Question # 1

Which pair of mixture is called ideal solution.

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Chlorobenzene and bromobenzene

Water alcohol

Water ether

HCl and water

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

The deviation of a gas from ideal behaviour is maximum at.

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-10 ^oC and 5.0 atm

-10 ^oC and 2.0 atm

100 ^oC and 2.0 atm

0 ^oC and 2.0 atm

How many sigma and pi bonds are present in C2H2.

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one sigma and two pi

two pi and one sigma

Two pi and three sigma

Three pi and two sigma

The heat contents of the system of known as.

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Entropy

Enthalpy

Work

Free energy

the rate of reaction when concentration of reactants are taken unity is called.

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Average rate

Instantaneous rate

Specific rate

Rate equation

In which compound oxidation state of chlorine is +5

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NaCl

HOCl

NaClO3

NaClO2

Gases deviate from ideal behaviour at high pressure. Which of the following is correct for non-ideal behaviour of gases

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At high pressure, the gas molecules move in one direction only

At high pressure, the collisions between the gas molecules are increased

At high pressure, the volume of the gas becomes insignificant

At high pressure, the intermolecular attraction becomes significant

According to classical concept, oxidation involves

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Addition of oxygen

Addition of electron

Removal of hydrogen

All are correct

Which process is endothermic and spontaneous

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Neutralization of NaOH with HCl

Formation of NH3 from H2 and N2

Formation of H2O from H2 and O2

Evaporation of sea water

The comparative rates at which the solutes move in paper chromatography depend on.

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The size of paper used

Rf values of solutes

Temperature of the experiment

Size of the chromatographic tank used

A material or a collection of materials which is under study is called

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State function

Degree and joule

Degree and ergs

Calorie and joule

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

If four moles of sulphur dioxide are oxidized to sulphur trioxide, how many moles of oxygen are needed.

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0.5

1.0

1.5

2.0

Which of the given has hydrogen bonding.

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CH4

CCl4

NH3

NaCl

10 g of NaOH has been dissolved per dm3 of solution. The molarity of solution is.

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0.5 M

0.25 M

1 M

2 M

Water and Phenol are partially miscible to each other at room temperature when both liquids are mixed together which is upper layer.

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Water in Phenol

Phenol and water

Pure phenol

Pure water

If we want to change O₂to O₂^-1The electron is to be placed in

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