Andhra Pradesh (English Medium) Std 9 Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
One mole of gas occupies a volume of

(A) 22 litres	(B) 44 litres
(C) 22.4 litres	(D) 22.4 kilo litres

Question-2
A substance decompose into simpler substance by the passage of electric current is

(A) reduction	(B) oxidation
(C) electrolysis	(D) redox reaction

Question-3
Burning of a chemical substance in presence of oxygen is

(A) displacement	(B) reduction
(C) combustion	(D) redox reaction

Question-4
The shorthand representation of a chemical change or reaction in terms of symbols and formulae is

(A) Symbol	(B) Reaction
(C) Equation	(D) Subscript

Question-5
Law of combining volumes was proposed by

(A) Avogadro	(B) Einstein
(C) Gaylussac	(D) Berzelius

Question-6
The reactions which take place only with the absorption of electrical energy are called

(A) electrochemical reactions	(B) chemical combination
(C) redox reaction	(D) ionization reaction

Question-7
A chemical equation in which number of atoms of each element is same on both the sides of a chemical reaction is

(A) balanced equation	(B) chemical formula
(C) symbol	(D) equation

Question-8 The substance formed due to the reaction is

(A) reactant	(B)product
(C)solvent	(D)precipitate

Question-9
"Under the same conditions of temperature and pressure, equal volumes of all gases contain equal number of molecules" This is

(A) Avogadro's hypothesis	(B) Berzelius hypothesis
(C) Gaylussac's	(D) Dalton's atomic theory

Question-10
When electric current is passed through acidified water, it decomposes to

(A) H₂ & O₂	(B) Cl₂ and O₂
(C) H₂ and Cl₂	(D) N₂ and H₂

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Std 9

Andhra Pradesh (English Medium)

Practice in Related Chapters
Chemical Bonding
Behaviour of Gases
Atomic Structure
Metallurgy
Rates of Reactions
Chemical Calculation
Energetics