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Chemistry

Chemistry
The drug ‘Marijuana’ is a

Mental stimulant
Sedative
Tranquillizer
Hallucinating substance

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Chemistry
Which one is the most dense liquid from the below

Water
Gasolin
None of these
Choloform

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Chemistry
Global warming is mainly due to accumulation of

Carbon dioxide
Oxides of sulphur
Oxides of nitrogen
Carbon monoxide

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Chemistry
The advantage of detergents over soaps is

Detergents are soluble in water
Detergents give lather even with hard water
Detergents could not give much lather
Soaps give lather with only soft water

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Chemistry
Which of the following has the highest lattice energy

RbF
NaF
KF
CsF

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Chemistry
The compound that has the least value for octane number is :

N-heptane
2-methyl heptane
2,2-dimethyl hexane
Iso-octane

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