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

81. When an atom absorbs energy the lines in the spectrum will appear which are_________________?

A. Brighter
B. Darker
C. Colourless
D. Hard to locate

82. 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

83. 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

84. 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

85. 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

86. Pressure in gas discharge tube was kept________________?

A. 10 torr
B. 1 torr
C. 0.1 torr
D. 0.01 torr

87. Angle of deflection was studied by________________?

A. Hitorff
B. Stoney
C. William Crookes
D. J.Perrin

88. Positive rays give flash on________________?

A. AgNO3 plate
B. AgCl plate
C. ZnO
D. ZnS

89. The value of e/m ratio of electron is________________?

A. 6.02 x 1023 C/kg
B. 1.7588 x 1020 C/kg
C. 9.1095 x 10-31 C/kg
D. 1.7588 x 1011 C/kg

90. Planks theory says energy is emitted__________________?

A. In continuous manner
B. Discontinuous manner
C. Simultaneously
D. In the form of heat

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