Basic Chemistry MCQs

GURU MCQs provides MCQs of Chemistry from Basic to Advance, so that you can prepare accordingly. MCQs of Chemistry section covers important topics of chemistry. Most repeated Chemistry MCQs frequently encountered in Inspector, ASI, Sub-inspector, Constable, FPSC, PPSC, ETEA, FIA, Police, Army, Navy, Airforce, IB, MOFA, ASF, LHC, Educators, and various other competitive exams, as well as government and private job assessments. Chemistry most repeated MCQs include Basic chemistry MCQs, Chemical Bond MCQs, Gases MCQs, Liquids and Solids MCQs, Hydrocarbons MCQs, Polymerization MCQs, Rates of Reactions MCQs, Transition Elements MCQs, Organic Chemistry MCQs, Electrons in Atoms MCQs, Moles and Equations MCQs, et

91. 2nd orbit is ___________ away from nucleus of H-atom as compared to 1st orbit is ?

A. 2-times
B. 3-times
C. 4-times
D. 6 times

92. The correct electronic configuration of Cu is ___________________?

A. [Ar]4s1
B. [Ar]4s2
C. [Ar]3d104s1
D. [Ar]3d94s2

93. Atomic orbits having same energy are called________________?

A. Degenerate orbitals
B. Bonding molecular orbitals
C. Anti bonding molecular orbitals
D. Half filled orbitals

94. When electrons collide with heavy metals than ___________ are produced?

A. Beta-rays
B. Alpha-rays
C. X-rays
D. Gamma-rays

95. Atom with higher atomic number produces X-rays of__________________?

A. Shorter wavelength
B. Larger wavelength
C. X-ray not produced
D. All are possible

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

A. Orbital
B. Orbit is elliptical
C. subshell
D. Electron cloud

97. Electronic configuration of K is_________________?

A. [Ar]4s2
B. [Ar]4s1
C. [Kr]5s1
D. [He]2s1

98. Milikan used ______________ in his atomizer?

A. Milk
B. Honey
C. Oil
D. Water

99. Spectrum is produced due to________________?

A. Different wavelength
B. Different colours
C. Different intensities
D. all have little contribution

100. When electron jump into orbit 1 then series obtained is___________________?

A. Lyman
B. Paschen
C. Pfund
D. Brackett

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