Question # 1

The atomic number of sodium is ............... .

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9

10

11

12

The No. of atoms in 1 mole of carbiton is

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6.02 x 1021

6.02 x 1022

6.02 x 1023

6.02 x 1024

The third abundant as found in the earth' crust is:

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Carbon monoxide

Oxygen

Nitrogen

Argon

____________ Metals are electronegative in nature.

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Pure-

Noble-

Non-

Nil

Number of protons+ neutrons is :

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Atomic mass

Mass numbers

Both

Nil

Atoms as a whole is _________

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+

_

No

Neutral

_________ shells of noble gases is complete.

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Outer most

2

1

Nil

Which one of the following pair has the same mass?

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1 mole of CO and 1 mole of N₂

1 mole of CO and 1 mole of CO₂

1 mole of O₂ and 1 mole of N₂

1 mole of O₂ and 1 mole of CO₂

The fundamental unit of elements is ___________

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Molecule

Atom

Matter

Mixture

The number of proton in an atom is called _________ number.

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Molecule

Formula

Atomic

Molar

The empirical formula of glucose is

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CHO

CH2O

C2HO

CHO2

_____________ revolves in orbits around nucleus.

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Electron

Proton

Neutrons

Nil

One carbon is _________ times heavier than hydrogen.

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12

13

14

15

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