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UPSC CDS
IMPORTANT
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Which one of the following is used in soda-acid fire extinguishers ?
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Important Questions on UPSC CDS (I) Previous Year Paper 2021
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UPSC CDS
IMPORTANT
Which one of the following sodium compounds is used for softening hard water ?
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UPSC CDS
IMPORTANT
Calcium oxide reacts vigorously with water to produce slaked lime whose solution is used for white-washing walls. This slaked lime reacts with component (A) in air to form a thin layer of component (B) to give a shiny finish. What are the components (A) and (B) ?
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UPSC CDS
IMPORTANT
How many internal reflections of light take place in the formation of primary rainbow ?
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UPSC CDS
IMPORTANT
The direction of acceleration in uniform circular motion is along the _____.
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UPSC CDS
IMPORTANT
The weight of an object is due to _____.
MEDIUM
UPSC CDS
IMPORTANT
The size of particles being studied in `nanotechnology' is about _____.
