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 of the following is an air pollutant?

I Water vapour

II Carbon dioxide

III Hydrogen Gas

Option 1: Only I

Option 2: Only II

Option 3: Only III

Option 4: Both II and III

Question : Which among the following gases is also known as ‘Laughing Gas’?

Option 1: Sulphur dioxide

Option 2: Nitrogen oxide

Option 3: Carbon dioxide

Option 4: Carbon monoxide

Question : Which among the following is added to commercial nitric acid to make it coloured?

Option 1: Carbon dioxide

Option 2: Sulphur dioxide

Option 3: Coloured impurities

Option 4: Nitrogen dioxide

Question : Which of the following is/are CORRECT?

I. GUI - Graphical User Interface

II. VDU - Visual Display Unit

III. ALU - All Logical Unit

Option 1: I and II

Option 2: I and III

Option 3: Only III

Option 4: Only II