Question # 1

The most suitable temperature for preparing ammonia gas is

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250℃

450℃

350℃

550℃

Which of the following wast material is not recycled for use again?

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glasses

paper

plastic toys

hides of animals

The reaction which is zero order

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Decomposition ofN2O5

Formation of Glucose in plant

Formation of Fel2

Chorination of methane in sunlight

Which of the following tests helps to distinguish between alkyne and alkene?

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Lucas test

Tollen's reagent test

Baeyer's test

Fehling's solution test

The boiling point of H2O is 100°C while that of C2H5-OH is 78.5C°. The reason is that:

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H2O molecules are small-sized

the bond angles at oxygen atom are different

C2H5-group is electron donating

the number of H-bonds are greater in H20, than C2H5-OH

Which compounds is alicyclic in nature?

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Cyclobutane

Iso-bstand

n-Butane

Toluend

Which of the following is a strong acid

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CH3COOH

C2H5OH

HCOOH

Phenol

The boiling points of the halogens

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increases down the group

decreases down the group

remains constant

can not be predicted

Which is biopolymer?

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Plastic

Rubber

synthetic fiber

Lipid

The kinetic energy of 4 moles of nitrogen gas at 127°C is? cals.(R = 2 cal mol^-1 K^-1)

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4400

3200

4800

1524

Which of the following are not known to form compounds in more than one oxidation state?

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Transition metals

Halogens

Alkali metals

Noble gases

Permonosulphuric acid is known as

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Marshall's acid

Carlo's acid

Sulphuric acid

None of these

The fibre which is made from acrylonitrile as monomer:

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PVC

Rayon fibre

Acrylic fibre

Polyester fibre

[Cu[NH₃)₄]⁺²will form ______ structure

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Square planar

Tetrahedral

Octahedral

Trigonal bipyramidal

Prevention of corrosion of iron by Zn coating is called

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Galvanization

Cathodic protection

Electrolysis

Photoelectrolysis

The rate of reaction :

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Increase as the reaction proceeds.

Decreases as the reaction proceeds.

Remains the same as the reaction proceed.

May decrease or increase as the reaction proceeds.

Alkyl benzenes are readily oxidized by axidfied

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KMnO₄

K₂CO₃

MnO₄

H₂SO₄

The process of electrical coating of one metal on another to protect, decorate or to have greater resistance to corrosion is called

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Electroplating

Electrolysis

Conduction

Induction

The stability of acromatic compounds decreases with ------- in the no. of its resonance structure

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Decrease

Increase

Remain constant

Partially decreases

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-110.7 KJ/mole

+110.7 KH mole^-1

676.7 KJ mole^-1

+393.7 KH mole^-1

Coligative properties are the properties of

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Dilute solution which behave as nearly ideal solutions

Concentrated solutions which behave as nearly non-ideal solution

Both (i) and (ii)

Neither (i) and (ii)

Cathode rays emitted from cathode are

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Canal rays

Protons

Electrons

Positrons

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