Question # 1

Carbon forms ____________ bonds in diamonds.

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4

3

6

9

The elements of group 3 to 12 are called

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Normal elements

Transition elements

Radioactive elements

None of these

The base of modern periodic table is

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Atomic number (Z)

Mass number (A)

Avogadro's Number

Quantum Number

_________ can be separated by physical means.

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Mixture

Compound

Solution

Nil

Atoms form chemical bonds to attain the electronic configuration of

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Halogens

Noble gases

Alkali metals

Alkaline earthmetals

A solution whose molarity is known is called:

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Dilute solution

Concentrated solution

Saturated solution

Molar solution

Metals are ________________

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Liquid

Solid

Gas

Malleable

Long form of periodic Table is constructed the basis of:

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Mendeleev postulate

atomic number

atomic mass

mass number

The valency of nitrogen is

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1

2

3

4

The p subshell has:

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one orbital

two orbitals

three orbitals

four orbitals

Which one of the following non-metal is lustrous?

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Sulphur

Phosphorus

Iodine

Carbon

____________ is prevented by Metallic coating.

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NaCl

Rust

All

None of these

____________ of copper is done by electrolysis.

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Production

Refining

Both

Nil

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