Question # 1

Which colour of HI is ?

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Orange

Purple

Red

Colourless

Compound of metal exist under earth crust are called.

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Ore

Gangue

Minral

None of these

When the magnitude of Kc is very small in indicates.

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Equilibrium will never establish

All reactants will converted to products.

Reaction will go to completion

The amount of products is negligible

Which one is Lewis Acid?

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BF₃

AICI₃

FeCl₃

All of these

Molecular formula of butyne is .

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C₄H₆

C₃H₄

C₄H₇

C₄H₈

Which disease cause when humans use water of industrial effuents.

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Cancer

Asthma

Jaundica

Cholera

Rapid growth of algae in water bodies is because of detergent having.

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Carbonate salts.

Sulphonic acid salts.

Sulphate salts.

Phosphate salts.

Ozone is formed in:

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Troposphere

Stratosphere

Mesosphere

Thermosphere

DNA was discovered by

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J .Watson

Funk

Robert brown

Hopkins

General formula of alcohols is:

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RCHO

ROH

O= R - C -OH

O = R - C- R

When a reaction ceases to proceed further , it is called.

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Chemical states

Static state

Physical state

Dynamic equilibrium state

When crude oil is heated in the fractionating tower:

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Vapour of higher boiling point fraction condense first in the lower part of the tower.

Vapours of lower boiling point fraction condense first in the lower part of tower.

Vapour of higher boiling point condense lather in the upper part of tower.

Vapours of higher boiling point never condense.

Permanent hardness is removed by adding.

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Na₂ zeolite.

Soda lime

Lime water

Quick lime

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