9th Class Chemistry English Medium Online Test For Full Book With Answers

9th Class Chemistry English Medium Online Test For Full Book

Sr. # Questions Answers Choice
1 Coal is the mixture of Hydrogen Methane Carbon monoxide All
2 The strong heating of coal in the absence of air is called. Carbonization Destructive distillation Fractional distillation All
3 The % age of carbon is bituminous is 60 70 80 90
4 The % age of carbon is lignite is 60 70 80 90
5 The % age of carbon in peat is : 60% 70% 80% 90%
6 The % age of carbon is coal is 40-60 50-70 40-80 40-90
7 Conversion of wood into coal is called. Carbonization Destructive distillation Fractional distillation All
8 Coal is blackish complex mixture of compounds of Carbon Hydrogen oxygen All
9 Which one contains triple covalent bond? Pentane Ethylene Acetylene All
10 Which one contains double covalent bound? Pentane Ethylene Acetylene All
11 Silicon occurs in the form of None of these both a and b Silicates Silica
12 Which one is heterocyclic compound? Benzene Cyclobutane Thiophene Nephthalene
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