Question # 1

Incomplete combustion of alkanes produces.

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Carbon dioxide only

Carbon monoxide only

Carbon monoxide and carbon black

Carbon dioxide and carbon black

The colour of litmus in a strong basic solution become.

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Yellow

Blue

Red

Colourless

The density of water is ................. at 4^oC

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1 gcm^-1

2 gcm^-1

3 gcm^-1

4 gcm^-1

For reactions having large Kc value, the reaction proceeds to:

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Completion

Equilibrium state

back ward

None of these

Which is present 85% in natural gas?

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Ethane

Propane

Methane

Butane

Substitution reaction is the characteristics of.

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Alkanes

Alkenes

Alkynes

None of these

Hard water can cause.

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Stomach disorder

Boiler blasts

Inefficiency of engine

All of them

When bones are heated they give.

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Starch

Gelatin

Fats

Oils

Which one of the following properties of water is responsible for rising of water in plants?

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Specific heat capacity

Viscosity

Excellent solvent action

Capillary action

Higher concentration of CO causes.

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Fatique

Headache

Both of them

None of them

Sodium carbonate is manufactured by.

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Haber's process

Ostwald's process

Solvay's process

All

Building block of lipids are.

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Fatty acids

Carboxylic acids

Mineral acids

Alcohols

Which one is heterocyclic compound?

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Benzene

Cyclobutane

Thiophene

Nephthalene

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