Question # 1

Which one of the following species is not amphoteric?

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H₂O

NH₃

HCO₃

SO₄

Which one of the ore of copper?

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Copper glance

Chalcopyrite

Both a and b

None of these

Oxidation of alkenes produce.

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Glyoxal

Glycol

Oxalic acid

Formic acid

What is the percentage of carbon in anthracite?

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60%

70%

80%

90%

Sea water in unfit for drinking purpose die to the presence of.

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Salts

Algae

Fishes

All of them

|Which one is not an Arrhenius acid?

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HCl

H2SO₄

CO₂

HNO₃

Which acid is used for food preservation?

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Hydrochloric acid

Benzoic acid

Sulphuric acid

Nitric acid.

Uric acid is found in

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Urine

Fats

Apple

Grapes

The substance formed during the chemical reaction are called.

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Products

Reactants

Radical

Element

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

Which of following is not conjugate base.

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S^-2

F^-1

Na⁺

SO₄

Which of the followings is a disaccharide?

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Glucose

Fructose

Sucrose

Starch

Basic solution have pH value.

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Less than 7

Greater than 7

equal to 7

None of these

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