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Q:

Which of the following is homogeneous mixture?

A) Smoke
B) Fog
C) Smog
D)Air

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Category : Chemistry ,

Q:

The branch of chemistry in which we study hydrocarbon and their derivatives is called

A) Organic chemistry
B) Inorganic chemistry
C) Industrial chemistry
D) Biochemistry

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Category : Chemistry ,

Q:

Ozone depletion causes

A) Blood Cancer
B) Skin Cancer
C) Malaria
D) T)B

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Category : Chemistry ,

Q:

In water, ratio of oxygen and hydrogen by mass is

A) 1:3
B) 2:1
C) 1:2
D) 8:1

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Category : Chemistry ,

Q:

The two types of nucleic acids are DNA and

A) GNA
B) RNA
C) proteins
D)lipids

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Category : Chemistry ,