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

Question # 1

^{RNA consists of}

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Ribos

Pentose

Hexose

Trioses

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Question # 2

Which is used to manufacture of soap?

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NaOH

Ca(OH)₂

KOH

Mg(OH)₂

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Question # 3

In the preparation of insoluble salts, which one of the facts is incorrect?

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Two soluble salts are mixed

Two in soluble salts are mixed .

One of the salt produced is insoluble

Both of the salts produced are insoluble

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Question # 4

Night blindness is because of deficiency of:

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Vitamin A

Protein

Vitamin C

Vitamin D

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Question # 5

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.

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Question # 6

Guldberg and waage put forward law of mass action in:

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1860

1869

1870

1879

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Question # 7

Example of pest is

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Weeds

Herbs

Insect

All of them

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Question # 8

Amino acid are the building blocks of .

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Proteins

Carbohydrates

Vitamins

fats

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Question # 9

Which one of these pollutants are not found in car exhaust fumes?

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CO₂

O₃

NO₂

SO₂

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Question # 10

Dehydrohalogenation of vicinal-dihalides take place in the presence of.

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NaOH

KOH

NaCl

None of these

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Question # 11

Methyl butanoate smell like.

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Apple

Mange

Lemon

Grapes

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Question # 12

Concentration is process of:

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Mixting technique

Separating technique

Boiling technique

Cooling techique

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Question # 13

Acid used for cleaning metals , tanning and in printing industries, is:

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H2SO4

HNO3

CH3COOH

HCI

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