Question # 1

The amoutn of energy given out when an electron is added to an eatom is called.

Choose an answer

Electron affinity

Lattice energy

Ionization energy

Electronegativity

When NaOH and HCl are mixed the temperature increases. The reaction

Choose an answer

Exothermic with a negative enthalpy chagne.

Endothermic with a positive enthaly change.

Endothermic with a negatie enthalpy change

Exothermic with a positive enthealpy change

When system is at quilibrium state.

Choose an answer

The rate of the forward and reverse rections become equal

The concentrationof reatants and product becoes equal

The oposing reactions stop

The rate of the reverse reactio becomes very low

Group nuebr tells about the

Choose an answer

Number of shells

Number of valence electrons

Both a and b

None of these

A bond formed by the mutual sharing an electron pair is called.

Choose an answer

Ionic bond

Metallic bond

Covalent bond

Coordinate covalent bond

Empirical formula of Benzene is.

Choose an answer

CH2O

CH

C2H

CH2

Which of the following does not happpen, when a system is at equilibrium state.

Choose an answer

Reaction continues to occur in both the directions

Concentration of reactants and products stop changig

Forward and reverse reactions stop

Forward and reverse rates become equal

Metals are teh elements which have.

Choose an answer

Electronegative character

Electropositive character

Both a and b

None of the above

Buckyballs also knowns as.

Choose an answer

Fullerenes

Graphite

Both a and b

None of these

Water has high boiling point as compared a alcohol due to

Choose an answer

Low density

High surface tension

Hydrogen bonding

High vapour pressure

Which state of matter has fixed shape and volume?

Choose an answer

Liquid

Solid

Gas

All of these

Attaining two electrons in the valence shell is called.

Choose an answer

Octet rule

Duplet rule

Triplet rule

All of these

The branch of chemistry that helps to treat dseases and synthesize new medicines.

Choose an answer

Physical Chemistry

Environmental Chemistry

Organic chemistry

Inorganic chemistry

More Classes

Other Links

Chemistry 9th Class English Medium Online Test 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