Question # 1

In double covalent bond, every atom provides

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1 electrons

2 electrons

4 electrons

6 electrons

It is an ionic compound

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H2O

NaCI

CH4

HF

Gases produced in Nelson's cell are:

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H₂ and O₂

H₂ and CI₂

H₂ and N₂

CI₂ and O₂

Gases are the lightest form of mater and their densities are expressed in terms of:

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mg cm^-3

g cm^-3

g dm^-3

kg dm^-3

Concentration is ratio of:

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solvent to solute

solute to solution

solvent to solution

both a and b

Which one is the following belongs no Noble Gases?

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O

F

Ne

Nil

Addition of OXYGEN is called.

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Reduction

Conduction

Oxidation

Nil

Formation of water form hydrogen and oxygen is:

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Redox reaction

Acid-base reaction

Neutralization

Decomposition

Air is an example of:

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Gas in gas

Solid in gas

Liquid in gas

Gas in ;iquid

Pure alkali metals can be cut simply by knife but iron cannot because of alkali metals have:

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Strong metallic bonding.

Weak metallic bonding

Non- metallic bonding

Moderate metallic bonding

Sodium has ________________ no. of protons.

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11

12

13

14

1 atm = ?

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1 pascal

760 mm of Hg

1 atm

1 Nm^-2

All metals are solid except

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AI

Mg

Na

Hg

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