Question # 1

In esterification, the OH of carboxylic acid is replaced by

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OR+

R+

OR

R

Absolute temperature is the temperature at which

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All molecular motion ceases

volume becomes zero

Mass becomes zero

None of these

Elimination of molecular reactions usually obey:

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first order kinetics

second order kinetics

third order kinetic

zero order kinetic

Properties of polymeric material depends upon

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Chemical composition

Structure of molecule

Boiling point

Both A and B

Cellulose is the polymer of

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α-D-glucose

β-D-glucose

Fructose

None

Deposition of cholesterol in arteries is responsible for:

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Heart attach

diabetes

hepatitis

cancer

Aniline is the derivative of the benzene containing the

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Hydroxyl group

Amino group

Amido group

Imido group

Which one of the following organic acids is made form methanol?

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acetic acid

bothanic acid

formic acid

propanoic acid

When a compressed gas is allowed to expand into a region of low pressure, it produce:

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Vapours

Cooling effect

Heating effect

None of above

At higher temperature what is true for gases

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pressure is decreased

volume is decreased

number of moles are decreased

KE is increased

Glyoxal molecule has?

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two carbonyl groups

One aldehydic and one carbonyl group

Two aldehydic groups

Two carboxyl group

Either, an organic compound has close resemblance in structure and thus a derivative of:

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Water

Oxides of lithium

Oxides of magnisium

Oxides of aluminium

Metallic conduction is due to the

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Movement of electrons

Movement of ions

Both a and b

None of these

A salt producing hydrocarbon among these compounds is

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Ehyne

Ethene

Methane

Ethane

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Measuring pH

Measuring density

Titration against standard NaOH

Titration against standard KMnO₄solution

The electrophile in aromatic sulphonation is

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H₂SO₄

HSO₄

SO₃

SO₃⁺

What is the maximum mass of aluminium which can be obtained from 240g of aluminium oxide Al₂O₃?

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26 g

127 g

51 g

108 g

Subsidiary quantum number specifies

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size of orbital

shape of orbital

orientations of orbitals

Nuclear stability

A carboxylic acid contains:

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A hydroxyl group

A carboxyl group

A hydroxyle & carboxyl group

A carboxyl &aldehyde group

4-d series is in the period:

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4th

5th

6th

7th

As the nuclear charge increases, the pull on the electrons is increased and size of an atom:

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Decreases.

Remain same.

Increases.

Is negligible.

The human body can synthesize ______ amino acids

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1

10

20

19

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