General Knowledge - General Science
Exercise :: General Science - Synthetic Materials
| 16. |
Glass is made of the mixture of |
| A. |
quartz and mica | | B. |
sand and silicates | | C. |
salt and quartz | | D. |
sand and salt |
Answer: Option B
Explanation:
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| 17. |
The vast resources of unutilised natural gas can be used in the production of |
| A. |
graphite | | B. |
Synthetic petroleum | | C. |
fertilisers | | D. |
carbide |
Answer: Option C
Explanation:
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| 18. |
Paper is manufactured by |
| A. |
Wood and resin | | B. |
Wood, sodium and bleaching powder | | C. |
Wood, calcium, hydrogen sulphite and resin | | D. |
Wood and bleaching powder |
Answer: Option C
Explanation:
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| 19. |
Gypsum is added to cement clinker to |
| A. |
increase the tensile strength of cement | | B. |
decrease the rate of setting of cement | | C. |
facilitate the formation of colloidal gel | | D. |
bind the particles of calcium silicate |
Answer: Option B
Explanation:
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| 20. |
Soap is a mixture of sodium or potassium salts of |
| A. |
dicarboxylic acids | | B. |
monocarboxylic acids | | C. |
glycerol | | D. |
tricarboxylic acids |
Answer: Option B
Explanation:
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