Question # 1

On warming with silver powder,chloroform is converted into

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Acetylene

Hexachloroethane

1,1,2,2-tetrachloroethane

ethylene

In public urinals, we observe some nascent smell. This smell is due to

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Hydrolysis of urea of urine by urease of atmosphere into NH₃and CO₂

Formation of sulphonic acid by urea of urine

Reaction of CO₂of atmosphere with urea monoitrate in urine

Hydrogen present in air reacts with nitrogen forming NH₃

2SO₂+ O₂⇌2SO₂H= 188KJ mole^-1

Which statement about following equilibrium is correct :

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The value ofK_pfalls with arise in temperature.

The value ofK_pis equal tok_c.

The value ofK_pfalls with the increase pressure.

Adding V₂O₅catalyst increase the equilibrium yield of Sulphur trioxide.

Maximum freezing point falls in

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Camphor

Naphthalene

Benzene

Water

Unsaturated hydrocarbon containing a double bond are called

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paraffin

Alkanes

Olefins

Acetylene

Which of the following polymers is used for weather resistant paints

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Arcylic resins

Polyvinyl acetate

Polystyrene

PVC

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0 1

0 2

1 1

1 2

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Acidic amino acid

Basic amino acid

Neutral amino acid

None of these

Vitamin A is present in

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Liver

Milk

Green vegetables

All

For which of the following sets of quantum numbers and electron will have the highest energy?

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3,2,1,1/2

4,2,-1,1/2

4,1,0,-1/2

5,0,0,1/2

When 6s orbital is complete then next electron goes to

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6p

6d

5d

4f

Alkyle magnesium halides are known as

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Simon-smith reagent

Tollen's reagent

Grignard's reagent

Barford's reagent

Which technique is used to determine the absorption of radiations?

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Dilatometer method

Optical rotation method

Spectrometry

Refractometric method

Complete combustion of alkane yields

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CO₂+ H₂O

CO₂+ heat

CO + H₂O heat

CO₂+ H₂O + heat

Kolb's method has limited synthetic applications due to

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Expensive catalysis

Slow reaction

Number of side products produced

Salts used are very expensive

The oxide of beryllium is

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Acidic

Amphoteric

Superoxide

Basic

A standard hydrogen electrode (S.H.E) consists of a platinized platinum electrode dipped in 1 molar solution of H⁺ions and hydrogen gas is passed at a pressure of

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One pascal

One kilo pascal

One atmoshpere

Then atmoshpere

Hydrolysis of ethyl-acetate (ester) has order of reaction :

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3

2

1

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A primary alcohol

A secondary alcohol

An eher

A phenol

The decrease in radius in large for:

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Monovalent ions.

Trivalent ions.

Divalent ions.

Atoms.

From ₃₉Y to ₄₈Cd are called

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Transition elements

Outer transition elements

Inner transition elements

2nd transition series

Which electronic configuration corresponds to an element of Group ||Z-A of the periodic table?

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1s, 2s², 2p⁶, 3s², 3p⁶, 4s²

1s², 2s², 2p⁶

1s², 2s², 2p⁶, 3s², 3p³

1s², 2s² , 2p⁶, 3s², 3p¹

Internal energy of a system is equal to

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Kinetic energy of particles

Potential energy due to binding forces between particles

Sum of kinetic energy plus potential energy of the particles

Heat contents

In the electronic configuration of Cr one electron from 4s sub-shell is transfered to 3d sub-shell because

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The 3rd orbital is of lower energy than 4s

The 4s orbital is of equal energy to 3d orbital

The half filled d-subshell is more stable than incomplete d-sub shell

6 unpaired electrons make Cr more paramagnetic

C- X bond is strong in

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CH₃Cl

CH₃Br

CH₃F

CH₃I

Pb has inert pair of electrons:

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One

Two

Three

Four

Acetic Acid is obtained from:

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Red out

Vinegar

Butter

Milk

There are 20 amino acids found in protein which is not the property of these amino acids

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They are allα-amino acids

They are all optically active

They have high decomposition point

They are water soluble

Mottling of teeth is due to presence of an element in drinking water

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Mercury

Fluorine

Boron

Chlorine

The chloroform reacts with NaOH to give

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CH₃COONa

Sodium oxalate

CH₃OH

HCOONa

The formula of secondary alcohol is

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R - OH

R - CH₂OH

R₂CHOH

R₃COH

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