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Chemistry

Chemistry
The maximum number of isomers for an alkene with molecular formula C4H8 is

4
5
2
3

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Chemistry
One of the following is used to dissolve noble metals. That is

Aqua ragia
Nitric acid
Hydrochloric acid
Sulphuric acid

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Chemistry
Bleaching action of moist sulphur di-oxide is because of its

Acidic property
Basic property
Oxidising property
Reducing property

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Chemistry
Which one of the following nonmetals shows allotropy in the liquid state?

Bromine
Sulphur
Phosphorous
Carbon

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Chemistry
Mixture can be

Heterogeneous
Both A and B
Homogeneous
Pure substance

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Chemistry
The presence of ozone in the stratosphere is responsible for

Higher rate of photosynthesis
Supplying oxygen for people travelling in jets
Increasing the average global temperature in recent years
Checking the penetration of ultra-violet rays to the earth

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