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
Burning of a chemical substance in presence of oxygen is

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

Question-4
The substance that take part in chemical reaction is called

(A) reactant	(B) product
(C) species	(D) non-solvent

Question-5
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

Question-6
The basis for Avogadro hypothesis is made by

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

Question-7
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-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
"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
Atomic theory was proposed by

(A) John Dalton	(B) Avogadro
(C) Berzelius	(D) Einstein

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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