Question # 1

With increase in 10°C temperature, the rate of reaction double. This increase in rate of reaction is due to

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Decrease in activation energy of reaction

Decrease in the number of collisions between reactant molecules

Increases in activation energy of reactants

Increase in number of effect collisions

Splitting of spectral lines when atoms are subjected to strong electric field is called.

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Zeeman effect

Stark effect

Photoelectric effect

Compton effect

The cathodic reaction in the electrolysis of dil H2SO4, with pt electrode sis.

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Reduction

Oxidation

Both oxidation and reduction

Neither oxidation nor reduction

Repeated extraction using small portions of solvent are more.

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Accurate

efficient

Slow

Rapid

In electrolysis of aqueous NaCl, Cl-ions are.

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Oxidized at anode

Oxidized at cathode

Reduced at cathode

Neither oxidized nor reduced

Which of the following represents electronic configuration of the most electropositive elements

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He [ 2s^-1]

Xe [6s¹]

He [2s²]

Xe [6s²]

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

Which of the following is true for ionic compounds

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They are non-electrolytes in the molten state

They have bonds which are directional

They conduct electricity in solid state

They are generally more soluble in polar solvents than in non-polar solvents

In a period of periodic table, atomic radii

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Increases

Decreases

Remain same

First decreases than increases

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

The real gas obeying Van der Waal's equation will resemble ideal gas is.

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both 'a' and 'b' are large

both 'a' and 'b' and small

'a' is small and 'b' is large

'a' is large and 'b' is small

Which one of the following has the greater ionic characters in it.

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HF

HCl

H2O

H2

Colligative properties are used to determine the

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Freezing points

Boiling point

Atomic mass of an element

Molar mass of solute

The lightest value of lattice energy is for which one of these ionic compounds.

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NaI

NaF

NaBr

NaCl

Solvent extraction is an equilibrium process and it is controlled by.

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Law of mass action

The amount of solvent used

Distribution law

The amount of solute

In a solution 7.8 g of benzene and 46 g of toluene is present The mole fraction of benzene is.

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1/2

1/3

1/5

1/6

the volume occupied by 1.4 of N2 at S.T.P is

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2.24 dm3

22.4 dm3

1.12 dm3

112 cm3

Stronger the oxidizing agent greater is the

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Oxidation potential

Reduction potential

Redox potential

E.M.F of cell

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