Question # 1

With the increase of atomic numebr , the number of electron in an atom also.

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Decreases

First increases then decreases

Increases

None of the above

The nucleus of an atom is composed of

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Electrons

Electons and protons

Protons and neutrons

Electrons and neutrons

Metals posses.

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Ionic bond

Covalent bond

Co-ordinate covalent

Metallic bond

How many atom of carbon are present in one molecule of glucose.

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11

22

12

6

How many elements are present in 1st period.

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1

2

8

18

Whcih law is obeyed in chemicla calculations?

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Law of mass action

Law of conservationof mass

Law of definite proportion

Both a and b

How many lone pairs are present on nitogenin ammonia molecule.

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One

Two

Three

Four

Which of the following is insoluble salt

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KCl

AgCl

NaCl

CaCl2

Industrialy, ammonia is produced by which process.

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Halogenation

Solvay process

Haber Process

Hydrogenation

Avogadrao was a scientist

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Italian

Greek

Garman

African

Transfer of electron between elements result in.

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Coordinate covalent bonding

Ionic bonding

Metallic bonding

Covallent bonding

²³⁸U₉₂ has number of neutrons.

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92

146

238

330

What will be the relative atomic mass of nitrogen given the abundance of its two isotopes, ¹⁴ N and ¹⁵N are 99.64 and 0.35

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14.0210

14.2100

14.0021

14.1200

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