Question # 1

HNO₂acts as an/a

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Acid

Oxidizing agent

Reducing agent

All the three

A solution sucrose is 34.2%. The volume of solution containing one mole of solute :

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342cm³

1000cm³

500cm³

242cm³

What element is not essential the growth of plants and is not required in the fertilizers

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Nitrogen

Potassium

Phosphorus

Barium

The wave number of the line emitted is 109.678 x 10⁵m^-1in the Lyman series when electron transition occurs

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Purine derivative among the following bases is

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Thymine

Uracil

Guanine

Cytosine

The percentage of carbon in different types of iron products is in the order of:

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Cast iron > wrought iron > steel

wrought iron > steel > cast rion

Cast iron > steel > wrought iron

Cast iron = steel > wrought iron

Which of these polymers is an addition polymer

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Nylon 6,6

Polystyrene

Terylene

Epoxy resin

Ionic hydrides are generally

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Liquid at room temperature

Good electrical conductors

Good reducing agents

Easily reduced

Which of the following forms a toxic substance in blood by combing with hemoglobin?

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Carbon dioxide

Carbon monoxide

Oxygen

Methane

Sodium hexametaphophate is known as

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Calgon

Permutite

Natalite

Nitrolim

Coordination number of Pt in [PtCl (NO²) (NH³)⁴]^2-

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2^-

4

1

6

Azeotropic mixture of HCl and water has

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48% HCl

22.2% HCl

36% HCl

20.2% HCl

Which of the following oxides is amopheric in character?

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CaO

CO₂

SiO₂

SnO₂

10g Of NaOH Has Been Dissolved Perdm³of solution. The morality of solution is :

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0.025 M

1.5 M

0.1 M

.25 M

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Fe is reduced

Fe is oxidized

Cl₂is oxidized

None of these

When alkyl halides are heated with aqueous solution of ammonia at about 100°C, amines are formed. This reaction is known as

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Williamsons synthesis

GHoffmans reaction

Wurtz reaction

Clemensen reaction

The solution of which acid is use for seasoning of food?

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Formic acid

Acetic acid

Benzoin acid

Butanoic acid

Which of the followings is not a nulceophile

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OH^-

NH₃

C₂H₅O^-

Br₂

The function of salt bridge in the galvanic or voltaic cell is to

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Carry out oxidation at anode

To carry out reduction at cathode

Carry out electrolysis

To prevent the net charge accumulation in either of the half cells

All reactions occur in :

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A single step.

A series of steps

Two steps.

Both (a) and (b)

Dehydrohalogenation of alkyl halides produces

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Alcohol

Alkane

Alkene

Alkyne

Alkyl halides are considered to be very reactive compounds towards nucleophiles, because:

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They have an electrophilic carbon

They have an electrophilic carbon and good living gorup

They have an electrophilic carbon and bad living group

They have an nucleophilic carbon and good living gorup

Which bond is most stable

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C - Cl

C - F

C - Br

C - I

Tollen's reagent is

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Ammonical cuprous chloride

Ammonical cuprous oxide

Ammonical silver bromide

Ammonical silver nitrate

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0.073

0.147

0.05

0.026

Monosaccharides are

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Aldoses

Ketoses

Either a and b

None of these

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Diastase

Lipase

Inverters

Zymase

NaH is

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Ionic hydride

Complex hydride

Covalent hydride

Interstitial hydride

Coordination sphere may be:

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Cationic

Anionic

Neutral

All above

The heat energy change during a chemical reaction at constant pressure and at a given temperature is called

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Change in internal energy

Enthaply change

Temperature change

Work done by the system

Plaster of pares is obtained by heating

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Gypsum

Epsom

Lime stone

Dolomite

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