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	Which one of the following species is not an electrophile.	HN3 Br H+ BF3
2	In unimolecular reactions, the reaction completes in	<sub>One step</sub> Two steps Three steps None of these
3	Which one of the following species is a nucleophile	CH3 (CH3)2 C BF3 OH-
4	SN2 mechanism involves	1st order kinetic 2nd order kinetic 3rd order kinetic Zero order kinetic
5	SN1 reaction usually occurs in	Primary alkyl halides Secondary alkyl halides Tertiary alkyl halides All of these
6	Nucleophilic substitution reactions, which are completed in two steps are called as.	SN1 SN2 E1 E2
7	Which products is not formed when ethyl alcohol reacts with SOCl2 in the presence of pyridine.	Ethyl chloride Hydrogen chloride Sulphur di oxide Sulphur tri oxide
8	In which process, alkyl halide is not produced.	Reaction of alcohol with halogen acid Reaction of Grignard reagent with water Reaction of alcohol with phosphorous pentachloride Action of alkene on halogen acid
9	Which substance is used to convert alcohol to alkyl halide.	SOCl2 PCl3 HCl +ZnCl2 All of these
10	The reacts with halogen acids to form alkyl halide the process is known as.	Halogenation Hydrohalogenation Hydrogenation Dehydrohalogenation
11	Secondary alkyl halides are those in which halogen atom is attached with a carbon atom which is further attached to.	One beta carbon Two beta carbon Three beta carbon Four beta carbon
12	Which one of the following is not a nucleophile.	H2O H2S BF3 NH3
13	For which mechanisms, the first step involved is the same.	E2 and E2 E2 and SN2 SN1 and E2 E1 and SN1
14	Elimination biomolecular reactions involve.	First order kinetics Second order kinetics third order kinetics Zero order kinetics
15	SN2 reactions can be best carried out with	Primary alkyl halides Secondary alkyl halides Tertiary alkyl halides All the three
16	Grignard reagent is reactive due to	The presence of halogen atom The presence of Mg atom The polarity of C -Mg bond None of the above
17	When CO2 is made to react with ethyl magnesium iodide, followed by acid hydrolysis, the product formed is.	Propane Propanoic acid Propanal Propanol

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