M C Q s D r i v e

Chemistry 1488 MCQs [All-Courses]

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oost your exam preparation with our Chemistry MCQs designed for PPSC, FPSC, NTS, OTS, PTS, AJKPSC, BPSC, KPPSC, PMS, CSS, and all competitive exams.
Our content covers Basic Chemistry, Atomic Structure, Periodic Table, Chemical Reactions, Acids & Bases, Organic Chemistry, and everyday chemical concepts.

Solubility of KCIO3 gives__________________?
A continuous and falling solubility curve
B discontinuous and falling solubility curve
C continuous and rising solubility curve
D discontinuous and rising solubility curve
Correct Answer: continuous and rising solubility curve
The density of water may be__________________?
A Equal to that of ice
B Greater than that of ice
C Less than that of ice
D All are possible
Correct Answer: Greater than that of ice
Mixtures which distill over without change in composition called___________________?
A zeotropic mixture
B azeotropic mixture
C amphoteric mixture
D ideal solution
Correct Answer: zeotropic mixture
Which one is a conductor but is not malleable ?
A Iron
B Graphite
C Silver
D Platinum
Correct Answer: Graphite
The relative lowering of vapour pressure is_____________________?
A equal to the mole fraction of solvent
B equal to the mole fraction of solute
C directly proportional to the mole fraction of solute
D both B & C
Correct Answer: both B & C
Which one of the following does not show hydrogen bonding?
A Water
B Ethyl alcohol
C Phenol
D Diethyl ether
Correct Answer: Diethyl ether
In partially miscible liquids the two layers are___________________?
A saturated solutions of each liquid
B unsaturated solutions of each liquid
C normal solution of each liquid
D no layer formation takes place
Correct Answer: saturated solutions of each liquid
Which one is false for evaporation ?
A Surface phenomenon
B Continuous
C Exothermic
D Cause cooling
Correct Answer: Exothermic
Number of moles in 1 kg of solvent is called_________________?
A normality
B molarity
C molality
D mole fraction
Correct Answer: molality
When the atoms of third layer are arranged in such a way that they directly lie above the atoms of first layer then this arrangement is called_________________?
A ABAB (hexagonal)
B ABCABC (Cubic)
C Orthor hombic
D Rhombohedral
Correct Answer: ABAB (hexagonal)