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.

Milikan used ______________ in his atomizer?

A Milk
B Honey
C Oil
D Water
Correct Answer: Oil

List of elements based on hydrogen scale is called________________?

A periodic table
B groups
C periods
D electrochemical series
Correct Answer: electrochemical series

Electronic configuration of K is_________________?

A [Ar]4s2
B [Ar]4s1
C [Kr]5s1
D [He]2s1
Correct Answer: [Ar]4s1

Chemical used in salt bridge is________________?

A KOH
B KCI
C KNO3
D KBr
Correct Answer: KCI

Space around nucleus where finding probability of electrons is maximum is called ____________________?

A Orbital
B Orbit is elliptical
C subshell
D Electron cloud
Correct Answer: Orbital

H2 gas in SHE is filled at pressure of___________________?

A 760mm of Hg
B 750mm of Hg
C 780mm of Hg
D 800mm of Hg
Correct Answer: 760mm of Hg

Atom with higher atomic number produces X-rays of__________________?

A Shorter wavelength
B Larger wavelength
C X-ray not produced
D All are possible
Correct Answer: Shorter wavelength

Voltaic cell can be recharged by______________?

A by addition of fresh solution
B by replacing external circuit with external source of electricity
C by removal of solution
D by heating it
Correct Answer: by replacing external circuit with external source of electricity

When electrons collide with heavy metals than ___________ are produced?

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

Zn(s)/Zn+2(aq) 1M | | Cu+2(aq) 1M/Cu(s) is representation of reaction in______________?

A Daniel cell
B Downs cell
C Voltaic cell
D Nelsons cell
Correct Answer: Voltaic cell