Question # 1

Which of the following are characteristics of oxidizing smog?

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It is yellow brownish grey haze

It has unpleasant odour

Its main reactant are nitric oxide & unburnt hydrocarbon

All of the above

There is more deviation in the behaviour of a gas from the ideal gas equation PV = nRT

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At high temperature and low pressure

At low temperature and high pressure

At high temperature and high pressure

At low temperature and low pressure

How many zones through which the charge passes in a rotary kiln?

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4

3

2

5

Which of the following least resemble an ideal gas?

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ammonia

helium

hydrogen

trichloromethane

Pressure of 1Nm^-2 is equal to

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One bar

1 psi

One pascal

One atmosphere

A molecule of polysaccharide on hydrolysis produces _________ molecules of monosacharides:

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many

Few

2-10

100

Ionic solids are characterized by

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low melting points

good conductivity in solid state

high vapour pressure

solubility in polar solvents

All the Hydrolytic reactions are

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First order

Second order

Third order

pseudo-first order

In most of the cases the molecular crystals are

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very soft

soft

extremely hard

sufficiently hard

Amino acids which contain two amino groups are called

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Acidic amino acids

Basic amino acids

Neutral amino acids

Amphoteric amino acids

Chemicals used to kill insects are:

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Herbicides

Insecticides

Pesticides

Fungicides

The carbon of a carbonyl group is:

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sp hybridized

sp²hybridized

sp³Hybidized

None of these

When aqueous solution of NaOH is electrolysed useing graphite electrodes, the product obtained at anode is

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O₂gas

H₂gas

Na metal

Na₂O

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High temperature and low pressure

Low temperature and low pressure

Low temperature and high pressure

High temperature and high pressure

Which is more active ?

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Alkanes

Alkenes

Alkynes

Benzene

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

Baukelite is a polymer obtained from two monomers

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Phenol and ethanol

Phenol and methanol

Phenol and methanal

Phenol and acetone

Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?

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Chlorination, nitration, reducing

Nitration, chlorination, reducition

Nitration, reduction,chlorination

Nitration, reduction, acylation, chlorination, hydrolysis

Kinetic energy of the molecules is due to

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Transnational motion

Rotational motion

Vibrational motion

All of these

A molecule of haemoglobin is made up if nearly

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10,000 atoms

50,000 atoms

2500 atoms

1500 atoms

Which of the atoms has 1s², 2s², 2p_x²2p¹_y2p¹_zconfiguration

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Nitrogen

Carbon

Fluorine

Oxygen

Which of the following does not turn Schiff's reagent to pink?

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Formaldehyde

Bezaldehyde

Aceton

Methyl chloride

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