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21
Modern incandescent lamps have luminous efficiency is from . . . . . . . .
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Answer & Solution
Answer: Option D
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22
Provision of stone dust barrier has been given in which of the following circulars.
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Answer & Solution
Answer: Option D
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23
Illumination of a surface is measured in . . . . . . . .
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Answer: Option A
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24
Glare is reduced with the use of . . . . . . . .
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Answer & Solution
Answer: Option C
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25
The disease caused by inhalation of silica particles.
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Answer & Solution
Answer: Option B
Solution:
Option A: Silicons

This option is incorrect. "Silicons" does not refer to any disease caused by the inhalation of silica particles. It might be a confusion with "silicosis." However, "Silicons" itself is not a medical term related to respiratory diseases.

Option B: Sidorosis

This option is incorrect. "Sidorosis" is actually a typo or incorrect term. The correct term is "silicosis," which is the disease caused by the inhalation of silica particles. The correct spelling should be "silicosis."

Option C: Asbestosis

This option is incorrect. Asbestosis is a chronic lung disease caused by inhaling asbestos fibers. It is not related to silica particles.

Option D: None

This option is incorrect. There is a specific disease caused by the inhalation of silica particles, which is "silicosis," although it is not listed correctly in the provided options.

Conclusion:

The correct term for the disease caused by inhalation of silica particles is "silicosis." However, given the provided options, there appears to be a mistake. The intended correct answer should be "silicosis," making Option B: Sidorosis a typographical error for the correct answer.
26
The lead acid battery consists of . . . . . . . . cells.
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Answer & Solution
Answer: Option B
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27
Fluorescent tubes reduces . . . . . . . .
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Answer & Solution
Answer: Option A
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28
In self contained O2 breathing apparatus the weaver can take more O2 than gets through the circuit by the . . . . . . . .
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Answer: Option C
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29
The cooling agent in protosorb breathing apparatus is . . . . . . . .
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Answer & Solution
Answer: Option A
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30
The weight of fuel oil in GL-60 flame safety lamp.
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Answer & Solution
Answer: Option B
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