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Chemistry

Chemistry
0.01 mole of NaOH is added to 10 liters of water. The pH of water changes by

6
4
7
3

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Chemistry
Candle is a mixture of

Bees wax and paraffin wax
Higher fatty acids and stearic acid
Bees wax and stearic acid
Paraffin was and stearic acid

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Chemistry
The presence of Cobalt in Vitamin B12 was established for the first time by

Sodium Nitroprusside test
Spectroscopy
Hydrolysis test
Borax-Bead test

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Chemistry
Air shows the property of

None of these
Both A and B
N2
O2

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Chemistry
An element of atomic no. 29 belongs to

P-block
D-block
F-block
S-block

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Chemistry
The percentage of Nitrogen in Air is

0.94
78.03
0.03
85.02

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MORE MCQ ON Chemistry

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