Question # 1

Reaction in which molecules absorbing light do not themselves react but induce other moleculaes to react are called.

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Chain reactions

Photosenaitized reactions

Reversible reactions

Free radical reactions

A unit cell having dimension , a = b c, alpha, beta, gama = 90^o is known as.

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Cubic

Hexagonal

Orthorhombic

None of them

Equilibrium constant Kp and Kc are related as

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Kc = Kp (RT)delta n

Kp = Kc (RT)an

Kp = (Kc/RT)delta n

Kp -Kc = (RT)delta n

The law which relates the solubility of a gas to its pressure is called.

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Raoult's law

Nernst law

Ostwald's law

Hennery's law

Which of the following orbitals does not make sense.

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6f

4f

7s

2d

The mole of photon is knonw as.

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Quantum

Einstein

Energy packet

None of the above

According to the Grothus -Draper law

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Only absorbed light is effective in producing photo chemical changes

Only light between certain wavelengths

Light is effective only for photo chemical reactions is solution

The light absorbed in proportional to its intensity

Equal volumes of all gases, under similar conditions of temperature and pressure, contain equal number of molecules. This is a statement of.

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Graham's law

Dalton's law

Avogadro' law

Boyle's law

The temperature at which two conjugate solutions change into one homogeneous solution is called.

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Azeotrope

Conjugate temperature

Consolute temperature

Transition temperature

CO belong to which group.

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C_2v

D_2h

C_av

D_ah

Which of the following statement is not correct regarding galvanic cells.

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Oxidation occurs at the anode

Ions carry current inside the cell

Electrons flow around the external circuit. form cathode to anode

When the e.m.f. of the cell is positive cell reactionis spontaneous

For dilute solutions colligative properties depend on.

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The number of the particles of the solute and nature of solvent.

The number of the solute particles and on their nature

The number of the solute particles and nature of solute and solvent

The number of the solute particles and irrespective of the nature of the solute and solvent.

The emission of light in a biological reaction is known as

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Fluorescence

Phosphorescence

Bioluminescence

Photolysia

Which of the following statement is not correct with reference to cell constant.

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The dimensions of cell constant is cm-1

It is used to determine the specific conductance

It is measured with KCl solution

Specific conductance does not vary with concentration.

The number of degrees of freedom and number of components for a system of containing undissolved salt , in equilibrium with water vapor are.

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2,2

3 , 2

1 , 1

1 , 2

Which of the following statement is not true with respect to photo chemical reactions.

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These take place in the presence of light

Free energy of these reactions may be positive or negative

Light intensity affect these reactions

Temperature has significant affect n rate of these reactions

Which of the following is not related to the limitations of Bohr's model.

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It does not applicable to more than one electron system.

It does not explain the extra lines obtained in the H-spectrum

It considers the electron as particle

It considers the electron as a wave.

'A line, a point or a plane about which a symmetry operation is performed, is known as.

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Symmetry operation

Symmetry element

Reflection

Inversion

Smoke is a dispersion of

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Gas in gas

Gas in solid

Solid in gas

Liquid in gas

The stabilization of the dispersed phase in a lyophobic sol is due to

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Liking for the dispersion medium

The surface tension of the medium

The formation of an electrical layer between the two phases

The viscosity of the medium

During the titration of weak acid against NaOH the conductance of the solution after the neutralization point.

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Is constant

Decreases

Varies irregularly

Increase

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