Question

Q.3. Multiple choice questions: [4]

a) Choose the device that does not necessarily require electricity to

work.

i. Refrigerator

ii. Bicycle

iii. Microwave

iv. Air conditioner

b) It is a large dome-shaped muscular sheet that contracts and

relaxes alternately. On contraction, it flattens and increases space

inside the chest cavity.

i. Ribs

ii. Thoracic cavity
iii. Diaphragm

iv. Sternum

c) The conical shaped piece of aluminium that surrounds the bulb in

the torchlight and directs forward the surrounding light emitted by

the bulb is known as the ____________________.

i. Cell

ii. Switch

iii. Glass

iv. Reflector

d) Statement A- Breathing is a chemical process that involves the

release of energy.

Statement A- Breathing provides oxygen to the body cells for

respiration.

i. Both statements ‘A’ and ‘B’ are True

ii. Both statements ‘A’ and ‘B’ are False

iii. Only statement A is true
iiii. Only statement B is true​

Answer 1

Answer:

a-II

a-IIB-III

a-IIB-IIIC-Iv

a-IIB-IIIC-IvD-III

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