Question # 1

One mole of SO2 contains

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6.022 x 10(23) atoms of oxygen

6.022x 10 ê23 atoms of sulfur

18.1x 10 (23) molecules of SO2

4 g molecule of SO2

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

Nylon 6, 6 is a condensation polymer of

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Phthalic acid and hexa ethylene diamine

Adipic acid and hexaethylene diamine

Phthalic acid and glycerol

Adipic acid and glycerol

Denaturation of protein means the structure of protein is distrupted. indicate which factor does not denature protein

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heating protein

pH changes

oxidising agent

keeping pH 7.35

Kinetic energy of one mole of an ideal gas at 300 K in kJ is

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34.8

3.48

3.74

348

Potable water is considered to be:

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safe for human consumption

the ground water

the Surface water

now water is due to the salt of:

Deposition of cholesterol in arteries is responsible for:

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Heart attach

diabetes

hepatitis

cancer

A molecule oilgosacharide on hydrolysis produces _____ molecules of monosacharide:

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1

2

4

6

The forces of attraction between ions and water molecules are known as

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dipole-dipole forces

London forces

dipole- induced dipole forces

ion-dipole forces

The attracted forces which are created due to repulsion of electronic cloud of the molecules are:

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ion-dipole forces

dipole-dipole forces

dipoles-induced dipole forces

instantaneous dipole-induced dipole

Which one of the following does not act as pollutant

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Carbon monoxide

Sulphur dioxide

Hydrocarbons

Carbon dioxide

Ethanal may be converted into a three-carbon acid in a two-step process.

Which compound is the intermediate

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CH₃CO₂H

CH₃CN

CH₃CH₂CN

CH₃CH(OH)CN

Butyric acid was named from butyrum means:

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Red out

Vinegar

Butter

Milk

When acetic acid and ethanol react together an ester is formed which is called

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Ethyl ester

Ethanoic acid

Ethyl acetate

Sodium is manufacture by the electrolysis of fused sodium chloride and not from an aqueous solution of sodium chloride because

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Sodium chloride does not ionize in the water solution

Sodium chloride is not soluble in water

Sodium deposited at the cathode may react with water to form sodium hydroxide

Electricity does not pass through aqueous NaCl

An alcohol with molecular formula C_nH_2n+1OH has a chiral carbon atom but does not react with MnO^-₄/H⁺what is the least number of carbon atoms such an alcohol could possess

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5

6

7

8

During electrolysis, electrons are :

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Lost by anions and gained by cations

Gained by anions and lost by cations

Gained only

Lost only

Which is the transition element among the following

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B

Al

Cu

Cs

Tetraethyle lead causes disease:

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Typhoid

Respiratory

Stomach

Muscular

The covalent radius of Cl atom is:

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99.4 pm.

176.7 pm

38 pm

76 pm.

White phosphorus is

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A mono atomic gas

P₄, a tetrahedral solid

P₈, a crown

A linear diatomic molecule

which one of the following is not a nucleophile?

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H₂O

H₂S

BF₃

NH₃

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