Question : Which among the following is a greenhouse gas?

I. Methane

II. Carbon dioxide 

III. Nitrogen dioxide

Option 1: I and II

Option 2: I and III

Option 3: II and III

Option 4: All the above

Question : Which among the following is used in fire extinguishers?

I. carbon dioxide

II. oxygen

III. sulphur dioxide

Option 1: Only I

Option 2: Only II

Option 3: Only III

Option 4: All options are correct.

Question : Which of the following is a communicable disease?

I. Malaria

II. Tuberculosis

III. Measles

Option 1: Only II

Option 2: Both I and III

Option 3: Both II and III

Option 4: Only III

Question : When Hydrogen starts burning in air ,it produces?

Option 1: Ammonia

Option 2: water

Option 3: Methane

Option 4: Carbon dioxide

Question : Which of the following gases is used in a bulb?

Option 1: Hydrogen

Option 2: Carbon dioxide

Option 3: Carbon monoxide

Option 4: Argon