The empirical formula of a hydrocarbon containing 0.12 mole of carbon 0.3 mole of hydrogen is

A. CH₂

B. CH₃

C. C₂H₂

D. C₂H₄

E. C₂H₆

The reaction of an alkanol with alkanioc acid is known as

A. dehydration

B. esterification

C. halogenation

D. hydrogenation

E. saponification

The rate of a reaction usually increases with increase in the concentration of reactants because the

A. distance between particles of the reactants increases

B. frequency of collision of particles is lower

C. particles of the reactants gain energy and move faster

D. reactants from a complex which decomposes rapidly

E. reactants occupy a higher energy level

Which of the following compounds will undergo thermal dissociation?

A. AgCl

B. CaCO₃

C. K₂S0₄

D. NaOH

E. NH₄CI

Which of the following gases will bleach moist litmus paper?

A. Cl₂

B. CO₂

C. HCl

D. N₂O

E. SO₃

What kind of bond exist between carbon and oxygen in C0₃ ^2-?

A. Co- ordinate Covalent

B. covalent

C. Electrovalent

D. Metallic

E. Van der Waal forces

Which of these compounds has the greatest ionic character?

A. AlF₃

B. BF₂

C. CF₄

D. CsF

E. NaF

\( ^{235}_{92}U + ^1_0n → ^{145}_{56}Ba + ^{88}_{36}Kr + 3^1_0n + Energy \)

The equation above represent a/an

A. alpha particle emission

B. endothermic reaction

C. nuclear fission

D. nuclear fusion

E. thermal dissociation

A neon atom is chemically nonreactive because

A. the electrons at the outermost shell is partially filled

B. the number of protons equals the number of electrons

C. the outer electron shell is completely filled

D. there are equal number of protons and neutrons in its nucleus

E. there are no elections at the outermost shell

In the electrolysis of dilute tetraoxosulphate (VI) acid using platinum electrodes, the products obtained at the anode are cathode respectively are

A. hydrogen, oxygen

B. Hydrogen, tetraoxosulphate (VI) ion

C. oxygen, hydrogen

D. sulphur, hydrogen

E. sulphur, oxygen