Question # 1

If the volumes of reactants and products are same in a gaseous phase reaction, then the equilibrium state is not affected by

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Change of temperature

Change of pressure

Change of concentration

Catalyst

In which , case particles are separated from each other.

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Fusion

Condensation

Neutralizations

Vaporization

Drying agent used in crystallization is.

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P2O3

Animal charcoal

KMnO4

Water

Fuel cells are the means by which chemical energy may be converted into

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Heat energy

Magnetic energy

Sound energy

Electric energy

De Broglie equation treats electron to be.

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A particle

Wave

Both particle and wave

None of these

What is bond order.

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Number of unpaired electrons

Number of paired electrons

Number of electrons present in antibonding molecular orbital

Number of bond formed between two atoms after overlap

How many moles of water results by burning 4 mole of H2 with excess of oxygen.

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1 mol

2 mol

3 mol

4 mol

Maximum number of electrons in f-subshell is.

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2

6

10

14

VSEPR theory was proposed by

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Nyholn and Gillespie

Kossel

Lewis

Sidwick

Half life period for 235 U is

92

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710 million years

810 milion years

720 million years

820 million years

If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of the gas will

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Remain unchanged

Increase four times

Reduce to 1/4

Be doubled

Which of the following compound has the highest % o f oxygen by weight

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CH₃- OH

C₂H₅OH

HCOOH

H₂O

Two solutions of NaCl and KCl are prepared separately by dissolving same amount of the solute in water. Which of the following statements is true for these solution.

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KCl solution will have higher boiling pint than NaCl solution

Both the solutions have different boiling point

KCl and NaCl solutions possess same vapour pressure

KCl solution possesses lower freezing point than NaCl solution

Which has zero potential energy.

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When H atom is independent

When two H atoms combine to form H2 molecule

When two H atoms super impose to each other

When two H atoms have weak attraction between them

What amount of NaOH is required to prepare 500 g of 0.5 molal solution.

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10 g

20 g

30 g

40 g

A molecular orbital can accommodate maximum electron

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2

6

8

10

Which of the following has bond angle of 120 ^o

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BeCl2

BF3

CH4

NH3

A component having small value of K mostly remains in the.

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Stationary phase

Mobile phase

Chromatographic tank

Solvent

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