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Question-1
The oxidation number of chlorine in CaCl
2.
(A)
+1
(B)
-1
(C)
-2
(D)
+2
Question-2
The element which is in solid state is:
(A)
Bromine
(B)
Fluorine
(C)
Iodine
(D)
Chlorine
Question-3
A germicide used to kill bacteria in drinking water and swimming pools is:
(A)
Bromine
(B)
Iodine
(C)
Fluorine
(D)
Chlorine
Question-4
Chlorine acid is:
(A)
HCl
(B)
HClO
(C)
HClO
2
(D)
HO
2
Cl
Question-5
The oxidation number of chlorine in Cl
2
:
(A)
2
(B)
1
(C)
0
(D)
3
Question-6
The organic solvent used to colour halogens.
(A)
CFCs
(B)
Dichloro methane
(C)
Cyclohexane
(D)
Methane
Question-7
The chemical formula of sodium chlorate.
(A)
NaCl
2
(B)
NaClO
(C)
NaO
2
Cl
(D)
NaCl
Question-8
The number of outer shell electrons in halogens are:
(A)
7
(B)
8
(C)
1
(D)
3
Question-9
The halogen which cause thyroid problem.
(A)
Bromine
(B)
Fluorine
(C)
Chlorine
(D)
Iodine
Question-10
The compound used to dissolve fats and oils is:
(A)
Dichloromethane
(B)
Chloro methane
(C)
Trichloro methane
(D)
Chloroform
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Cambridge Advanced Grade 12
IGCSE
Practice in Related Chapters
Planet Earth
Atomic Structure
Group VII Elements and their Compounds
Halogenoalkanes
Basic Concepts in Organic Chemistry
Alcohols
Hydrocarbons: Alkenes
Hydrocarbons: Fuels
Reaction Rates
Enthalpy Changes
Equilibria
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