Question # 1

Which of the following analytical method is based on the rotation of light ratiation

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Refractomerty

Polarimetry

Interformetry

Polarography

Which of the following cast irons is a high carbon silicon alloy.

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Gray iron

White iron

Malleable iron

Alloy iron

Which of the following statements correct regarding copper.

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It is used in electroplating

Its salts are used as insecticides

Its salts are used as coloring materials

All are correct

H2SO4 is manufactured by

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The lead chamber process

The contact process

Both A and B

The Ostwald's process

Boric acid is added to glass because is.

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Makes the glass opalescent

Reduces the coefficient of expansion

Makes the glass brittle

Increase refractive index of the glass.

A silver iodide and was prepared by mixing KI and AgNO2 solution with the AgNO2 in slight excess. Which of the following descriptions is correct regarding is not particles.

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Negatively charged because of the excess of NO-3 ions

Positively charged because of the excess of Ag+ ions in the AgI lattice

Negatively charged because I ions are adsorbed from the KI solution

Neutral

Which of the following chemical strong oxidizing agent is used in COD test.

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KMnO4

H2SO4

CH3COOH

K2Cr2O7

The concentration required to give a signal equal to three times the standard deviation of the baseline is called.

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Sensitivity

Detection limit

Signal to noise ratio

None of the above

The element having electronic configuration 1s2, 2s2, 3s2, 3p3 is.

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Trivalent only

Tetravalent only

Trivalent and pentavalent

Pentavalent only

Which two atoms of hydrogen combine to form a molecule of hydrogen gas. the energy of the hydrogen molecule is.

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Higher than that of separate H atoms

Equal to that of separate H atoms

Lower than that of separate H atoms

Sometimes lower and sometimes higher than that of separate H.

In group theory the triple degenerate set is denoted by

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eg

t2g

e2g

tg

For one mole a gas, the total kinetic energy is equal to.

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2/3 Rt

3/2 RT

2/3 kT

3/2 kT

Which of the following has the bighest value.

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Transnational partition function

Rotational partition function

Vibrational partition function

Electronic partition function

Which of the following is a natural polymer

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Nylon

Leucite

Cellulose

Polystyrene

Which of the following hydroxide is getatinous in nature.

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Fe(OH)3

Al(OH)3

Ca(OH)3

Cr (OH)3

Calcium cyanamide on treatment with steam under pressure gives NH3 and

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Calcium carbonate

Calcium hydroxide

Calcium oxide

Calcium bicarbonate

A colorless gas with pleasant odour and sweet taste.

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N2O

N2O3

NO

N2O4

Which of the following iso -electronic ion would require least energy for the removal of electron.

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Ca2+

Cl-

Ar-

K+

The most promising technique for solar production of electricity is.

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Dry cell

Battery

Solar cell

None of above

The designation of an orbital with n =4 and l = 1 in

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4 s

4 p

4 d

4 f

A 2M solution of H2SO4 would have how many moles of H+ ion in one liter

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1.0

2.0

4.0

5.0

in monel metal copper is alloyed wiht which metal.

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Fe

Mn

Ni

All

What is caustic potash

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NaOH

KOH

NaCl

KCl

In XeF2 molecules, Xe atom undergoes hybridization

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spd

sp2

sp3

sp3d

The number of bonds formed by the central atom is called its.

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Valence number

Complex number

Coordination number

Avogadro's number

Which of the following is the best indicator for titration of CH3COH with NaOH

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Methyl orange

Methyl red

Phenophthalein

Eosin

The coordination number of closely packed hexagonal is.

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4

6

8

12

Which element are non metals.

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N & P

Sb & Bi

As & Sb

N & Bi

Petroleum is formed from

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Domestic animal

Organisms in sea

Wild animals

All above

Cyclic polymers of ethylene glycol formed by condensation are called.

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Crown ether

Brown ether

Cryptates

Both A and C

Strong field ligands such as CN

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Usually produce high spin complexes and small crystal field splitting

Usually produce low spin complexes and small crystal field splitting

Usually produce low spin complexes and high crystal field splitting

Cannot form low spin complexes

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