A given amount of gas occupies 10.0dm\(^3\) at 4atm and 273°C. The number of moles of the gas present is?[Molar volume of gas at s.t.p = 22.4dm\(^3\)]

A. 0.89 mol

B. 1.90 mol

C. 3.80 mol

D. 5.70 mol

According to Charles' law, the volume of a gas becomes zero at

A. 0°C

B. -100°C

C. -273°C

D. -373°C

A substance that is used as a ripening agent for fruits is

A. ethene

B. propane

C. methane

D. butane

The Sulphide which is insoluble in dilute hydrochloric acid is

A. FeS

B. CuS

C. ZnS

D. Na2S

What is the PH of 0.00 1 moldm\(^3\) solution of the sodium hydroxide

A. 14

B. 13

C. 12

D. 11

The type of bonding in [Cu(NH\(_3\))\(^4\)]\(^{2+}\) is

A. coordinate

B. electrovalent

C. metallic

D. covalent

Which of the following is an example of a chemical change?

A. dissolution of salt in water

B. rusting of iron

C. melting of ice

D. separating a mixture by distillation

To what temperature must a gas at 273k be heated in order to double both its volume and pressure?

A. 298K

B. 546K

C. 819K

D. 1092K

According to the Kinetic Theory an increase in temperature causes the kinetic energy of particles to

A. decrease

B. increase

C. be zero

D. remain constant

An element used in the production of matches is

A. nitrogen

B. aluminium

C. copper

D. sulphur

Which of the following gases may not be dried with concentrated sulphuric acid?

A. HCl\(_{(g)}\)

B. NH\(_3\)

C. Cl\(_2\)

D. SO\(_2\)

The Consecutive members of an alkane homologous series differ by

A. CH

B. CH\(_2\)

C. CH\(_3\)

D. C\(_n\)H\(_n\)

A correct electrochemical series can be obtained from Na, Ca, Al, Mg, Zn, Fe, Pb, H, Cu, Hg, Ag, Au by interchanging

A. Al and Mg

B. Zn and Fe

C. Zn and Pb

D. Pb and H

A basic postulate of the kinetic theory of gases is that the molecules of a gas move in straight lines between collisions. This implies that

A. collisions are perfectly elastic

B. forces of repulsion exist

C. forces of repulsion and attraction are in equilibrium

D. collisions are inelastic

On which of the following is the solubility of a gaseous substance dependent?
I. Nature of solvent
II. Nature of solute
III. Temperature
IV. Pressure

A. I, II, III and IV

B. I and II only

C. II only

D. III and IV only

Which of the following statements is correct about the periodic table?

A. Elements in the same period have the same number of valence electrons

B. The valence electrons of the elements in the same period increase progressively across the period

C. Elements in the same group have the same number of electron shells

D. The non-metallic Properties of the elements tend to decrease across each period

The periodic classification is an arrangement of the elements

A. atomic weights

B. isotopic weights

C. molecular weights

D. atomic numbers

If 1 litre of 2.2M sulphuric acid is poured into a bucket containing 10 litres of water and the resulting solution mixed thoroughly, the resulting sulphuric acid concentration will be

A. 2.2M

B. 1.1M

C. 0.2M

D. 0.11M