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Chemistry

Chemistry
Nitrogen is an essential constituent of all :

Proteins
Fats
Vitamins
Carbohydrates

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Chemistry
Interveinal necrotic spots on leaves appear due to

O3injury
SO2injury
HF injury
NO2injury

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Chemistry
Ultra purification of a metal is done by :

Slugging
Smelting
Leaching
Zone melting

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Chemistry
Which of the following statements are correct about chloroform? a. Liquid fuel b. Anaesthetic in nature c. Produces phosgene d. Fire extinguisher

A, c
D, a
A, b
B, c

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Chemistry
Sulphur dioxide bleaches colouring matter by :

Oxidation
Decomposition
Reduction
Dehydration

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Chemistry
The number of electrons presents in H+ is

three
one
two
zero

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MORE MCQ ON Chemistry

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