Chemistry 12 mcqs with answers pdf chapter 8 aliphatic hydrocarbons. These are most important mcqs of chemistry 12 for the preparation of F.Sc board exam and MDCAT.
IMPORTANCE OF THESE MCQS
It is tough and difficult task to solve 2nd year chemistry mcqs . Students
must have proper preparation of 2nd year chemistry mcqs for excellent
marks in chemistry 12. All the important mcqs related to chapter 8 Aliphatic hydrocarbons of 2nd
year Chemistry are here for you. These questions are taken from past
papers of 2nd year chemistry of all Punjab Board of Pakistan as ;
Bahawalpur Board
D.G.Khan Board
Faisalabad Board
Gujranwala Board
Lahore Board
Multan Board
Rawalpindi Board
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These questions (MCQs) are top repetitive in previous papers. Each
question has a detailed answer explanation. In this way you learn from
your mistakes
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Questions are based on the current Chemistry Class 12 syllabus according
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About This Chapter
Chapter no. 8 "Aliphatic hydrocarbons" of Chemistry 12 enables the students to know how to name the aliphatic hydrocarbons according to IUPAC rules. Students learn synthesis of alkanes, alkenes and alkynes and their important reactions. Students learn the comparison of reactivity of sigma bond and pi bond. Students learn about radical nature of reactions of alkanes and electrophilic addition of alkenes and alkynes. Students also learn the comparison of reactivities of alkanes, alkenes and alkynes. This "Chemistry 12 mcqs with answers pdf chapter 8 " covers all important mcqs that are top repetitive
in past papers relevant to above mentioned topics.
👉For Answers of following questions click the show answer button.
1. The presence of a double bond in compound is a sign of:
(A) Saturation
(B) Unsaturation
(C) Substitution
(D) None of these
(B) Unsaturation
2. Formula of chlroform is :
(A) CH3Cl
(B) CCl4
(C) CH2Cl2
(D) CHCl3
(D) CHCl3
3. Preparation of vegetable ghee involves:
(A) Hydroxylation
(B) Hydrogenation
(C) Halogenation
(D) Dehydrogenation
(B) Hydrogenation
4. The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with:
(A) Hund's Rule
(B) Markownikov's Rule
(C) Pauli's Exclusion Principle
(D) Aufbau Principle
(B) Markownikov's Rule
5. Which compound is the most reactive?
(A) Benzene
(B) Ethane
(C) Ethyne
(D) Ethene
(D) Ethene
6. Vinyl acetylene react with HCl to form:
(A) Chloroprene
(B) Benzene
(C) Polyacetate
(D) Divinyl acetate
(A) Chloroprene
7. Synthetic rubber is made by polymerization of :
(A) Chloroprene
(B) Benzene
(C) Polyacetate
(D) Divinyl acetate
(A) Chloroprene
8. Which gas is used in artificial ripening of fruits?
(A) Ethyne
(B) Ethene
(C) Ethane
(D) Propane
(B) Ethene
9. β-β’-dichloroethylsulphide is commonly known as:
(A) Mustard Gas
(B) Laughing Gas
(C) Phosphene Gas
(D) Bio-gas
(A) Mustard Gas
10. Marsh gas is :
(A) Ethene
(B) Methane
(C) Acetylene
(D) Butane
(B) Methane
11. The characteristic reaction of unsaturated hydrocarbons is:
(A) Isomerism
(B) Addition
(C) Oxidation
(D) Reduction
(B) Addition
12. Which of the following is a poisonous gas?
(A) Mustard gas
(B) Phosphene
(C) Lewisite
(D) All of above
(D) All of above
13. Bayer's reagent is used in laboratory for:
(A) Reduction
(B) Oxidation
(C) Detection of unsaturation
(D) None of these
(C) Detection of unsaturation
14. Polymerization of acetylene forms:
(A) Propane
(B) Butane
(C) Benzene
(D) Butane
(C) Benzene
15. General formula of Alkane is:
(A) CnH2n
(B) CnH2n+2
(C) CnH2n+1
(D) CnH2n-1
(B) CnH2n+2
16. General formula of Alkene is:
(A) CnH2n
(B) CnH2n+2
(C) CnH2n+1
(D) CnH2n-1
(A) CnH2n
17. General formula of Alkyne is:
(A) CnH2n
(B) CnH2n+2
(C) CnH2n+1
(D) CnH2n-2
(D) CnH2n-2
18. General formula of Alkyl group is:
(A) CnH2n
(B) CnH2n+2
(C) CnH2n+1
(D) CnH2n-2
(C) CnH2n+1
19. Which of the following is a Bayer's reagent?
(A) Aqueous Br2 Water
(B) Neutral Permanganate
(C) Acidic KMnO4
(D) Alkaline KMnO4
(D) Alkaline KMnO4
20. Select the compound which acidic Hydrogen?
(A) Acetylene
(B) Methane
(C) Ethylene
(D) Butadiene
(A) Acetylene
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