Question # 1

Reaction of ethylamine with chloroform in alcoholic KOH producers

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CH₃OH

CH₃NC

C₂H₅NC

C₂H₅CN

Which one is the property of an ideal solvent

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Should be expensive

It should react chemically with the solute

Impurities should crystallize along with the solute

Should be safe to use

A certain liberate 0.5 g of hydrogen in 2 h. How many grams of copper can be liberated by the same current flowing for the same time in a copper sulphare solution?

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12.7 gm

15.9 gm

31.8 gm

63.5 gm

Which of the following fluorides of xenon in impossible?

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XeF₂

XeF₃

XeF₄

XeF₆

The halide which is not hydrolysed is

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SiCI₄

SiF₄

CCI₄

PbCI₄

Natural fertilizer from plants and animals provide nitrogen

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1.5 kg

3.0 kg

4.5 kg

6 kg

A clathrate may be defined as a

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Cage compound

Liquid crystal

Mixture

Solid solution

Which is the most volatile compound?

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HI

HCI

HBr

HF

The essential component of organic compound is

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O

C

P

N

Formic acid is obtained when

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Calcium acetate is heated with conc.H₂SO₄

Calcium formate is heated with calcium acetate

Glycerol is heated with oxalic acid

Acetaldehyde is oxidized with K₂CrO₇and H₂SO₄

Which of the following has greatest reducing power?

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HI

Hbr

HCI

HI

The kinetic theory of gases predicts that total kinetic energy of a gaseous assemble depends on

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Pressure of the gas

Temperature of the gas

Volume of the gas

Pressure, temperature, and volume of the gas.

The total pressure exerted by a number of non-reacting gases is equal to the sum of partial pressure of the gases under the same conditions is known as

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Boyle's law

Charle's law

Avogadro's law

Dalton's law

Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?

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Chlorination, nitration, reduction

Nitration, Chlorination, reduction

Nitration, reduction, chlorination

Nitration, reduction, acylation, chorination, hydrolysis

During the folding of filter paper the apex form angle of about

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80°

60°

180°

90°

Tollen's reagent is

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Ammonical cuprous chloride

Ammonical cuprous oxide

Ammonical silver bromide

Ammonical silver nitrate

Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBH₄or LiAIH₄?

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1-Propanol

2-Propanol

2-Methyl-2-propanol

Ethanol

Which of the following alkali metal hydroxides is the strongest base?

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LiOH

NaOH

KOH

CsOH

Inert pair effect plays an important role in case of

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F

Al

Si

Tl

If N_Ais Avogadro's number, then number of valence electrons in 4.2 g of nitride ions N^3-is

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2.4 N_A

4.2 N_A

1.6 N_A

3.2 N_A

Which has largest radius?

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CO³⁺

Mn³⁺

Fe³⁺

Cr³⁺

The pure crystalline substance on being heated gradually first forms turbid liquid at constant temperature and still at higher temperature turbidity completely disapp-ears. The behaviour is a characteristic of substance forming

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Allotropic crystal

Liquid crystals

Isomeric crystals

Isomorphous crystals

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