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Chemistry

Chemistry
Silk fibre chemically is :

Protein
Carbohydrate
Fat
Cellulose

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Chemistry
Brass is a solution of molten copper in

Solid zinc
Molten zinc
Molten tin
Gaseous zinc

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Chemistry
What is the covalency of nitrogen in ammonia molecule

5
2
3
4

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Chemistry
The buffer action of blood is due to the presence of

CI– and [CO3]2–
HCI and NaCI
CI– and [HCO3]–
[HCO3]– and H2CO3

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Chemistry
The minimum energy required for an effective collision is

Threshold energy
Internal energy
Activation energy
Free energy

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Chemistry
Which is known as carbolic acid?

Oxalic acid
Ethanol
Phenol
Acetic acid

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MORE MCQ ON Chemistry

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