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 The substance formed due to the reaction is

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

Question-2
"Equal volumes of all gases contain equal number of atoms under similar conditions of temperature and pressure" This was proposed by

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

Question-3
Avogadro Number is

(A) 6.02 atoms	(B) 6.023 x 10²³atoms
(C) 6.023 x 10²⁴atoms	(D) 6.023 x 10²²atoms

Question-4
Burning of a chemical substance in presence of oxygen is

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

Question-5 When CaCO₃ is heated, the gas liberated is

(A) CO₂	(B)O₂
(C)H₂	(D)N₂

Question-6
The catalyst used in the decomposition of potassium chlorate

(A) MnO₃	(B) Mn
(C) O₂	(D) MnO₂

Question-7
The reactions in which heat is absorbed is

(A) exothermic	(B) endothermic
(C) displacement	(D) combination

Question-8
A substance decompose into simpler substance by the passage of electric current is

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

Question-9
One mole of gas occupies a volume of

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

Question-10
The symbolic representation of actual number of atoms present in a molecule is called

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

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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