EOM-2 paper 6

26,Which can be found by blotting paper soaked in lead acetate changes its color to black?,

SO2,

H2,

H2S,

CH4,

27,The permissible limit of the H2S is ?,

10 ppm,

50 ppm,

7 ppm,

5 ppm,

28,The permissible limit of the SO2 is ?,

10 ppm,

50 ppm,

7 ppm,

5 ppm,

29,When mixed with air H2 forms on explosive mixture the limits of explosibility is ?,

5 - 15,

4.3 - 45,

12 - 75,

4 - 75,

30,The permissible limit for the nitrous fumes is?,

10 ppm,

50 ppm,

7 ppm,

5 ppm,

Ans: 3, 3, 1, 4, 4