EOM 2 paper 3

11,Black damp is also called as?,

1.stink damp or stythe,

2.Marsh gas,

3.choke damp,

4.white damp,

12,For every 5% of black damp the light is diminished by ?

1.20 %,

2.30 %,

3.40 %,

4.50 %,

13,The light is extinguished when black damp % is?,

1.17 %,

2.17.5 %,

3.21 %,

4.20 %,

14,Co is aslo called as?,

1.Black damp,

2.Marsh gas,

3.Stink damp,

4.White damp,

15,CO forms an explosive mixture with air when present within the range of nearly(by vol)?

1.5 - 15,

2.4.5 - 45,

3.12 - 75,

4.4.5 - 75,

Ans

11. 3

12. 2

13. 1

14. 4

15. 3