Question # 1

It has been observed that if one goes on adding KNO3 solution to a precipitate of AgCl the solubility of these precipitates goes on increasing with increasing concentration of K+ and NO3= ions which are not common to AgCl This is due to which effect.

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Divers ion effect

Uncommon ion effect

Activity effect

All above

carbon monoxide is harmful to human beings as it.

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Is carcinogenic

Is antagonistic to CO2

Has higher affinity for haemoglobin as compared to oxygen

Is destructive to O3

Equivalent conductance is expressed in the units.

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S cm-1 eq -1

S cm eq-1

S cm2 eq-1

S cm2 eq

In each period the most electro negative element belongs to.

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^{Group -1}

Group -17

Group -2

Group -18

If the values of standrd deviations for the first and second method differ, then which of the following test helps one to know whether this difference is significant.

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Student's test

F-Test

Chi square test

Standard deviation

The particles of about 1 nm need _______ activation energy to enter either aggregation processes or reactions to give to new chemicals.

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Higher

Lesser

N o

All above

All steroids on heating wish solenium give

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phenanthrene

Cholesterol

Diels hydrocarbon

Isoprene

The theoretical plate in chromatography is represented by how many equilibrium step

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One

Two

Three

Four

Which isotope of hydrogen is radioactive in nature.

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Protium and deuterium

Tritium only

Tritium and deuterium

Only deuterium

Treatment of phenol with cold dilute nitric acid gives.

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Only o-nitro phenol

Only p-nitro phenol

2,4,6 -Teinitro phenol

Mixture of o-and p-nitro phenol

The decrease in electron density at one position accompanied by a corresponding increase at other position is called.

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Inductive effect

Asymmetric effect

Electromeric effect

Resonance effect

Which of the following radical is not a member of IV group.

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Mg²⁺

Co²⁺

Ni²⁺

Mn²⁺

Which of the following is not a correct postulate of the kinetic theory of gases.

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The molecules are in random motion

The gaseous collisions are perfectly elastic

The average kinetic energies of different gases are equal at a particular temperature.

The pressure exerted on the walls of the container is due to inter molecular forces.

In order to increase the rate of the reaction one should.

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Increase the concentration of products

Decrease the concentration of reactants

Decreases the concentration of products

Both C and D statement are correct

Not a Characteristic property of ceramic material

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High temperature stability

High mechanical strength

Low elongation

Low hardness

An sp3 hybrid orbital contains

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1/4 a character

1/2 a character

2/3 a character

3/4 a character

Which of the following are anionic detergents.

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Sodium salts of sulfonated long chain alcohol

Ester of stearic acid and polythlene glycol

Quaternary ammonium salt of amine with acetate ion

Sodium salts of sulfonated long chain hydrocarbons

Which of the following methods gives the number average molecular weight of a polymer.

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Light scattering method

Osmotic method

Sedimentation equilibrium method

Viscosity method

The emission of light characteristics of metal and correlation of intensity of the light emitted with concentration of that metal forms the basis of.

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Roman spectroscopy

IR spectroscopy

Flame photometry

Rotational spectroscopy

Radon is obtained only in the radioactive decay of

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Radium

Thorium

Actinium

Any of above

Which of the following has the bighest value.

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Transnational partition function

Rotational partition function

Vibrational partition function

Electronic partition function

An auxochrome is a group which

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Absorbs in UV region

Absorbs in visible region

Absorbs in IR region

Increase absorption wavelength of chromophore

In urea the amount of nitrogen is

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82.0%

46.0%

33.0%

21.0%

In propagation step the reaction intermediate of radical polymerization is

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Carbocation

Carbonion

Free radical

Carbene

Ground state electronic configuration of valence shell in N2 m lecule is written as (a2s)2, (o*2s)2 , (pi sp)4, (o2p)2, Hence, the bond order of N2 molecule is.

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1

2

3

0

The branch of physics that mathematically describes the wave properties of electron in atomic is called.

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Statistical Mechanics

Quantum Mechanics

Chemical statistics

Thermodynamics

The energy gap between tag and eg sets in denoted by

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A-

10 Dq

Both A and B

None of above

Select a basic amino acid.

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Glycine

Cystine

Alanine

Lysine

With which one of the following configurations, the lowest value of first IE is associated.

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Is2, 2s2, 2p6, 3s1

1s2, 2s2, 2p5

1s2, 2s2, 2p6

1s2, 2s2, 2p6, 3s2, 3p2

The coordination number of closely packed hexagonal is.

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4

6

8

12

According to Fajns rules, which one of following results in increased ionic nature of the covalent bond.

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Larger cation and smaller charges on anion

Larger cation and larger charge on anion

Smaller cation and smaller charge on anion

Smaller cation and larger charge on anion

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