Question # 1

Oxidation number of carbon in NaHCO₃

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+4

-6

+6

+2

Maximum number of electrons in f-subshell is.

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2

6

10

14

The gain of electron is known as.

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Oxidation

Reduction

Dehydration

Dehydrogenation

Kw for water at 0 oc is 0.1 x 10^-34 and at 100 ^oC 7.5 x 10^-14, How many times dissociation of water increase from 0 ^oCto 100 ^oC

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7.5 times

50 times

75 times

100 times

When an ionic compound is dissolved in water, it dissociate into positive and negative ions, which are surrounded byH2O molecule, This process is known as.

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Hydrolysis

Hydration

Saturation

solvolysis

The standard heat of formation is measured at 1 atmosphere and

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0 ^oC

100 ^oC

293 ^oC

25 ^oC

If the salt bridge is not used between two half cells, then the voltage.

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Decrease rapidly

Decrease slowly

Drops to zero

Does not change

Which is not decay product of free neutron

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Proton

Electron

Neutron

Antineutrino

Lyman series lie in

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Ultraviolet region

Visible region

Infrared region

Radio waves region

In stoichiometric calculations

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The reaction can be reversile

Side products can be formed

Law of conservation of mass may not be obeyed

Law of definite proportions is definitely obeyed

VSEPR theory was proposed by

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Nyholn and Gillespie

Kossel

Lewis

Sidwick

The number of bonds in oxygen molecules.

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One sigma and One pi

One sigma and two Pi

Three sigma only

Two sig and two pi

When concentration of one product is removed at equilibrium stage, in which direction it moves to reestablish equilibrium.

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Forward

Reverse

Neither forward nor reverse

Equally move in both direction

______ Molecule has zero dipole moment.

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CO

H2S

SO2

CH4

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 quantitative relationship between rate and concentration is given by.

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Law of mass action

Rate law

Both of these

Le Chatelier's principle

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

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First order reaction

Second order reaction

Zero order reaction

Third order reaction

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