General Knowledge 18

1. The major constituent of Bio gas is
1. Methane
2. Butane
3. Ethane
4. None of these

2. Which of the following compounds is not used in dry cell?
1. Nh4cl
2. Zncl2
3. Mno2
4. Pbs

3. Which mirror is used as reflectors in car head lights, search lights?
1. Plane
2. Concave
3. Convex
4. None of these.

4. The speed of light in glass is ____ to than that in air
1. Less
2. Greater
3. Equal
4. None of these

5. Green plants of an ecosystem are called
1. Producers
2. Consumers
3. Decomposers
4. None of these.

6. A food chain starts with
1. Dewy
2. Photosynthesis
3. Respiration
4. Nitrogen fixation.

7. Rinderpest disease of poultry is caused by
1. Insects
2. Bacteria
3. Virus
4. Protozoa

8. The element which is required in largest quantity by plants is
1. Sulphur
2. Calcium
3. Phosphorus
4. Nitrogen

9. Of these the non conventional source of energy is
1. Petroleum
2. Coal
3. Wood
4. The sun

10. The most toxic metal pollutant of automobile exhausts is
1. Mercury
2. Cadmium
3. Copper
4. Lead

11. Which substance is used to impart yellow colour to glass
1. Cobalt oxide
2. Cadmium sulphide
3. Manganese dioxide
4. None of these

12. pellagra is caused due to deficiency of which Vitamin?
1. Thiamine
2. Calciferol
3. Niacin
4. Ascorbic acid

13. Which of the following is rich in Vitamin A
1. Carrot
2. Apple
3. Amla
4. Gren vegetables

14. The animal which uses sound as its eyes is
1. Dog
2. Cat
3. Cow
4. Bat

15. Guru Gobind Singh, the 10the Sikh Guru, was born at ---
1. Hyderabad
2. Patna
3. Anandpur sahib
4. Amritsar.