Question # 1

Alcohols are named by replacing 'e' of alkane with:

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al

ene

ol

one

3.01 x 10²²Ag⁺ions is present in

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85 grams AgNO₃

0.85 g AgNO₃

8.5 g AgNO₃

18.5 g AgNO₃

Which is not the affect of polluted air on environment

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Acid rain

Smog

Ozone

Global warming

Which has soapy touch?

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Na2B4O7

H3BO3

Ca2B6O11

HBO2

Which of the following discoveries resulted in a version of the Mendeleefs

periodic law

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The nucleus of atom by Rutherford

The elements polonium and radium by the Curies

Atomic numbers by Moseley

x-rays by Roentgen

The total number of orbitals in a shell with principal quantum number 'n' is

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2n

2n²

n²

n + 1

A solution of NaOH has pH = 13, then concentration of NaOH is

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10^-13M

10¹³M

10^-1M

10⁺¹M

During reaction of O₂and alkenes, a product:

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Glycol

Epxide

Halohydrin

Ethylene glycol

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Introduction of an inert gas at constant volume

Introduction of PCl₃(g) at constant

Introduction of PCl₅(g) at constant volume

Introduction of Cl₂at constant volume

The widely used nitrogen fertilizer that contains about 46% nitrogen is

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Ammonia

Ammonium nitrate

Ammonium sulphate

Urea

The functional group of acid amide is

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Formation of PVC form vinyl chloride is an example of

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Substitution reaction

Addition polymerization

Condensational reaction

Aldol condensation

The acid present in vinegar is

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CH₃COOH

HCI

H₂SO₄

HCOOH

Ionization energy depends upon

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Nuclear charge

Atomic size

Shielding effect

All of the above

Carbolic acid is the other name for

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Methanol

Ethanol

Propanol

Phenol

Grignad reagent is reactive due to

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The presence of halogen atom

The presence of Mg atom

The polarity of C - Mg bond

None of above

The credit of discovering neutron goes to

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Rutherford

Langmuir

Chadwick

Austen

Environmental pollution affects

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Biotic components

Plants only

Man only

Biotic and abiotic components of environment

What is the maximum mass of aluminium which can be obtained from 240g of aluminium oxide Al₂O₃?

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26 g

127 g

51 g

108 g

An excess of aqueous silver nitrate is added to aqueous barium chloride and precipitate is removed by filtration. What are the main ion in filtrate?

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Ag⁺ and NO_3- only

Ag⁺ and Ba² and NO^-3

Ba² and NO^-3

Ba² and NO^-3and Cl-

Which of the following with aqueous KOH will give acetaldehyde?

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1, 2-Dichloroethane

1,1-Dichloroethane

Chloracetic acid

Ethyl chloride

When two hydrogen atoms approach to form a chemical bond

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The repulsive forces dominate the attractive forces

The attractive forces, dominate the repulsive forces

The energy of atoms increases

The two atoms start ionization

α-Amino acids are found in protein. Which of the following is anα-amino acid

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SO₂Makes ______ acid rains

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Carbonic acid

Sulfuric

Nitric acid

All of these

The compound which gives oxygen on moderate heating is

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Zinc oxide

Mercuric oxide

Aluminium oxide

Ferric oxide

Content of carbon in steel is:

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0.12 to 0.25%

0.25% to 2.5%

3.0 to 3.5%

4.0 to 4.5%

The catalyst,. which is used as specialist for cracking, are

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Aluminates

Alumlnosilicates

Aluminium slats

All can be used

Distillation of calcium salts of acetic acid and formic acids gives acetaldehyde. What compound would be obtained if only calcium salt of acetic acid is distilled

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Formaldehyde

Butyraldehyde

Propionaldehyde

Acetone

The shape of CIO^-₃according to valence shell electron pair repulsion theory will be

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Planar triangle

Pyramidal

Tetrahedral

Square planar

An organic compound 'A' has the molecular formula C₃H₆O, it undergoes iodoform test. When saturated with HCl it gives 'B' of molecular formula C₉H₁₄O. A and B, respectively are

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Propanal and mesitylene

Propanone and mesityl oxide

Propanone and 2, 6-dimethyl-2,5-heptadien-4-one

Propanone and mesitylene oxide

What is the structure of the ester formed from propanoic acid and ethanol

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Alkyl halides are reactive :

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High

Medium

Less

Least

Scientific study of fermentation was first made by

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Buchner

Liebig

Biot

Pasteur

Osmotic pressure of a solution increases by

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Decreasing the temperature

Increasing the volume

Increasing the number of molecules of the solute

None of the above

Dehydration of allcohol gives:

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Alkane

Alkene

Aldehyde

ketone

Hydrocarbons are organic compounds which contain elements such as

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Hydrogen

Carbon

Hydrogen and carbon

Halogens

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