12th Class FSc Part 2 Chemistry Chapter Wise Online MCQ Test With Answer PDF

Chemistry Fsc Part 2 Online Test

Sr. #	Questions	Answers Choice
1	Structure of benzene is	Tetrahedral Trigonal planar Hexagonal planar Linear
2	Benzene molecule is made up of.	3- pi and 9 sigma bonds 6- pi and 6 sigma bonds 6 -pi and 12 sigma bonds 4 -pi and 12 sigma bonds
3	Cyclic structure of benzene was proposed by	Dewar Faraday Down Kekule
4	Effect of substituent on benzene ring is due to	Resonance Inductive effect Both a and b Neither a nor b
5	Biphenyl is	Monocyclic aromatic compound Polyclic aromatic compound Polycyclic fused ring compound Alicyclic compound
6	The number of possible isomers of xylene are	2 3 4 5
7	The conversation of n-hexane into benzene by heating in in the presence of Pt is called	Isomerization Aromatization Dealkylation Rearrangement
8	Aromatic compounds burns with sooty flame because.	They have high percentage of hydrogen The have a right structure The have high percentage of carbon The resist reaction with air
9	Which compound is the more reactive	Benzene Ethene Ethane Ethyne
10	Among the following the compound that can be most readily suphonted is.	Toluene Benzene Nitrobenzene Chlorobenzene
11	Benzene can not undergo.	Substitution reactions Addition reactions Oxidation reactions Elimination reactions
12	Aromatic hydro carbon are the derivatives of	Normal series of paraffins Alkene Benzene Cyclohexane
13	The benzene molecule contains.	Three double bonds Two double bonds One double bonds Delocalized sigma electron charge
14	Which alkyne reacts with water and form aldehyde	Ethyne Propyne 1- Butyne 2- Butyne
15	Ethyne on oxidation with strong alkaline KMnO4 changes to	Ethyl alcohol Acetaldehyde Vinyl alcohol Glyoxal
16	Which has reddish brown colour.	silver acetylide Copper acetylide BaSO4 Aqueous KMnO4 solution
17	The number of acidic hydrogen present in 1- Propyne is	1 2 3 4

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