The formation of 1,2 dibromoethane from ethene and bromine is an example of :
Substitution
Dehydration
Dehydrohalogenation
Dehydrohalogenation
D.
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
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.
