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Chemistry

Chemistry
A detergent is a

Catalyst
Cleansing agent
Soap
Drug

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Chemistry
The most abundant element by number in the living system is :

Hydrogen
Nitrogen
Carbon
Oxygen

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Chemistry
Entropy of Universe is always

Decreasing
Constant
Zero
Increasing

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Chemistry
The oxidation number of nickel in K4[Ni(CN)4] is

8
4
–4
Zero

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Chemistry
The percentage of Nitrogen in Air is

85.02
78.03
0.94
0.03

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Chemistry
Periodic table contains how many groups

16
19
18
17

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MORE MCQ ON Chemistry

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