Question # 1

The halide which is not hydrolysed is

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SiCl₄

SiF₄

CCl₄

PbCl₄

The following has zero valency

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Na

Be

Al

Kr

Dolomite has the composition

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KCL.MgCL₂.6H₂O

Na₃AIF₆

CaCO₃.MgCO₃

CaCL₂.MgCl_2.6H₂O

Which of the following is different from the other three oxides?

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MgO

SnO

ZnO

Cr₂O₃

Dilute hydrochloric acid solution cannot be concentrated by boiling beyond

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11%

33%

44%

22%

Salol is prepared from

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Salicyclic acid and phenol

Salicyclic acid and methyl alcohol.

Both

None

Which of the following is not present in RNA?

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Uracil

Thymine

Ribose

Phosphate

The osmotic pressure of solution increases if

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Temperature is decreased

Solution constant is increased

Number of solute molecules are increased

Volume is increased

Bromine is obtained on a commercial scale from

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Caliche

Carnallite

Common satl

Cryolite

Setting of Plaster of Paris involves

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Oxidation with atmospheric

Combination with atmospheric CO₂

Dehydration

Hydration to yield another hydrate

Toluene can be oxidized to benzoic acid by

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KMnO₄(alk)

K₂Cr₂O₇(acidic)

Both

None

Covalent compounds are soluble in

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Polar solvents

Non-polar solvents

Concentrated acids

All solvents

The wire in the flash bulbs is made up of

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Mg

Ba

Cu

Ag

The reagent which forms crystalline osazone derivation when treated with glucose is

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Fehling solution

Phenyl hydrazine

Benedict solution

Hydroxyl amine

Sodium metal cannot be stored under

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Benzene

Kerosene oil

Alcohol

Toluene

Sulphonation of benzoic acid produces mainly

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o-Sulphobenzoic acid

m-Sulphobenzoic acid

p-Sulphobenzoic acid

o- and p-Sulphobenzoic acid

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