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	----------- compound shows extensive hydrogen bonding with water	C<sub>2</sub>H<sub>6</sub> H<sub>2</sub>S C<sub>2</sub>H<sub>5</sub>OH CH<sub>3</sub>Cl
2	Rectified spirit contains alcohol about	80% 85% 90% 95%
3	Methyl alcohol is not used	As a solvent As an anti freezing agent As a substitute for petrol For denaturing of ethyl alcohol
4	Alcohol obtained by fermentation is only upto	10% 12% 20% 95%
5	Which compound will have the maximum repulsion with water	C<sub>6</sub>H<sub>6</sub> C<sub>2</sub>H<sub>5</sub>OH C<sub>3</sub>H<sub>7</sub>OH CH<sub>3</sub>OCH<sub>3</sub>
6	Which compound shows maximum hydrogen bonding with water	CH<sub>3</sub>OH C<sub>2</sub>H<sub>5</sub>OH CH<sub>3</sub>- O - CH<sub>3</sub> C<sub>6</sub>H<sub>5</sub>OH
7	In t-butyl alcohol, the tertiary carbon is bonded	Three hydrogen atoms Two hydrogen atoms One hydrogen atom No hydrogen atom
8	Which compound is called universal solvent	CH<sub>3</sub>OH C<sub>2</sub>H<sub>5</sub>OH CH<sub>3</sub>O CH<sub>3</sub> H<sub>2</sub>O
9	Alkyl halides are considered to be very reactive compounds towards nucleophile because	They have an electrophilic carbon They have an electrophilic carbon and a good leaving group They have an electrophilic carbon and a bed leaving group They have a nucleophilic carbon and a good leaving group
10	For which mechanisms, the first step involved is the same	E<sub>1</sub>and E<sub>2</sub> E<sub>2</sub>and SN<sub>2</sub> E<sub>1</sub>and E<sub>2</sub> E<sub>1</sub>and SN<sub>1</sub>
11	SN₂reactions can be best carried out with	primary alkyl halides secondary alkyl halides tertiary alkyl halides All the three
12	Grignard's 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
13	When CO₂is made to react with ethyl magnesium iodide, followed by acid hydrolysis, the product formed is	propane propanoic acid propanal propanol
14	The reactivity order of alkyl halides for a particular alkyl group is	Fluoride > Chloride > Bromide > iodide Chloride > Bromide > Fluoride > iodide Bromide > iodide > chloride > Fluoride Iodide > Bromide > Chloride > Fluoride
15	Which compound is formed, when CH₃OH reach with CH₃- Mg -Br	Ethane Methane Ethanol Acetone
16	The reactivity of Grignard's regent is due to	Polarity of Mg-x bond Polarity of C-Mg bond Electro negativity of halogen atom Presence of Mg-atom
17	When CO₂is made to react with ethyl-magnesium iodide followed by acid hydrolysis, the product formed is	Propane Propanoic acid Propanal Propanol

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