Question # 1

The highest melting point is observed by

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Butanoic acid

Propanoic acid

Pentanoie acid

HCI

In which of the following Equilibria will Kc and Kp have not the same value

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2HI <--------> H2+I2

2SO2 + O2 <--------> 2SO3

N2 + O2 <---------> 2NO

All of these

Formation of Picric acid from phenol needs heating, one possible reason for it is

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acidity of phenol

e- donating nature of-OH

acidity of picric acid

e- with drawing effect of- NO2

Substance which is formed as well as consumed during a chemical reaction and have temporary existence.

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Reactant

product

Catalyst

Intermediate

Choose the difference between natural and synthetic fertilizers:

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shapes

usage

crop application

raw material

For a chemical reaction to occur

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The vessel shall be open

Reacting molecules should have less energy than Ea at time of collision

Reacting molecules must be properly oriented and energy more than or equal to Ea

The reacting molecules must not collide with each other

London forces are

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stronger than dipole-dipole interactions

weaker than dipole-dipole interactions

equal to dipole-dipole interactions

sometimes stronger and sometimes weaker than dipole-dipole interactions

Petroleum or crude oil is a complex mixture of compounds mainly:

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benzene

minerals

hydrocarbons

phenols

The Catalyst used in the contact tower for the manufacture of H₂SO₄ is easily poisoned by:

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Nitrous oxide

Nitrogen gas

Arsenic oxide

Carbon dioxide

If increase in temperature and volume of an ideal gas is two times, then the initial pressure P changes to

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4P

P

2P

3P

Which is a good nucleophile as well as a good leaving group?

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F-

Cl-

Br-

I-

Which of the following compounds gives red precipitate with AgNO₃?

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Kl

K₂CrO₄

NaBr

NaNO₃

Which of the following statements is true about Galvanic cell

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Anode is negatively charged

Reduction occurs at anode

Cathode is positively charge

Reduction occurs at cathode

[Co(NH₃)₆]³⁺will form ______ structure

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Square planar

Tetrahedral

Octahedral

Trigonal bipyamidal

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0.073

0.147

0.05

0.026

The atom of an element is

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The smallest particle

The fundamental particle

The independent particle

The charged particle

Hybridization of each carbon atom in benzene ring is

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sp hybridized

sp²hybridized

sp³

dsp²

pH of the human blood which is essentially maintained constant due to carbonates, biocarbonates, phosphates etc., is

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7.00

7.25

7.35

7.47

Acetamide and NaOBr/OH^-produce

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Ethanamine

Methanamide

CH₃CN

NH₃

NaH is

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Ionic hydride

Complex hydride

Covalent hydride

Interstitial hydride

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

Formalin is an aqueous solution of

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Furfural

Fluorescein

Formaldehyde

Formic acid

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