Question # 1

Ozone in most of the tropical regions acts as a pollutant and cause

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damages to eyes

aggravates asthma

chest discomfort

all of these

Molar volume of CO₂ is maximum at

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NTP

0°C and 2.0 atm

127°C and 1 atm

273°C and 2.0 atm

Viscosity of a liquid is measured by

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barometer

thermometer

viscometer

manometer

Oils and fats belong to the class of

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Alcohols

Hydrocarbons

Acids

Esters

Phenol is colourless, crystalline and solid

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Hygroscopie

Deliquescent

Moistening

Odourless

What is the formula of silica?

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Si2O3

SiO2

Si3O4

SiO-

Which is most acidic?

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H2O

C2H5OH

C4H9OH

CH3-CH2-CH2OH

Bonding in MgO is an example of

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lonic bond

Polar bond

Covalent bond

Coordination covalent bond

In the atosphere, CO₂is about

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0.01%

0.03%

0.05%

0.09%

Molar mass of formic acid in benzene comes out to be

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64

46

32

92

One of the following is potically non active amino acid

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Valine

Tyrosine

Glycine

Theronine

f-block elements are called :

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Alkali metal

Alkakline earth metals

Transition elements

Electron deficient elements

A cell in which spontaneous redox reaction generates an electric current is called

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Electrolytic cell

Electrochemical cell

Voltaic or Galvanic cell

Biological cell

Addition of iron fillings to CuSO₄solution caused precipitation of Cu owing to the

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Reduction of Cu²⁺

Oxidation of Cu²⁺

Reduction of Fe

Reduction of Fe³⁺

Which of the following phosphorus is most reactive?

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Red phosphorus

White phosphorus

Scrlet phosphorus

Violet phosphorous

Which of the following is a tetrabasic acid?

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ORthophosphoric acid

Hyposphosphorus acid

Metaphosphoric

Pyrophosphoric acid

The amount of Ni in stainless steel is

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3%

4%

5%

8%

SN₂reaction has order of reaction :

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First

Second

Third

Zero

A single chlorine free radical can destroy how many ozone molecules

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100

100000

10000

10

The formation of PVC from vinyl chloride is an example of

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Substitution reaction

Addition polymerization

Condensation polymerization

Condensation reaction

The change in concentration of reactant or product per unit time is called :

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Rate constant.

Rate of reaction.

Rate equation.

Rate law.

Compounds having the same molecular formula, but different functional groups show

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Metamerism

Position isomerism

Chain isomerism

Functional group isomerism

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