AP BIOLOGY

ANIMAL PHYSIOLOGY

GAS EXCHANGE IN DIFFERENT ANIMALS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
We should not touch the dry cobalt chloride paper with our bare hands because
A
it is corrosive
B
it is sticky
C
there maybe sweat on our hands
D
Mr. Yau told me not to do so
Explanation: 

Detailed explanation-1: -Touching electrical appliances with wet hands is dangerous because water is a good conductor of electricity and one might get an electric shock.

Detailed explanation-2: -We should not touch electrical appliances with wet hands because our body is a good conductor of electricity and since we may get electric shocks. A conductor allows electricity to pass through it and so our body is.

Detailed explanation-3: -Water is a good conductor of electricity. A person with wet hands touching electrical appliances get a shock.So it is dangerous to touch an electric appliance with wet hands.

Detailed explanation-4: -A switch should not be touched with wet hands. If water reaches the live wire, it forms a conducting layer between the hand and the live wire of the switch through which the current passes to the hand and the person may get a fatal shock.

There is 1 question to complete.