Question # 1

In the formation of NaCl crystals from its aqueous solution, its cubic shape is changed to needle like when 10% urea is present as impurity, this phenomenon is called as

Choose an answer

habit of crystal

polymorphism

anisotropy

cleavage

Third structure of protein structure refers to

Choose an answer

Number and sequence of amino acids

Three dimensional structure of protein

Proteins formed of more than one monomer

Bending of protein molecule

The average bond energy of C-Br is

Choose an answer

228 kJmol-1

250 kJmol-1

200 kJmol-1

290 kJmol-1

Which woody raw material is used for the manufacture of paper pulp?

Choose an answer

cotton

bugases

poplar

rice straw

During oxidation process, oxidation number of an element

Choose an answer

Decreases

Increases

Remains constant

Both a and b

Benzene cannot undergo the ------- directly

Choose an answer

Substitution reaction

Addition reaction

Oxidation reaction

Elimination reaction

d-d transition cannot be shows by

Choose an answer

Cu+1

Sc+3

Zn+2

All

For reaction of methane and chlorine light is not available then

Choose an answer

Reaction will take place rapidly

No Reaction take place

Reaction occurs at double the rate

May all cases occur

Fungicides are the pesticides which

Choose an answer

Kill plants

Kill herbs

Kill insects

Control the growth of fungus

Petroleum or crude oil is a complex mixture of compounds mainly:

Choose an answer

benzene

minerals

hydrocarbons

phenols

The forces which are present between the ions and the water molecules are known as

Choose an answer

dipole-induced dipole forces

dipole-dipole forces

ion-dipole forces

London dispersion forces

The tip of the funnel should touch the side of the beaker in order to avoid

Choose an answer

Splashing

Leakage

Mixing

Contamination

Preparation of ethylbenzene by the reaction of bromobenzene, ethylbromide and sodium is called

Choose an answer

Wurtz reaction

Fitting reaction

Wurtz fitting reaction

None of these

An ionic compound A+B is most likely to be formed when

Choose an answer

The ionization energy of A is high and electron affinity of B is low.

The ionization energy of A is low and electron affinity of B is high.

Both ionization energy of A and electron affinity of B are high.

Both ionization energy of A and electron affinity of B are low.

Choose an answer

1st order

2nd order

Zero order

3rd order

Which carbonate of alkali metals is insoluble in water

Choose an answer

Na₂CO₃

K₂CO₃

Li₂CO₃

Cs₂CO₃

Which of the following statement is not related to Solvay's process of Na₂CO₃

Choose an answer

Cheap materials

Pure product

Continuous process

Harmful by-products

A suitable solvent should dissolve maximum amount of solute at its boiling point and minimum amount at :

Choose an answer

Freezing point.

Room temperature.

Boiling point.

Sea level temperature.

The filtration process is used to separate solid from

Choose an answer

Liquid

Gas

Solid

All of above

Which compound is more soluble in water?

Choose an answer

C₂H₅OH

C₅H₅OH

CH₃OCH₃

n-Hexanol

The unit rate of constan K ismole^-1 dm³S^-1for a chemical reaction, the order of reaction is :

Choose an answer

3

2

1

0

The number of de-electrons retained in Fe²⁺(At.No. of Fe = 26) ions is

Choose an answer

3

4

5

6

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