Question # 1

Which gas is used to destroy harmful bacteria in water?

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Iodine

Chlorine

Flourine

Bromine

Hook worm infects.

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Liver

Small intestine

Large intestine

Stomach

At which temperature o water shows mxamimum density.

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0 ^oC

100^oC

4^oC

-4^oC

Chemical formula of hypochlorous acid is.

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HCl

HOCl

H₂CO₃

HF

Which is not a heavy metal.

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Cadmium

Lead

Zinc

Murcury

The chemical used in Clark's method is:

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CaO

slaked lime(Ca(OH)s)

washing soda

sodium zeolite

Vibrious cholera bacteria causes the disease

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Cholera

Diarrhea

Jaundice

Hepatitis

Swimming pools are cleaned by the process.

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Chlorination

Hydrogenations

Saponification

None of them

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

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Condensatin

Transpiration

Capillary action

Evaporation

Chemical form of gypsum.

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MgSO₄. 5H₂O

CaSO₄. 2H₂O

FeSO₄. 5H₂O

CuSO₄. 5H₂O

Gypsum in water is.

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Sparingly soluble

Insoluble

Highly soluble

None of them

Some organic compound are soluble in water due to the presence of .

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-OH

H⁺

Botha a and b

Covalent bond

Swimming pools are cleaned by a process:

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Hydrogenation

Bromination

Chlorination

Nitration

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10th Class Chemistry Chapter 15 Water English Medium KPK Boards Online Mcqs MCQs With Answers

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