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Chemistry

Chemistry
The most abundant element in the human body is

Iron
Nitrogen
Oxygen
Carbon

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Chemistry
The hottest part of the gas flame is known as

non-luminous zone
blue zone
luminous zone
dark zone

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Chemistry
Sour taste of lemon is due to the presence of which of the following ?

Acetic acid
Oxalic acid
Citric acid
Formic acid

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Chemistry
The manufacture of iron from iron ore involves the process of

Electrolysis
Fractional distillation
Reduction
Oxidation

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Chemistry
Soap helps in better cleaning of clothes because

It reduces the surface tension of solution
Soap acts like catalyst
It absorbs the dirt
It gives strength to solution

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Chemistry
Which of the following vegetable oils does not contain essential fatty acids ?

Coconut oil
Sunflower oil
Mustard oil
Groundnut oil

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MORE MCQ ON Chemistry

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