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21
Spark plug is provided in a/an
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Answer: Option A
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22
Springs are not made of
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Answer: Option D
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23
Current asset of a factory includes the
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Answer: Option C
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24
In the blast furnace, incorporation of water vapour in the blast gives the following effect.
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Answer: Option A
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25
Maximum carbon content in cast iron is __________ percent.
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Answer: Option C
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26
For separating small pieces of metal from engine oil of a car, the best separating technique is the
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Answer: Option C
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27
Which of the following has the highest value of refractive index?
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Answer: Option B
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28
A machine having assumed life of 20 years is purchased for Rs 32000/-. Its scrap value at the end of its life is Rs 8000/-. If the depreciation is calculated by diminishing balance method, then percentage reduction in its value at the end of first year is __________ percent.
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Answer: Option A
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29
Brittleness induced due to the presence of sulphur in steel can be reduced by adding
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Answer: Option A
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30
Brittleness induced due to the presence of sulphur in steel can be reduced by adding
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Answer: Option A
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