1). Detergents used for cleaning clothes and utensils contain?
A). bicarbonates |
B). bismuthates |
C). sulphonates |
D). nitrates |
|
2). Epoxy resins are used as
A). detergents |
B). insecticides |
C). adhesives |
D). moth repellents |
|
3). Which of the following is commonly called a "polyamide"?
A). Terylene |
B). Nylon |
C). Rayon |
D). Orlon |
|
4). Which type of fire extinguisher is used for petroleum fire?
A). Powder type |
B). Liquid type |
C). Soda acid type |
D). Foam type |
|
5). Which is/are the important raw material(s) required in cement industry?
A). Gypsum and Clay |
B). Clay |
C). Limestone and Clay |
D). Limestone |
|
6). Deep blue colour is imparted to glass by the presence of
A). cupric oxide |
B). nickel oxide |
C). cobalt oxide |
D). iron oxide |
|
7). In vulcanisation, natural rubber is heated with
A). Carbon |
B). Silicon |
C). Sulphur |
D). Phosphorous |
|
8). How does common salt help in separating soap from the solution after saponification?
A). By decreasing density of Soap |
B). By decreasing solubility of Soap |
C). By increasing density of Soap |
D). By increasing solubility of Soap |
|
9). What are the soaps?
A). Salts of silicates |
B). Mixture of glycerol and alcohols |
C). Sodium or potassium salts of heavier fatty acids |
D). Esters of heavy fatty acids |
|
10). The major ingredient of leather is
A). collagen |
B). carbohydrate |
C). polymer |
D). nucleic acid |
|