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Chemistry

Chemistry
Entropy of Universe is always

Decreasing
Increasing
Constant
Zero

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Chemistry
Which one element has the lowest electronegativity value

Francium
Radium
Chlorine
Fluorine

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Chemistry
Indane gas is mixture of

Methane and oxygen
Butane and propane
Butane and hydrogen
Butane and oxygen

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Chemistry
________ gives hardness to stainless steel.

Lead
Tin
Zinc
Carbon

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Chemistry
The chemical name of 'laughing gas' is

Nitrous oxide
Nitric oxide
Nitrogen pentoxide
Nitrogen dioxide

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Chemistry
Threshold limit value of copper in the atmospheric air is

0.001 mg/m3
5.0 mg/m3
1.0 mg/m3
0.01 mg/m3

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MORE MCQ ON Chemistry

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