Question # 1

Chemical formula of hypochlorous acid is.

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HCl

HOCl

H₂CO₃

HF

Which disease cause liver inflammation?

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Typhoid

Jaundice

cholera

Hepatitis

Which one of the diseases causes severe diarrhea and can be fatal?

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Jaundice

Dysentery

Cholera

Typhoid

Water molecule had a structure;

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non-polar

polar

ionic

tetrahedral

Which one of the following gases is used to destroy harmful bacteria in water.

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Iodine

Chlorine

Fluorine

Bromine

Which gas is used to destroy harmful bacteria in water?

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Iodine

Chlorine

Flourine

Bromine

Cause of diarrhoea among following is:

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Diarrhea

Cholera

Cryptosporidium

Typhoid

Clark's method is used to remove the hardness of water, in this method which is used.

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Ca(HCO₃)₂

Na-Zeolite

Ca-Zeolite

Ca(OH)₂

The process of removing temporary hardness of water.

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Clark's method

Washing soda method

Sodium zeolite

Filteration method

Which of the following gas is used to destroy harmful bacteria in water.

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Iodine

Chlorine

fluorine

Bromine

Which one of the following diseases severe diarrhea and can be fatal?

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Joundice

Cholera

Dysentery

Typhoid

Salt makes the water permanently hard.

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CaSO₄

Ca(HCO₃)₂

NaHCO₃

NaCO₃

Swimming pools are cleaned by a process:

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Hydrogenation

Bromination

Chlorination

Nitration

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