Question # 1

Which one of the following does ot contain protein

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Pulses

Potatoes

Beans

eggs

Phenolphthalein produces red colour in

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Acid

Base

Both a and b

None of these

Which one of the following vitamins is water soluble?

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Vitamin A

Vitamin C

Vitamin D

Vitamin E

Which one of the following is not air pollutant.

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CO₂

CO

NO₂

O₂

The source of galactose.

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Fruits

Vegetables

Cereals

All of them

Which gas saves the surface of earth from ultra violet radiation?

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CO₂

CO

N₂

O₃

When the rate of a the forward reaction takes place at the rate of reverse reaction the composition of the reaction mixture remains constant it is called.

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Chemical equilibrium

Dynamic equilibrium

Static equilibrium

All

Which process is responsible for ascending of water in roots:

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evaporation

transpiration

condensation

capillary action

Which of the following statement s is not true about fossil fuels?

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they all contain carbon

They are renewable

they produce pollutants when burnt

they cause acid rain

Margarine is produced by adding hydrogen to vegetable oil at.

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2000 ^oC

100^oC

200^oC

1000^oC

By the increase in the concentration of CO₂ in air.

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Decrease in heat energy

Increase in heat energy.

Heat energy remains same

None of them

Ionic compounds are soluble in water due to:

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Hydrogen bonding

ion-dipole forces

Dipole-dipole forces

Dipole -induced dipole forces

Water molecule had a structure;

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non-polar

polar

ionic

tetrahedral

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