(A) Bromine
(B) Chlorine
(C) Salt
(D) Sodium sulphate
Tag: Chemistry mcqs
The periodic arrangement was the result of?
(A) Rutherford
(B) Bohr
(C) Mendeleev
(D) None of the above
__ is the reaction in which two or more substances combine together to form a single substance.
(A) Combination
(B) Combustion
(C) Addition
(D) Subtraction
A reaction in which a substance burns in oxygen to produce heat and flame is called?
(A) Combustion
(B) Decombustion
(C) Decomposition
(D) None of the above
__ is the short hand method to describing a chemical reaction.
(A) Radical Equation
(B) Chemical Equation
(C) Chemical Reaction
(D) None of the above
A reaction in which a chemical substance breaks down to form two or more simple substances is called?
(A) Combination reaction
(B) Decomposition reaction
(C) Combustion reaction
(D) Single replacement reaction
A change which alters the composition of a substance is called?
(A) Physical change
(B) Chemical change
(C) Chemical reaction
(D) None of the above
18 grams of H2O contains __ molecules.
(A) 6.02×1020
(B) 6.05×1023
(C) 6.05×1020
(D) 6.02×1023