Which of the following is used for removing air bubbles from glass during its manufacture?
A). Arsenous oxide
B). Potassium carbonate
C). Soda ash
D). Feldspar
Detergents used for cleaning clothes and utensils contain?
A). Bicarbonates
B). Bismuthates
C). Sulphonates
D). Nitrates
Epoxy resins are used as:
A). Detergents
B). Insecticides
C). Adhesives
D). Moth repellents
Which of the following is commonly called a 'poly-amide'?
A). Terylene
B). Nylon
C). Rayon
D). Orlon
Which type of fire extinguisher is used for petroleum fire?
A). Powder type
B). Liquid type
C). Soda acid type
D). Foam type