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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.

All Topics  1488

In an electrolytic cell current flows ?
A From cathode to anode in outer circuit
B From anode to cathode outside the cell
C From cathode to anode inside the cell
D both B & C
Correct Answer: From anode to cathode outside the cell
Pressure in gas discharge tube was kept________________?
A 10 torr
B 1 torr
C 0.1 torr
D 0.01 torr
Correct Answer: 1 torr
Which has maximum oxidation number ?
A N
B Cr
C S
D Mn
Correct Answer: Mn
Which one of the following explain the shape of orbitals _________________?
A Principal of quantum number
B Azimuthal quantum number
C Magnetic quantum number
D Spin quantum number
Correct Answer: Azimuthal quantum number
If electricity is passed through CuSO4 solution by using Pt electrode then which of the following possible change occurs ?
A H2 is deposited at cathode
B Colour of the solution becomes fade
C Cu is deposited at anode
D All are possible
Correct Answer: Colour of the solution becomes fade
Splitting of spectral lines when atom is subjected to magnetic field is called _______________?
A Zeemans effect
B Starks effect
C Photo electric effect
D Compton effect
Correct Answer: Zeemans effect
The relative lowering of vapour pressure is directly proportional to molality if the solution is________________?
A concentrated
B dilute
C saturated solution
D all of the above
Correct Answer: dilute
Rutherfords planet like structure was defective and unsatisfactory because_________________?
A Moving e- accelerate towards the nucleus
B Continuous spectrum
C behavior of electron remain unexplained
D all
Correct Answer: all
ppm means________________?
A parts of solute in 1000 parts of solvent
B parts of solvent in 1000 parts of solute
C parts of solute in one million parts of solution
D parts of solvent in one million parts of solute
Correct Answer: parts of solute in one million parts of solution
Which one is not true about cathode rays ?
A 9.11×10-31 Kg
B Cast shadow
C Heat up the platinum foil
D Cannot ionize
Correct Answer: Cannot ionize
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