Question # 1

Rutherford's model of 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

There is actually no space between the nucleus and the electrons

Which one of the following substances is used as water absorber in combustion analysis.

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Mg(CIO4)2

50% KOH

Lime water

Dilute solution of NaOH

The process in which liquid can be made to boil at low temperature in known as .........distillation

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Simple

Thermal

Steam

Vacuum

In the ground state of an atom, the electron is present

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In the nucleus

In the second shell

Nearest to the nucleus

Farthest from the nucleus

Most of the reaction which give stable products are

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Exothermic

Endothermic

Isothermal

None of these

The number of bonds in nitrogen molecules is.

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One pi and one sigma

One pi and two sigma

Thre sigma only

Two pi and one sigma

Diamond is a bad conductor because.

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It has tight structure.

It has a high density

There is no free electron present in the crystal of diamond to conduct electricity

None of the above

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

On which factor boiling point of a liquid depends.

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Amount of the liquid

Shape of the container of the liquid

Type of burner used for boiling

External pressure

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

Observed pressure is less than ideal pressure for any gas due to

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Intermolecular forces

Size of molecules

Boiling point of molecules

Both a and c

Haemoglobin is a Macro molecule and consists of approximately atoms.

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5000

10,000

68000

15000

In a group of periodic table, ionization energy.

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Decreases

Increases

Remains same

First increases than increases

The influence of temperature on reaction rate is predicated by

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Free energy change of reaction

Arrhenius equation

Van der weal's equation

Kinetic equation

Orbitals having same energy are called.

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Hybrid orbitals

Valance orbitals

Degenerate orbitals

d- orbitals

Forces of attraction between He atoms are.

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Hydrogen bonding

London forces

Debye forces

Ion dipole forces

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

Photosynthesis a photochemical reaction has order of reaction

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0

1

2

Fractional order

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