Question # 1

______ Molecule has zero dipole moment.

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CO

H2S

SO2

CH4

"The components of which mixture can be separated by filtration".

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NaCl and CaCl2

Calcium carbonate and NaCl

Blue and green inks

Sand and naphthalene

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 value of Rydberg constant is.

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1.6 x 10⁷ m-1

1.9768 x 10⁷ m-1

1.09678 x 10⁷ m-1

1.7904 x 10⁷ m-1

A solution will be unsaturated if

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Ionic product = Kap

Ionic product < Ksp

Ionic Product > Ksp

both 'a' and 'b' are correct

In the ground state of an atom, the electrons is present.

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In the nucleus

In the second shell

Nearest to the nucleus

Farthest form the nucleus

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

Noon has low critical temperature and pressure as compared to other gases. the most probable reason is that

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Its octet is complete

It is a monoatomic gas

It has very low polarizability

It has least forces of attraction

When 5d orbital is completed them entering electron goes into.

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6s

6p

6d

6f

The relative lowering of vapour pressure is equal to the mole fraction of the solute. This law is known as

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Ostwald dilution law

Raoult's law

Vant hoff's law

Henry's law

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

According to MOT, which molecular orbital has highest energy.

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sigma 1s

pi+ 2S

pi 2py

Pi+ 2px

The born Haber cycle is the best application of law.

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Boyle's

Dalton's

Hess's

Graham's

The pH of human blood is

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7.0

7.4

4.0

6.5

Under which conditions of temperature and pressure will a real gas behave most like an ideal gas.

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Low temperature and how pressure

High temperature and high pressure

Low temperature and high pressure

High temperature and low pressure

An aqueous solution of ethanol in water has vapour pressure

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Equal to that water

Equal to that of ethanol

More than that of H₂O

less than that of water

Cell potential depends upon

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Temperature

Concentration of ions

Nature of electrolyte

All of above

The shape of diamond crystal is.

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cubic

Hexagonal

Tetragonal

Orthorhombic

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