Question # 1

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 factor is helping to reduce the environment pollution

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rapid growth population

urbanization

idustrialization

increase of plantation

Amount of fresh water used by agriculture is

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2%

23%

69%

97%

Mg(s) + 2HCI(aq). ------------ MgCl2(aq)+ H2(g)

Given that; Mg=21g and HCI=21g, the excess reactant is

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Mg

HCI

Both are in stoichiometric amounts

None of these

Which of the following is a pseudo solid?

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CaF₂

glass

NaCl

all these

The crystals formed due to London forces of interaction are

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ionic

covalent

molecular

metallic

Reactivity of carbonyl compounds is due to

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Electrophilic carbon

Less stearic hindrance

Unsaturation of Co

Polarity of bond

All are dicarboxylic acids except

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Oxalic acid

Malonic acid

Picric acid

Tartaric acid

If v is the volume of one molecule of a gas under given conditions, then Van der Waals constant b is (N_Ais Avogadro number)

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Which does not affect vapour pressure

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Nature of liquid

intermolecular forces

Temp

None of these

What will be the pH of 1.0 mol dm-3 of NH4OH, which is 1% dissociated

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2

12

0

2.7

Ethyl bromide is formed by the reaction of HBr with

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Ethane

Ethene

Ethyne

Propane

Setting time of cement is controlled by adding:

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Epsom

Gypsom

CaCO₃

CaCl₂

A fat or oil is characterised for extent of unsaturation by one of the following number, which one

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Rancidity number

Acid number

Iodine number

Saponicfication number

A dry alkaline cell has porous Zn anode and MnO₂as cathode the electrolyte used is

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Ca(OH)₂

NaOH

KOH

NH₄OH

Which one of the following has highest density

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Zn

Os

Ni

Cu

The only alcohol that can be prepared by the indirect hydration of alkene is

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ethyl alcohol

propyl alcohol

isobutyl alcohol

methyl alcohol

Inter molecular forces in solid hydrogen are

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Covalent forces

Van der Waal forces or London dispersion forces

Hydrogen bonds

All of these

Coordination sphere may be:

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Cationic

Anionic

Neutral

All above

Ethyl acetate reacts with CH₃MgBr to form

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Secondary alcohol

Tertiary alcohol

Primary alcohol and acid

Acid

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1st order

2nd order

Zero order

3rd order

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

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