1. According to Science Research, Intake of lead may cause damage of
a) Brain
b) Lung
c) Liver
d) Kidney

2. Ozone depletion is caused by increase in the level of
a) Water Vapor
b) CFC
c) Oxygen
d) Carbon monoxide

3. Thermal power generation in India is carried out by burning
a) Coal
b) Oil
c) Wood
d) All of the above

4. pH of human blood is
a) 4
b) 7
c) 8
d) 10

5. Which of the following is not a green-house gas
a) CH5
b) CO2
c) SO2
d) CO

6. Among the following which of the wave carries most energy
a) UV Light
b) Infra-red Light
c) Microwaves
d) Milimeters Waves

7. According to Science community, DDT is considered harmful for ecological pint of view because
a) Bio-transformation
b) Bio-magnification
c) Bio-accumulation
d) Bio-degradation

8. Hyperplasia means
a) Apoptosis
b) increase in size of cells
c) increase in number of cells
d) All of the above

9. Minamata disease is caused by
a) Hg Vapor
b) Organic Hg
c) Dissolved As
d) None

10. Maximum Density of water is at
a) 4 °C
b) 2 °C
c) 100 °C
d) 272 °C