Question # 1

The density of water is ................. at 4^oC

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1 gcm^-1

2 gcm^-1

3 gcm^-1

4 gcm^-1

Temporary hardness is because of .

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Ca(HCO₃)₂

CaCO₃

MgCO₃

MgSO₄

Water become hard because of:

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Ca+2

Mg+2

SO-24

all of these

Which one of the following diseases causes liver inflammation?

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Typhoid

Jaundice

Cholera

Hapatitis

Acute lead poisoning causes dysfunction of.

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Kidney

Liver

CNS

All of them

Sodium zeolite is resin of:

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NaAl(SiO₃)₂

KAl(SiO₃)₂

LiAl(SiO₃)₂

RbAl(SiO₃)₂

Density of water at 4°C is:

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0.976 gem-3

1 gem-3

0.956 gem-3

1.1 gem-3

The percentage of ocean in world water is.

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50%

67%

97%

25%

Which is not a heavy metal.

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Cadmium

Lead

Zinc

Murcury

Which of the following in insoluble in water.

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Benzene

NaCl

KCl

All of them

Industrial effluents are highly

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Toxic organic compounds.

Inorganic salts.

Heavy metals

All of them

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

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Jaundice

Dysentery

Cholera

Typhoid

Which disease cause when humans use water of industrial effluents.

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Cancer

Asthma

Jaundice

cholera

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