Question # 1

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

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Iodine

Chlorine

Fluorine

Bromine

The reduction of alkyl halides takes place in the presence of.

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Zn/HCl

Na/HCl

Mg/HCl

Cu/HCl

What gas is the major constituent of troposphere?

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Nitrogen

Oxygen

Hydrogen

Both a and b

In an irreversible reaction dynamic equilibrium:

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Never establishes

Established before the completion of reaction

Establishes after the completion of reaction

Establishes readily

Chalco-Pyrite is an ore of:

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Copper

Silver

Iron

Aluminium

Which is used to remove the grease stains from clothes?

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NaOH

KOH

Al(OH)₃

NH₄OH

Uric acid is found in

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Urine

Fats

Apple

Grapes

The word acid is derived from the.

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Greek word

Latin word

English word

Arabic word.

__________ acid cause acidity of stomach.

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Oxalic acid

Hydrochloric acid

Sulphuric acid

Nitric Acid

Guldberg and waage out forward law of mass action in:

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1889

1879

1869

1859

If an organic compound has 4 carbon atoms, all singly bonded, it will have the following characteristics except one.

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It will be saturated hydrocarbon

It will hav 8 hydrogen atoms

Its name will be n-butane.

It will be least reactive.

The freezing point of water is:

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10 ^oC

100^oC

0^oC

46^oC

Which diseases cause by the deficiency of vitamin E?

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Rickets

Anemia in babies

Scurvy

Night blindness

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

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