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.

Rutherford bombarded _________________ particles in discovery of nucleus?

A Gamma-rays
B Alpha-rays
C Beta-rays
D X-rays
Correct Answer: Alpha-rays

Decrease in oxidation number is called__________________?

A oxidation
B reduction
C oxidation-reduction
D all of above represent same entity
Correct Answer: reduction

Charge of electron was measured by__________________?

A J.J Thomson
B Millikan
C Rutherford
D Perrin
Correct Answer: Millikan

Reaction at anode is called________________?

A oxidation
B reduction
C redox
D decomposition
Correct Answer: oxidation

Free neutron changes into proton with the emission of__________________?

A Neutrino
B Electron
C Both A & B
D Meson
Correct Answer: Both A & B

In electrolytic solution conductance of electricity is due to _____________________?

A free electrons
B ions
C metals
D electrodes
Correct Answer: ions

Increase in atomic number is observed during_________________?

A Alpha emission
B Beta emission
C Both A & B
D Radioactivity
Correct Answer: Beta emission

The number of fundamental particles in an atom of the lightest isotope carbon are_______________?

A 6
B 12
C 18
D 20
Correct Answer: 18

Which of the following is true in the case of Zn-Cu cell ?

A The flow of electrons takes place from copper to zinc
B E0red of copper electrode is less than that of zinc electrode
C Zinc acts as an anode and copper as cathode
D All are correct
Correct Answer: Zinc acts as an anode and copper as cathode

Atom cannot be divided into simple unitstheorized by________________?

A Rutherford
B Dalton
C Bohr
D Schrodinger
Correct Answer: Dalton