Engineering :: Chemical Technology
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| 91. |
The principal constituent of Pyrex glass is |
Answer: Option C
Explanation:
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| 92. |
Sodium thiosulphate is used in photography to |
| A. |
remove unexposed silver halide |
B. |
reduce the silver halide to silver |
| C. |
intensify faint images |
D. |
remove metallic silver |
Answer: Option A
Explanation:
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| 93. |
Sodium thiosulphate is used in photography because of its |
| A. |
reducing behaviour |
B. |
oxidising behaviour |
| C. |
complex forming behaviour |
D. |
reaction with light |
Answer: Option C
Explanation:
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| 94. |
The gas which is filled in tungsten lamps is |
Answer: Option D
Explanation:
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| 95. |
The gas used in colour discharge tube is |
Answer: Option B
Explanation:
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| 96. |
The lightest gas which is non-inflammable is |
Answer: Option B
Explanation:
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| 97. |
The chemical name of bleaching powder is |
| A. |
calcium chloro hypochlorite |
B. |
calcium hypochlorite |
| C. |
calcium chlorate |
D. |
calcium perchlorate |
Answer: Option A
Explanation:
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| 98. |
Baleaching powder may be represented by the formula |
| A. |
Ca(CIO3)2 |
B. |
CaCI(OCI) |
| C. |
Ca(OCI)2 |
D. |
Ca(CIO4)2 |
Answer: Option B
Explanation:
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| 99. |
Bleaching properties of bleaching powder are due to its |
| A. |
oxidising properties |
B. |
reducing properties |
| C. |
basic properties |
D. |
disinfecting properties |
Answer: Option A
Explanation:
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| 100. |
Bleaching powder is manufactured by the action of CI2 on |
| A. |
quicklime |
B. |
slaked lime |
| C. |
milk of lime |
D. |
soda lime |
Answer: Option B
Explanation:
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