Question : Why does one get cramps after sudden physical activity?

Option 1: The build-up of hydrochloric acid in our muscles during sudden activity causes cramps.

Option 2: The pepsin enzyme releases chemicals that lead to cramps.

Option 3: The oxygen molecules break down.

Option 4: The build up of lactic acid in our muscles during sudden activity causes cramps.

Question : Which one of the following chemicals is associated with muscle fatigue ?

Option 1: Uric acid
 

Option 2: Acetic acid

Option 3: Pyruvic acid

Option 4: Lactic acid

Question : Transboundary pollution ( or ) Acid rain is caused by:

Option 1: Carbon monoxide

Option 2: Carbon dioxide

Option 3: Hydrocarbon

Option 4: Nitrogen oxide and sulphur dioxide

Question : Chemobyl disaster is the result of pollution by

Option 1: Oil spill

Option 2: Acid rain

Option 3: Carbon dioxide

Option 4: Radioactive waste

Question : The major harmful gas emitted by automobile vehicle which causes air pollution is

Option 1: Carbon monoxide

Option 2: Methane

Option 3: Carbon dioxide

Option 4: Ozone gas