) Egg of silkworm
(b) Pupa of silkworm
(c) Larva of silkworm
(d) Insect itself
33. (c)

34. Thermometer is related to degree in the same way as clock is related to
(a) Wall
(b) Tower
(c) Hour
(d) Cock
34. (c)

Question: Which of the following statements is correct?
(a) Whenever heat is supplied to a gas, its internal energy increases
(b) Internal energy of a gas must increase when its temperature is decreased
(c) Internal energy of a gas may be increased even if heat is not supplied to the gas
(d) Internal energy of a gas is proportional to square of the velocity of the vessel in which the gas is contained

Question: Which one of the following has the smallest heat of hydrogenation per mole?
(a) 1-butene
(b) trans-2-butene
(c) cis-2-butene
(d) 1,3-butadiene

Question: Two tuning forks X and Y are sounded together producing 10 beats per second, X is in resonance with 30 cm long air column closed at one end and Y is in resonance with 59 cm long air column open at both ends. Frequencies of forks X and Y are
(a) 500 Hz, 510 Hz
(b) 590 Hz, 600 Hz
(c) 256 Hz, 266 Hz
(d) 410 Hz, 400 Hz

Question: A mechanical wave propagates in a medium along the x-axis. The particles of the medium
(a) may move on the x-axis
(b) does not move
(c) must move on the y-axis
(d) must move on the x-axis

Question: The critical temperature of a substance is defined as
(a) the temperature above which the substance decomposes
(b) the temperature above which a substance can exist only as a gas
(c) melting point of the substance
(d) boiling point of the substance

Question: Absence of one cation and one anion in a crystal lattice is
(a) Ionic defect
(b) Frenkel defect
(c) Schottky defect
(d) Interstitial defect

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Question: Which of the following is correct order of reactivity of H atoms of alkanes?
(a) primary H > secondary H > tertiary H
(b) secondary H > primary H > tertiary H
(c) tertiary H > primary H > secondary H
(d) tertiary H > secondary H > primary H

Question: A monkey is climbing up a tree at a speed of 3 m/s. A dog runs towards the tree with a speed of 4 m/s. What is the magnitude of relative velocity of the dog as seen by the monkey?
(a) > 7 m/s
(b) Between 5 m/s and 7 m/s
(c) 5 m/s
(d) < 5 m/s

Question: Magnifying power of an Astronomical Telescope for distant objects is 8. If the objective and the eye lenses are at a separation 45 cm and the final image is formed at infinity, focal lengths of objective and the eye lenses are
(a) 40 cm, 5 cm
(b) 30 cm, 3.75 cm
(c) 36 cm, 4.5 cm
(d) 35 cm , 10 cm

Question: Which of the following parameters are the same for all hydrogen-like atoms and ions in their ground states?
(a) radius of the orbit
(b) speed of the electron
(c) energy of the atom
(d) orbital angular momentum of the electron

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