CAPF (AC) 2021 (Paper-1) (Question 101-125)

21. Let an electric current of 1.5 A flow throug an incandescent lamp in a circuit. What is the amount of charge that flows through it in 10 ms?

(a) 0.015 C
(b) 0-15 C
(c) 1.5 C
(d) 15 C

Correct Answer: (a) 0.015 C

22. Which one among the following is not a renewable energy source?

(a) Solar
(b) Wind
(c) Nuclear
(d) Hydroelectric

Correct Answer: (c) Nuclear

Solution:Nuclear energy is usually considered another non-renewable energy source. ... The material most often used in nuclear power plants is the element uranium. Although uranium is found in rocks all over the world, nuclear power plants usually use a very rare type of uranium, U-235. Uranium is a non-renewable resource.

23. Which one of the following is not a function of chlorophyll?

(a) Splitting of water
(b) Absorption of photon
(c) Oxidation of carbohydrate
(d) Conversion of light energy into chemical energy

Correct Answer: (c) Oxidation of carbohydrate

Solution:Chlorophyll is mainly present in the thylakoids of the chloroplast. It helps to absorb light and transfer that light energy by resonance energy transfer to a specific chlorophyll pair in the reaction center of the photosystems. This sunlight absorbed helps in the process of photosynthesis.

Chlorophyll's job in a plant is to absorb light-usually sunlight. The energy absorbed from light is transferred to two kinds of energy-storing molecules. Through photosynthesis, the plant uses the stored energy to convert carbon dioxide (absorbed from the air) and water into glucose, a type of sugar. Plants use glucose together with nutrients taken from the soil to make new leaves and other plant parts. The process of photosynthesis produces oxygen, which is released-by the plant into the air.

24. Which one of the following statements about life processes in single-celled organisms is not correct?

(a) They require separate organ for food uptake.
(b) Separate organ is not needed for respiration.
(c) Waste of excretory material is produced by these organisms.
(b) They remain in contact with external environment.

Correct Answer: (a) They require separate organ for food uptake.

Solution:All life forms consisting of a single cell where all complicated processes including respiration, digestion, excretion and reproduction successfully occur are examples of unicellular organisms.

Most such organisms are microscopic, for apparent reasons. All bacteria, flagellates and other microorganisms are single-celled.

25. Which one of the following organisms does not processes notochord at any stage of its life cycle?

(a) Holothuria
(b) Herdmania
(c) Exocoetus
(d) Salamander

Correct Answer: (a) Holothuria

Solution:A notochord is a flexible and supportive structure found in certain chordate animals. It serves as a precursor to the spine and is present during the embryonic stage.

Holothuria move by the tube feet or podia. The mechanism of movement is the same as that in Echinus and Asterias. Holothuria does not possess notochord throughout its life stages.