Question # 1

Formula of Methyl alcohol

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CH₅-OH

CH₃-CH₂-OH

All of them

None of these

Which one of the following vitamins is water soluble?

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Vitamin A

Vitamin C

Vitamin D

Vitamin E

Cause of Night blindness is.

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Deficiency of vitamin B

Deficiency of vitamin A

Deficiency of vitamin D

Deficiency of vitamin E

The strong heating of coal in the absence of air is called.

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Carbonization

Destructive distillation

Fractional distillation

All

Process of heating the concentrated ore to high temperature in excess of air is called.

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Roasting

Smelting

Bessemerization

All

The general formula of alkane is

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C_nH_2n+2

C_nH_2n-2

C_nH_2n

C_nH_2n+1

A disease is caused by excess of bile pigments in the blood is.

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Typhoid

Jaundice

Cholera

Dysentery

How many percentage of sunlight is absorbed by atmosphere gases.

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12%

18%

24%

30%

Mallic acid is present in

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Apple

Feats

String of bees

Urine

Natural source of citric acid is:

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Rancid butter

Fats

Lemon

Sour milk

Which one is the simplest sugar which can not be hydrolyzed?

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Glucose

Sucrose

Starch

Cellulose

Which gas is also known as life gas for plants.

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CO

CO₂

O₂

NO₂

The plant use

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Carbon di oxide

Oxygen

Nitrogen

Sulphur

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