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Chemistry

Chemistry
Colour imparted to the Bunsen flame by strontium salt is

Brick red
Apple-green
Bluish green
Crimson red

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Chemistry
Which one of the following is not a cause for present global warming and climate change ?

Carbondioxide emission
Deforstation
Methane emission
CFC emission

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Chemistry
Tar roads get damaged if there is

Stagnation of water on road
Heavy traffic
No maintenance
No sloping

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Chemistry
Which one is the purest form of carbon

Graphite
Iron
Diamond
Coal

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Chemistry
Cement containing excess amount of lime

Cracks during setting
Becomes more strong
Is slow setting
Is quick setting

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Chemistry
Spirit in contact with body gives cool sensation because it is :

Highly volatile
Liquid
A good conductor
Transparent

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