Question # 1

A solution of glucose is 10% The volume in which 1 g mole of it dissolved will be.

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1 dm3

1.8 dm3

900 cm3

200 cm3

When atoms are subjected to strong electric field, splitting of spectral lines is called.

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Zeeman effect

stark effect

Photoelectric effect

Compton effect

Relative lowering of vapour pressure is equl to.

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Mole fraction of solute

Mole fraction of solvent

Molarity

Molality

Which concentration unit is independent of temperature.

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Molarity

Molality

ppm

both a and b

Electrochemical series is the arrangement of the electrodes in

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Increasing order of reduction potentials

Decreasing order of reduction potentials

Increasing order of oxidation reduction potential

There is no fixed arrangement

The highest temperature above which a gas cannot be liquified, no matter how much the pressure is applied is known as

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Boiling temperature

Consulate temperature

Absolute zero

Critical temperature

Tin has isotopes.

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9

10

11

12

Which of the following can form H-bonds

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NH₃

C₂H₆

NaCI

CHCI₃

The over all positive value for the reaction potential predicts that process is energetically.

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Not feasible

Feasible

Impossible

No indication

Ice float over water because.

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Its structure is diamond like

Its density is maximum at 4 ^oC

It is less dense than water

It has no regular arrangement of molecules.

Which acid has less value of pKa.

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CH3COOH

H2S

H2CO3

HCl

Which of the following has coordinate covalent bond.

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NH4

NaCl

HCl

AlCl3

Which statement is incorrect about Dempster's mass spectrometer.

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Solid sample can be used in this mass spectrometer

Ions are detected on the basis of mass to charge ratio

Atoms or molecules are ionized with beam of electron.

This spectrometer work at one atmospheric pressure.

According to classical concept, oxidation involves

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Addition of oxygen

Addition of electron

Removal of hydrogen

All are correct

Electrolysis is used for

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Electroplating

Refining of copper

Manufacture of caustic soda

All of the above

Bohr's model of atom is contradicted by

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Planck quantum theory

Quartization of energy of electrons

Heisenberg's uncertainty principle

Quartization of angular members

The rate of reaction

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Increases

Decreases

Remains the same

May decrease of increase

Feeling uncomfortable breathing in un pressurized cabins is due to

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High pressure of CO2

Fatigue

Low pressure of O2

Low presssure of CO2

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