Question # 1

The base which is used in alkaline batteries is.

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NaOH

Al(OH)₂

KOH

Mg(OH)₂

Dehydration of alcohols can be carried out with.

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NaOH

KOH

H₂SO₄

HCl

General formula of Alkyl radical is..

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C₆H_2n-2

C_nH_2n+2

C₁₁H_2n-1

C_nH_2n-2

Chalco-Pyrite is an ore of:

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Copper

Silver

Iron

Aluminium

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

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Roasting

Smelting

Bessemerization

All

Active mass is expressed as:

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{ }

[ ]

( )

l l

The substance formed during the chemical reaction are called.

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Products

Reactants

Radical

Element

Number of vitamins in vitamin B complex is.

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10

8

6

12

Which one of the following vitamins is water soluble?

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Vitamin A

Vitamin C

Vitamin D

Vitamin E

Which diseases cause by the deficiency of vitamin E?

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Rickets

Anemia in babies

Scurvy

Night blindness

Which is not a character of SO₂

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it is a colourless gas

It has irritating smell

It causes suffocation

It do not form sulphuric acid

Higher concentration of CO causes.

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Fatique

Headache

Both of them

None of them

Which disease is caused by polluted water.

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Cholera

Typhoid

Diarrhea

All of them

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