Question # 1

Formation of Picric acid from phenol needs heating, one possible reason for it is

Choose an answer

acidity of phenol

e- donating nature of-OH

acidity of picric acid

e- with drawing effect of- NO2

Simple sugars are:

Choose an answer

Monosaccharides

Disaccharides

Oligo saccharides

Trisaccharides

Electrolytic products of dilute aqueous solution of sodium sulphate is

Choose an answer

Na. SO2

H2. S02

Na. O2

H2,O2

Which of the following is not the required condition for the formation of smog

Choose an answer

Sufficient NO

Sunlight

Less movement of air

Winds

In proteins, the alpha-helix and Beta-pleated sheet are examples of

Choose an answer

^{Primary Structure}

Secondary Structure

Tertiary Structure

Quaternary Structure

Ionic solids are characterized by

Choose an answer

low melting points

good conductivity in solid state

high vapour pressure

solubility in polar solvents

(CH₂O)_nis general formula for

Choose an answer

Monosacchardies

Oligosaccharides

Polysaccharides

None of these

Surfactants are organic compounds; used in detergents which reduce the

Choose an answer

viscosity of water

surface tension of water

boiling point of water

wetting ability of water

Two or more similar monomers combine to form:

Choose an answer

Homopolymer

Copolymer

Ter polymer

Thermoplastic polymer

London forces are more affective at

Choose an answer

low temperature

high temperature

low pressure

low temperature and high pressure

Which of the following enthalpy change always have a negative value

Choose an answer

∆Hf

∆H sol

∆Hc

∆Hat

Which carbonate of alkali metals is insoluble in water

Choose an answer

Na₂CO₃

K₂CO₃

Li₂CO₃

Cs₂CO₃

Molar mass of high molecular w.f. polymers ranges from:

Choose an answer

1000 to 10000

10000 to 100000

100000 to 1000000

1000 to 100000000

During the process of crystallization, the hot saturated solution:

Choose an answer

is cooled very slowly to get large size crystals

is cooled at a moderate rate to get medium sized crystals of the product

is evaporated to get the crystals of the products

is mixed with an immiscible liquid to get the pure crystals of the product.

Which structure shows a tertiary alcohol

Choose an answer

CH₃CH₂OH

(CH₃)₂CHOH

(CH₃)₃COH

CH₂OH

Essential amino acids are those amino acids which

Choose an answer

Body can not synthesize

Body can synthesize

α-amino acids

β-amino acids

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

Choose an answer

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

Which of the following has more unpaired d-electrons?

Choose an answer

Zn⁺

Fe²⁺

Ni³⁺

Cu⁺

Choose an answer

Diastase

Lipase

Inverters

Zymase

Primary carbon attaches with other hydrogen atoms directly:

Choose an answer

One

Two

Three

At least one or more than it

When H₂and I₂are mixed and equilibrium is attained, then

Choose an answer

Amount of HI formed is equal to the amount of H₂dissociated

HI dissociation stops

The reaction stops completely

None of these

During a chemical reaction heat may be

Choose an answer

absorbed

Evolved

Both evolved and absorbed

None of these

More Classes

Other Links

Chemistry General Science Test Medium Mode MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer