Which one of the following is not a product of petroleum?

• CNG
  
  

• Paraffin wax
  
  

• Bitumen
  
  

• Kerosene

Which of the following is a greenhouse gas?

• Nitrogen
  
  

• Carbon dioxide
  
  

• Argon
  
  

• Oxygen

The percentage of nitrogen gas in the air is

• 78
  
  

• 21.5
  
  

• 40
  
  

• 3

Momentum of a particle of mass m is p. Its Kinetic Energy will be

• $p^{2}m$

• $\frac{p^2}{m}$

• $mp$

• $\frac{p^2}{2m}$

Which of the following is not a constituent of petroleum?

• Petrol
  
  

• Coke
  
  

• Paraffin wax
  
  

• Lubricating oil

The greenhouse effect which is causing an increase in the atmospheric temperature is mainly due to

• nitrogen

• sulphur

• carbon dioxide

• oxygen

The gas which forms carboxy-hemoglobin in the blood, causing suffocation is

• carbon monoxide

• nitrogen

• carbon dioxide

• chlorofluorocarbon

8.

The gases present in atmosphere that cause greenhouse effect are

• methane, water vapour, carbon dioxide

• carbon dioxide, oxygen, nitrogen

• carbon dioxide, sulphur dioxide, methane

• nitrous oxide, oxygen, water vapour

Maximum quantity of carbon is present in

• petrol

• kerosene

• lubricant oil

• ligroin

The steps required for the conversion of kitchen garbage into manure are given
below in a jumbled form.
A. Put the garbage in the pit.
B. Cover the bottom of the pit with sand.
C. Cover the pit loosely with grass or a gunny bag.
D. Add worms.
The correct sequence of these steps is

• B, A, C, D

• B, C, A, D

• B, A, D, C

• B, D, A, C