11.

The  formation of 1,2 dibromoethane from ethene and bromine is an example of :

• Substitution

• Dehydration

• Dehydrohalogenation

• Dehydrohalogenation

Select the correct answer from the choices A, B,C and D which are given:

Ammonia can be obtained by adding water to :

• Ammonium chloride

• Ammonium nitrite

• Magnesium nitride

• Magnesium nitride

Brass is an alloy of:

• Copper and tin

• Copper and zinc

• Zinc and lead

• Zinc and lead

Select the correct answer from the choices A, B, C, and D which are given:

During the electrolysis of molten lead bromide, which of the following takes place?

• Bromine is released at the cathode

• Lead is deposited at the anode

• Bromine ion gain electrons

• Bromine ion gain electrons

Select the correct answer from the choices A, B,C,and D  which is given:

The gas law which relates the volume of a gas to the number of molecules of the gas is:

• Avogadro's

• Gay lussac’s law

• Boyle’s Law

• Boyle’s Law

Select the correct answer from the choices A,B,C and D which is given.

 Dilute sulphuric acid will produce a white precipitate when added to a solution of :

• Copper nitrate

• Zinc nitrate

• Lead nitrate

• Lead nitrate

The salt which in solution gives a pale green precipitate with sodium hydroxide  solution and a white precipitate with barium chloride solution is :

• Iron (III) sulphate

• Iron (II) sulphate

• Iron (II) chloride

• Iron (II) chloride

Which of the following is not a common characteristic of an electrovalent compound?

• High melting point.

• Conducts electricity when molten.

• Consists of oppositely charged ions.

• Consists of oppositely charged ions.

With reference to the variation of properties in the periodic table, which of the following is generally true?

• Atomic size increases from left to right across a period.

• Ionization potential increases from left to right across a period.

• Electron affinity increases going down a group.

• Electron affinity increases going down a group.

Identify the following substance:

Liquid E can be dehydrated to produce ethene.