Question # 1

Ionic compounds are soluble in water due to:

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Hydrogen bonding

ion-dipole forces

Dipole-dipole forces

Dipole -induced dipole forces

Freezing point of water is:

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-4°C

0°C

-36°C

-58°C

Temporary hardness can be removed by__________.

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Quick lime

Slaked lime

Lime stone

HCl

Which process is responsible for ascending of water in plants from roots to leaf?

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Condensatin

Transpiration

Capillary action

Evaporation

Which salt cause permanent hardness in water is:

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Ca(HCO₃)₂

Mg(HCO₃)₂

CaCl₂

KCl

Water molecule show structure.

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Tetrahedral

Trigonal

Pentagonal

All of them

Temporary hardness is because of .

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Ca(HCO₃)₂

CaCO₃

MgCO₃

MgSO₄

Which process is responsible for ascending of water in roots:

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evaporation

transpiration

condensation

capillary action

Chemical formula of hypochlorous acid is.

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HCl

HOCl

H₂CO₃

HF

The % age of drinkable water on earth is

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2.0%

0.02%

0.2%

5.0%

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

The heat capacity of water is greater than rocks.

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4 times

5 times

6 times

7 times

Which hepatitis is caused by contaminated water?

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Hepatitis A

Hepatitis B

Hepatitis C

Hepatitis D

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