General Science #5 MCQ

GENERAL SCIENCE #5 MCQ

1. What kind of image does a stereoscopic camera produces?

(a) Three dimensional

(b) Three dimensional in appearance

(c) Magnified

(d) Coloured

Answer: (b)

2. In a cyclic process

(a) the work done does not depend on heat

(b) the work done by the gas is equal to heat given to system

(c) internal energy of system increases

(d) the work done is zero

Answer: (b)

3. If half of the body of a lens is covered with black-paper the image produced by the lens will

(a) disappear

(b) have its size reduced to half

(c) have its intensity reduced to half

(d) None of the above

Answer: (c)

4. What is the SI unit of acceleration?

(a) metre/second

(b) Second

(c) Joule

(d) Kelvin

Answer: (a)

5. Focal length of the eye-lens which enables us to see the object at varying distances, is controlled and changed by which of the following?

(a) Choroid

(b) Ciliary muscles

(c) Vitreous humour

(d) Retina

Answer: (b)

6. A person standing in front of which type of mirror finds his image thinner but with normal height?

(a) Concave and spherical

(b) Convex and cylindrical with axis vertical

(c) Convex and cylindrical with axis horizontal

(d) Convex and spherical

Answer: (a)

7. By which of the following device, the image of an object formed is always virtual and small?

(a) Concave lens

(b) Convex lens

(c) Glass plate

(d) Concave mirror

Answer: (a)

8. What happens if the pressure of a gas is doubled at a fixed temperature?

(a) The volume will be doubled

(b) The volume would be increased four times

(c) The volume would be halved

(d) The volume will remain unchanged

Answer: (c)

9. Torr is the unit of which of the following?

(a) Viscosity

(b) Pressure

(c) Temperature

(d) Volume

Answer: (b)

10. Many salts absorb water from the atmosphere. This property is called which of the following?

(a) Dehydration

(b) Hydration

(c) Deliquescence

(d) None of the above

Answer: (c)

11. Air contains which of the following?

(a) Only oxygen gas

(b) Only carbon dioxide gas

(c) Only oxygen and nitrogen gas

(d) Oxygen, nitrogen, carbon dioxide, water vapours and few inert gases

Answer: (d)

12. One molecule means which of the following?

(a) 6.023 x 10^-23 atoms of the element

(b) 6.023 x 10²³ atoms of the element

(c) 1.6 x 10^-19 atoms of the element

(d) None of the above

Answer: (b)

13. Which of the following is a non-metal which exists in liquid state at room temperature?

(a) Iodine

(b) Mercury

(c) Chlorine

(d) Bromine

Answer: (d)

14. Plant cells are different to animal cells in not having which of the following?

(a) Cell wall

(b) Dicytosome

(c) Plastids

(d) Lysosome

Answer: (d)

15. The pitch of the voice at women is in general which of the following?

(a) Marginally lower than that of men

(b) The same as that of men

(c) Higher than that of men

(d) Much lower than that of men

Answer: (c)

16. Blood is formed in the human adult by which of the following?

(a) Spleen

(b) Yellow bone marrow

(c) Red bone marrow

(d) Heart

Answer: (c)

17. What are milk teeth?

(a) Teeth which do not grow at all

(b) Teeth which grow twice in life

(c) Teeth which are permanent

(d) Teeth which are temporary

Answer: (d)

18. Which of the following parts of the plant is used for the extraction of opium?

(a) Capsules

(b) Roots

(c) Flowers

(d) Leaves

Answer: (a)

19. Which muscle type is moved voluntarily?

(a) Smooth

(b) Skeletal

(c) Cardiac

(d) All of the above

Answer: (b)

20. Which one of the following is a modified stem?

(a) Sweet potato

(b) Carrot

(c) Coconut

(d) Potato

Answer: (d)