Question # 1

Electron ________________ energy when they jump from low to higher level.

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Absorb

Radiate

Nothing

Nil

The other name of modern periodic table is ________________ of periodic table.

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Long form

Simplified

Simplest

Nil

4^th and 5^th period of the long form of periodic table are called

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short periods

Normal periods

Long periods

Very long periods

In a discharge tube, the pressure of a gas is kept at

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10-2 atm

10-4 atm

10-6 atm

10-8 atm

The core of the earth is ____________ than crust.

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LIghter

Heavier

Both

Nil

The amount of energy given out when an electron is added to any atom is called:

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lattice energy

ionization energy

electronegative

electron affinity

Graphite is ___________

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Hard

Nil

Soft

Nil

____________ Metals are electronegative in nature.

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Pure-

Noble-

Non-

Nil

Metals are covered by using.

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Baeyer's test

Bohr's

Electrolysis

None

Modern periodic table can be classified into ________________.

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Elements

s, p, d, f blocks

Periods

ROWS

A binary solution consists of:

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One component

Two components

Three components

Many components

Increase in ________________ increase evaporation.

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Temperature

Stronger

All

None of above

The component of solution in larger amount is .

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Solute

Solvent

A & B

nIL

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