Question # 1

How many percentage blister copper is pure?

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95%

75%

98%

100%

Oxidation of ethene with KMnO₄produces.

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oxalic acid

glyoxal

ethene glycol

Propene glycol

By which process alkenes are prepared from alcohols:

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Dehelogenation

Dehydrogenation

Dehydration

Dehydro-halogenation

Temporary hardness is removed by adding.

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Quick lime

Slaked lime

Lime stone

Lime water.

Which one is triglyceride.

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carbohydrates

Proteins

Lipids

Vitamins

Ammonical brine is prepared by dissolving ammonia gas in.

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NaCl

CaCO₃

CaCl₂

Na₂SO₄

Which gas in produced during ripening of bnabanas.

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Methane

Ethene

Acetylene

Carbon dioxide

Which of the following in insoluble in water.

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Benzene

NaCl

KCl

All of them

Which of one the following is Lewis base?

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BF3

H+

NH3

Ag+

The percentage of ocean in world water is.

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50%

67%

97%

25%

When the magnitude of Kc is very large in indicates.

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Reaction never go to completion

Reaction is in equilibrium state

Reaction will complete after some time

Reaction has almost to completion

Amino acid are the building blocks of .

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Proteins

Carbohydrates

Vitamins

fats

Temporary hardness is because of .

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Ca(HCO₃)₂

CaCO₃

MgCO₃

MgSO₄

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