Question # 1

Nylon 6, 6 is prepared by the reaction of nexamethylene with

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Formic acid

Acetic acid

Adipic acid

None of these

The hydrocarbon which is used as an illuminating agent

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Methane

Methene

Methyne

B & C

Which of the following oxides is peroxide?

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Na₂O₂

MnO₂

BaO

SO₂

Which gasses are produced from landfills

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NH₃

H₂S

N₂

All of these

The elements of f-block are also known as

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Inner-transition

Outer transition

Normal elements

Alkaline earth metals

In incinerating the waste is burnt at

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1000°C

100°C

2000°C

1500°C

The order of reactivity for a given halogen in Grignard's reagent is:

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CH₃X > C₂H₅X > C₃H₄X > C₄H₄X

C₂H₅X > C₃H₇X > C₄H₅X > CH₄X

C₃H₇X > C₄H₇X > CH₃X > C₂H₅X

C₄H₄X > C₃H₇X > C₂H₅X > CH₄X

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Step 1 Step 2

HCI HCN

HcN,NaCH H₂SO₄

H₂SO₄ K₂Cr₂O₇/H₂SO₄

KCN HCI

Identify the compound formed, when ethylene combines with water in the presence of 10% sulphuric acid and HgSO₄as catalyst

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Carbinol

Methanol

Ethanol

Glycol

Which woody raw material is used of the manufacture of paper pulp

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Cotton

Bagasse

Poplar

Rice straw

According to the periodic law, the chemical properties of the elements are periodic functions of their

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Density

Atomic number

Atomic mass

Mass number

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The ionization energy of A is high and electron affinity of B is low

The ionization energy of A is low and electron affinity of B is high

Both the ionization energy of A and electron off affinity of B are high

Both the ionization energy of A and electron affinity of B are low

50 mL of 10 N H₂SO₄. 25mL of 12 N Hcl and 40 mL of 5N HNO₃are mixed and the volume of the mixture is made 100 mL by adding water. The normality of resulting will be

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1 N

2 N

3 N

9 N

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0.60

1.67

0.66

2.6

In the ground state of an atom, the electron is present:

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In the nucleus.

In the second shell.

Nearest to the nucleus.

farthest from the nucleus.

______ is used in breathing equipments for mountaineers and in space craft

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Li₂O

BeO

N₂

KO₂

No cathode rays are produced in the discharged tube when gas is under ordinary pressure even if voltage of 5000 to 10000 is applies. This reason is

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Voltage is low

Discharge tube is not coloured

Gas does not conduct current under ordinary pressure

Temperature low

Simple sugars are :

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Monosaccharides

Disaccharides

Oligo saccharides

Trisaccharides

the unreactivity of alkanes is based upon

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Inertness of sigma bond

Non-polarity of the bonds

Both A and B

None of above

Sulphuric acid generates nitronium ion by reacting with

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Nitric acid

Nitrogen gas

Nitrous acid

Potassium nitrate

Which is mild oxidizing agent ?

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Tollen's reagent

KMnO₄ / H₂SO₄

K₂Cr₂O₇ / H₂SO₄

HNO₃

Surfactants are organic compounds, used in detergents which reduce the

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Viscosity of water

Surface tension of water

Boiling point of water

Wetting ability of water

Ketones are reduced to

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Primary alcohol

Secondary alcohol

Tertiary alcohol

All of these

The rate equation for a reaction is Rate =k[A]. what are unit of K ?

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Mole-1 dm³ S^-1

Mole dm³ S^-1

Moledm³

S^-1

Which of the following is not a fertilizer

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Nitrophos

Dolomite

Super phosphate of lime

Urea

When initial concentration of reactants an order of reaction is given, then its half life period can be calculated by the equation

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The trade name of polytetrafluoroethylene (PTFE) is

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Teflon

PVC

Terelene

Polyester

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154 pm

133 pm

120 pm

150 pm

In physical and chemical properties, transition elements show

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Similarities

Dissimilarities

Both of these

Somestimes similarities, sometimes dissimilarities

Misch mental is

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An alloy of Aluminium

A mixture of chromium and lead chromate

An alloy of lanthanoid metals

An alloy of copper

The art of electroplating was given by

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Faraday

Edison

Thomas Gradam

Brugan

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