Question # 1

Consider gas is measure in bars then the units of rate of reaction is

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Mole dm-3 sec

Bars sec

Mole dm-3 sec-1

Bars sec-1

Hydration of ethene is an example of

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Electrophilic addition

Electrophilic substitution

Nucleophilic addition

Nucleophilic substitution

Which is not a calcareous material?

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line

clay

marble

marine shell

The temperature in the incineration process has a range:

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900 to 1000°C

650 to 1100°C

950 to 1300°C

500 to 900°C

For reaction of methane and chlorine light is not available then

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Reaction will take place rapidly

No Reaction take place

Reaction occurs at double the rate

May all cases occur

Which of the following undergoes easy dehydration?

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3-MethyIbutan-2-ol

Ethanol

2.Methylpropan-2-ol

Methanol

Which molecule is least ionic"

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NaCI

HCL

HF

CsF

Electrolytic products of dilute aqueous solution of sodium sulphate is

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Na. SO2

H2. S02

Na. O2

H2,O2

The rate of diffusion of a gas is:

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Inversely proportional to its density.

Inversely proportional to square root of its molecules mass.

Directly proportional to molecular mass.

Directly proportional to its density.

TiCl4 is used as catalyst for manufacture of

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Sulphuric acid

Plastics

Ethanol

Tetraethyl lead

which of the following is a typical transition metal?

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Sc

Y

Ra

Co

Enthalpy of neutralization of all the strong acids and strong bases has the same value because

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Neutralization leads to the formation of salt and water

Strong acids and bases are ionic substances

Acid always give rise to H⁺ions and bases always furnish OH^-ions

The net chemical change involve the combination of H⁺and OH^-ions to form water

The positive ion is always smaller than the neutral atom while the negative ion is always bigger than the neutral atom. The atomic and ionic radii of Na, F, Na⁺, F^-are in ppm

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Na F Na⁺ F^-

157 72 95 136

Na F Na⁺ F^-

157 95 172 136

Na F Na⁺ F^-

72 95 136 157

Na F Na⁺ F^-

157 136 95 72

Which of the following represents elements in order of increasing atomic size?

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I, Br, Cl

Na, Mg, C

C, N, O

Li, Na, K

Which is not carboxylic acid with pungent smell?

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Formic acid

Acetic acid

Ethanoic acid

Butyric acid

Kinetic energy of the molecules is due to

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Transnational motion

Rotational motion

Vibrational motion

All of these

The total number of transition elements is

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10

14

40

50

Cl₂reacts with CS₂in presence of AlCl₃to form

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CHCl₃

CCl₄

C₂H₅Cl

C₂H₆

The nitration of benzene takes place when it is heated with a mixture of conc.HNO₃and conc. H₂SO₄at 50°C in ratio of

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1 : 2

1 : 1

1 : 3

2 : 1

One mole of SO₂contains

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6.02 x 10²³atoms of oxygen

18.1 x 10²³, molecules of SO₂

6.02 x 10²³atoms of sulphur

4 gram atoms of SO₂

I-Phenylethanol can be prepared by reaction of benzaldehyde with

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Methyl iodide an Magnesium

Methyl bromide

Methyl bromide and AIBr₃

C₂H₅l and Mg

Tollen's reagent is

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Ammonical cuprous chloride

Ammonical cuprous oxide

Ammonical silver bromide

Ammonical silver nitrate

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