Question # 1

The relationship between K_pand K_cis given by

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Molal boiling point elevation depends upon

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Nature of solvent

Natrue of solute

Vapour pressure of solution

None of these

the number of moles of CO2 which contain 8.0 g of oxygen.

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0.25

0.50

1.0

1.50

The reaction that involves gases, its rate does not depend upon

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Catalyst

Temperature

Moles dm^-3

Partial pressure

Which of the following will have the same number of molecule at STP.

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280 cm3 CO2 and 280 cm3 of N2O

11.2 dm3 of O2 and 32 g of O2

44 g of CO2 and 11.2 dm3 of CO

28 g of N2 and 5.6 dm3 of oxygen

The oxidation number of C in C12H22O11 is

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Zero

- 6

+ 6

12

Rutherford's model fo atom failed because

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The atom did not have a nucleus and electrons.

It did not account for the attraction between protons and neutrons.

It did not account for the stability of the atom

Their is actually no space between the nucleus and the electrons.

Which one of the following orbital will be filled first.

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4f

5d

3d

4s

In which de excitation of electron of hydrogen atom maximum energy is relaeased.

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From n2 to n1

From n3 to n2

From na to n1

From na to n2

Which of the following molecule obey octet rule.

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BF3

BCl3

NH2

SF6

Fluorine molecule (F₂) is formed by the overlap of

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s - s orbital

s - p orbital

p - p head on overlapping of orbitals

p - p parallel overlapping of orbitals

The relative lowering of vapour pressure is equal to the mole fraction of the solute. This law is known as

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Ostwald dilution law

Raoult's law

Vant hoff's law

Henry's law

The unit of rate constant is same as that of rate of reaction in

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first order reaction

Second order reaction

Third order reaction

Zero order reaction

A gas is heated in such a way that its volume and absolute temperature both are doubled. the pressure of the gas

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Becomes 2 times

Becomes 4 times

Become half

Remain same

Which of the following can form H-bonds

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NH₃

C₂H₆

NaCI

CHCI₃

Which statements not correct about Galvanic cell.

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Anode in negatively charge

Reduction occur at anode

Cathode is positively charged

Reduction occur at cathode

Which of the following solution s has the highest boiling point.

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5.85% solution of sodium chloride

18.0 % solution of glucose

6.0% solution of urea

All have the same boiling point

Butter is solution of

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Liquid in liquid

Solid and liquid

Liquid and solid

Liquid and gas

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