Question # 1

The layer above troposphere extend upto 50 kilometers called.

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Mesosphere

Hydrosphere

Stratosphere

Thermosphere

Hydrogenation of alkenes and alkynes takes place at room temperature in the presence of.

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Ni

Pt

Pd

Both a and b

Crude oil is heated to the fractionating furnace upto.

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300 ^oC

350^oC

400^oC

450^oC

The region in which ozone layere depletes is called.

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Ozone hole

Black hole

Both of them

None of them

Traces of acetylene are present to coal gas about.

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0.06 %

0.08%

1.1 %

90%

Which salt is used for the manufacture of detergents, pulp and paper?

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NaCl

Na₂CO₃

Na₂SiO₃

NaCl

All acids turn blue litmus.

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Red

Blue

Pinck

White

Which one of the following is manufactured by Solvar's process:

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caustic soda

washing soda

urea

sulphuric acid

Chloroform is used for

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Anesthesia

Fever

Link

Toys

Which one of the not metal.

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Copper

Carbon

chromium

Iron

Which pollutant is responsible for changing weather?

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Air pollutant

Water pollutant

Soil pollutant

All of them

At dynamic equilibrium:

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The reactions stops to proceed

The amounts of reactants and products are equal

The speed of the forward is reverse reactions are equal

The reaction can no longer be reversed

At the height 880120 km from earth's surface is.

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Troposphere

Mesosphere

Stratosphere

Thermosphere

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