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Chemistry

Chemistry
Colour imparted to the Bunsen flame by strontium salt is

Bluish green
Apple-green
Brick red
Crimson red

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Chemistry
Nitrogen fixation is a process of

Conversion of molecular nitrogen to ammonia
Utilisation of nitrogen gas
Assimilation of nitrate
Conversion of organic nitrogen to proteins

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Chemistry
The highest volume of gases in lower atmosphere is comprised of

Nitrogen
Oxygen
Carbon dioxide
Hydrogen

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Chemistry
Phosphorus is kept in water because

Its critical temperature is high
Its critical temperature is low
Its ignition temperature is very low
Its ignition temperature is very high

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Chemistry
A matured mammalian cell without nucleus is

Erythrocyte
Spermatozoan
Lymphocyte
Oocyte

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Chemistry
Which is the purest commercial form of iron ?

Pig iron
Stainless steel
Wrought iron
Steel

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MORE MCQ ON Chemistry

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