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Chemistry

Chemistry
The inherited traits of an organism are controlled by

nucleotides
enzymes
DNA molecules
RNA molecules

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

Highly volatile
A good conductor
Transparent
Liquid

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Chemistry
Citric acid is present in free form in

Apple
Milk
Tamarind
Lemon

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Chemistry
A metal is exposed to the atmosphere for sometime. It becomes coated with green carbonate. The metal must be

Silver
Aluminium
Copper
Zinc

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Chemistry
The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of

an oxidation reaction
an elimination reaction
an addition reaction
a condensation reaction

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Chemistry
In arc welding, Argon is used because of its

Ability to lower the melting point of the metal
High flammability
Low reactivity with metal
High calorific value

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MORE MCQ ON Chemistry

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