RRB GROUP D Chemistry Quiz - 50

Attempt now to get your rank among 3 students!

Question 1:

Which is used to produce smoke screens?

Calcium phosphide

Zinc sulphate

Sodium carbonate

Zinc phosphide

Which of the following is used for removing air bubbles from glass during its manufacture?

Arsenous oxide

Potassium carbonate

Soda ash

Feldspar

Zeolites have-

Honeycomb like structure

Octahedral structure

Tetrahedral structure

All of the above

Which of the following gas mixture is used for welding gas?

Acetylene and Hydrogen

Hydrogen and Oxygen

Hydrogen and Helium

Oxygen and Acetylene

The poisonous gases which contain chlorine are

1, 2

1, 2, 4

3, 4

2, 3, 4