How many valence electrons are in chlorine(cl) atom?
A. Chlorine has 1 valence electrons
B. Chlorine has 2 valence electrons
C. Chlorine has 7 valence electrons
D. Chlorine has 6 valence electrons (more…)
Chemistry MCQs
Chemistry MCQs by CSS MCQs
Chemistry MCQs by CSSMCQs
Here, you will find all Chemistry MCQs with their Answers. These MCQs would help you achieve good marks in ALL kinds of entry tests of FPSC, PPSC, KPPSC, SPSC, NTS, PTS, OTS, CTS, MDCAT, ECAT, ETEA, NUMS and all other entry tests preparation etc. They will also help you get better marks in any types of job or university admission tests. Our focus will be on the fundamental level of the Chemistry course. However, advance level and its main branches MCQs will also be shared with their correct answers. For other subject’s MCQs Click HERE
Intrinsic Semi-conductor is also called as__________?
A. Impure-Conductor
B. Pure-Conductor
C. Simple Conductor
D. None of these
Phosphorous contains which of the following?
A. Organisms
B. Soil and water
C. Air
D. All of above
Where ozone layer lies from the earth surface?
A. 10 to 20 km
B. 20 to 30 km
C. 30 to 40 km
D. 40 to 50 km
In physics, Sir Max Planck got noble prize in 1918 for his work on?
A. electron
B. energy quanta
C. photon
D. positron (more…)
Who discovered proton in the nucleus of an atom?
A. Chadwick
B. JJ Thomson
C. Gold Stein
D. Bohr
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