Materials Used in the Preparation of Substances like Soap, Glass, Ink, Paper, Cement, Paints, Safety Matches and Gun-Powder NDA Questions

NDA Chemistry

Materials Used in the Preparation of Substances like Soap, Glass, Ink, Paper, Cement, Paints, Safety Matches and Gun-Powder MCQ Questions


13.
Which of the following is an essential component for soap making?
A.
Caustic soda
B.
Sodium bicarbonate
C.
Sulfuric acid
D.
Potassium nitrate
😑 View Answer Rough Work Error
ANSWER :
A. Caustic soda
14.
The primary ingredient in the preparation of safety matches is__________
A.
Potassium chlorate
B.
Sulfur
C.
Lime
D.
Ammonium nitrate
😑 View Answer Rough Work Error
ANSWER :
A. Potassium chlorate
15.
Which chemical substance is used to make paints?
A.
Sodium carbonate
B.
Water
C.
Hydrogen peroxide
D.
Pigment
😑 View Answer Rough Work Error
ANSWER :
D. Pigment
16.
Which component is used in the preparation of cement?
A.
Magnesium sulfate
B.
Sodium chloride
C.
Iron oxide
D.
Calcium oxide
😑 View Answer Rough Work Error
ANSWER :
D. Calcium oxide
17.
Which element is present in the material used for making safety matches?
A.
Copper
B.
Magnesium
C.
Phosphorus
D.
Calcium
😑 View Answer Rough Work Error
ANSWER :
C. Phosphorus
18.
In the preparation of glass, what is mixed with silica to reduce its melting point?
A.
Magnesium sulfate
B.
Potassium nitrate
C.
Sodium carbonate
D.
Calcium carbonate
😑 View Answer Rough Work Error
ANSWER :
C. Sodium carbonate