General Science #10 Multiple Choice Questions

GENERAL SCIENCE #10

MULTIPLE CHOICE QUESTIONS

1. At the temperature -273⁰C, the pressure of a gas at constant volume becomes zero. This temperature is called which of the following?

(a) Freezing point

(b) Critical temperature

(c) Absolute zero of temperature

(d) None of the above

Answer: (c)

2. Which one of the following phenomena occurs at absolute zero temperature?

(a) All substances become solids

(b) All gases become liquid

(c) Water freezes

(d) Molecular motion in a gas ceases

Answer: (d)

3. What is measured by the Altimeter?

(a) It measures quantity of heat

(b) It measures altitudes

(c) It measures strength of electric current

(d) It measures atmospheric pressure

Answer: (b)

4. Electric power is measured by which of the following?

(a) Dynamometer

(b) Hydrometer

(c) Dynamo

(d) Endoscope

Answer: (a)

5. What is a decibel?

(a) A music note

(b) The wavelength of noise

(c) A musical instrument

(d) A measure of sound level

Answer: (d)

6. What is measured by galvanometer?

(a) It measures the electric current of low magnitude

(b) It measures electricity

(c) It measures the specific gravity of liquids

(d) It measures sound under water

Answer: (a)

7. The output of a dynamo using a split ring commutator is which of the following?

(a) Fluctuating DC

(b) DC

(c) AC

(d) Half wave rectified voltage

Answer: (a)

8. Which of the following is not an element?

(a) Graphite

(b) Ozone

(c) Diamond

(d) Silica

Answer: (d)

9. Bleaching powder contains which of the following elements?

(a) O

(b) Ca and Cl

(c) Both ‘a’ and ‘b’

(d) Only Cl and O

Answer: (c)

10. Which one of the following has the largest number of atoms?

(a) 48 g of magnesium

(b) 127 g of iodine

(c) 71 g of chlorine

(d) 4 g of hydrogen

Answer: (d)

11. Which one does not belong to the following set of substances?

(a) Oxygen

(b) Chlorine

(c) Steam

(d) Hydrogen

Answer: (c)

12. Clouds have electric charge. This was shown by whom of the following?

(a) Coulomb

(b) Albert Einstein

(c) Faraday

(d) Benjamin Franklin

Answer: (d)

13. Which of the following is a whole number?

(a) Equivalent weight

(b) Atomic weight

(c) Atomic radii

(d) Atomic number

Answer: (d)

14. Avogadro stated that the total number of atoms in a molecule is known as its which of the following?

(a) Atom

(b) Molecularity

(c) Atomicity

(d) Element

Answer: (c)

15. Which should be supplied for immediate energy production in cells?

(a) Ammonia acid

(b) Vitamin C

(c) Fatty acid

(d) Glucose

Answer: (d)

16. Memory is the responsibility of which of the following?

(a) White matter

(b) Cerebellum

(c) Cerebrum

(d) Grey matter

Answer: (c)

17. The deficiency of Vitamin A causes which of the following?

(a) Dysentery

(b) Weakness

(c) Night blindness

(d) Hair fall

Answer: (c)

18. While cooking food, which of the following compounds are lost to the maximum?

(a) Vitamins

(b) Fats

(c) Carbohydrates

(d) Proteins

Answer: (a)

19. Which of the following organs does not secrete digestive juices?

(a) Oesophagus

(b) Stomach

(c) Small intestine

(d) Liver

Answer: (a)

20. Veins carry blood …………….

(a) towards the brain

(b) towards the heart

(c) away from the heart

(d) None of the above

Answer: (b)