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Chemistry

Chemistry
The inert gas used as beacon light is

Ar
He
Kr
Ne

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Chemistry
How many electrons can be accommodated in d-orbital

3
8
10
6

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Chemistry
The drug ‘Marijuana’ is a

Hallucinating substance
Tranquillizer
Sedative
Mental stimulant

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Chemistry
Entropy of Universe is always

Zero
Decreasing
Constant
Increasing

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

Zero
–4
4
8

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Chemistry
Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives

Hydrogen at cathode and oxygen at anode
Copper at cathode and oxygen at anode
Copper at cathode and anodes dissolve to give copper
Copper at anode and oxygen at cathode.

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