NMDCAT Chem Quiz : Chemistry of Hydrocarbons
NMDCAT Chemistry Quiz: Hydrocarbons
Welcome to the NMDCAT Chemistry Quiz focusing on the Chemistry of Hydrocarbons! This quiz contains 35 multiple-choice questions designed to test your knowledge and understanding of hydrocarbons, ranging from alkenes to aromatic hydrocarbons.
Participate in this quiz to:
- Assess your knowledge of organic chemistry.
- Prepare for NMDCAT or other competitive exams.
- Enhance your understanding of hydrocarbons and their properties.
1. What is the old name of alkenes? A. Olefins B. Paraffin C. Acetylene D. None of the above
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B
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D
2. Which compound is used for making perfumes and dyes? A. Ethyl B. Ethyl acetate C. Ethanoate D. Ethanone
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D
3. In water alkanes are .......... ? A. Soluble B. Insoluble C. Bitter in taste D. Sweet in taste
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4. In which hydrocarbon all the four valencies of carbon are linked together with single bond? A. Alkanes B. Alkenes C. Alkynes D. None of the above
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5. Aromatic hydrocarbons are also known as ........... ? A. Acetaldehyde B. Butyne C. Arenes D. Arines
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6. Name an organic compound in which RCOOCOR is a functional group? A. Ester B. Acid anhydride C. Dimethyl ether D. Aliphatic hydrocarbon
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7. Name an open chain hydrocarbon which is odourless? A. Aldehydes B. Aromatic C. Aliphatic D. Acetate
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8. Name a hydrocarbon which is a main component of natural gas? A. Methyl B. Methane C. Ethyl D. Methanol
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9. Why alkanes are known as saturated hydrocarbon? A. It consists of triple bond. B. It consists of double bond. C. It consists of single bond. D. None of the above
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10. What is the general formula of alkenes? A. CnH2n B. CnH2n-2 C. CnH2n+2 D. CnH2n+OH
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11. Which of the following compounds react most readily with Br(g)? (a) C2H2 (b) C3H6 (c) C2H4 (d) C4H10
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12. When propene reacts with HBr in the presence of peroxide, it gives rise to (a) allyl bromide (b) isopropyl bromide (c) n-propyl bromide (d) 3-bromopropane
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13. Find the alkene with maximum stability (a) cis-2-Butene (b) trans-2-Butene (c) 1-Butene (d) All have the same stability
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14. Ethylene bromide on treatment with Zn gives (a) Alkyne (b) Alkene (c) Alkane (d) All of the above
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15. Which of the following reactions is common in alkenes? (a) Addition (b) Elimination (c) Substitution (d) Superposition
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16. Cis-trans isomerism in alkenes is due to (a) chiral carbon (b) free rotation about single bond (c) free rotation about the double bond (d) restricted rotation about the double bond
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17. Baeyer’s reagent is used to detect (a) glucose (b) double bonds (c) oxidation (d) reduction
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18. Which of the following will form 2 acetaldehyde molecules on ozonolysis? (a) 1-pentene (b) 2-pentene (c) 1-butene (d) 2-butene
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D
19. Which of the following reagents will form 1-propanol from propene? (a) B2H6, H2O2, OH– (b) Aq. KOH (c) H2O, H2SO4 (d) Hg(OAc)2, NaBH4/H2O
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D
20. Geometrical isomerism is exhibited by (a) 2-Butene (b) 2-Butyne (c) 2-Butenol (d) Butanol
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21___________ is the phenomenon in which more than one compounds have the same chemical formula but different chemical structures. A. Hydrocarbons B. Chlorination C. Isomerism D. Alkanes
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22-Chemical compounds that have identical chemical formulae but differ in properties and the arrangement of atoms in the molecule are called? A. Isomers B. Meromers C. Bisomers D. Psomers
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23-How many primary types of isomerism there? A. 1 B. 2 C. 3 D. 4
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24-Which isomerism commonly referred to as constitutional isomerism? A. Functional Isomerism B. Chain Isomerism C. Stereoisomerism D. Structural Isomerism
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25-Chain Isomerism is also known as skeletal isomerism? A. TRUE B. FALSE C. Can be true or false D. Can not say
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26-Which of the following is an example of functional isomerism? A. C3H7Cl B. CH3OC3H7 C. C3H6O D. C2H5OC2H5
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27-Choose the incorrect option regarding Isomerism. A. They differ in both physical and chemical properties B. They have the different molecular formula C. There are two types of Isomerism : Structural and Stereo Isomerism D. Geometric and optical isomerism are two types of Stereo Isomerism
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28-Which among the following does not exhibit geometric isomerism? A. 4-hexene B. 3-hexene C. 2-hexene D. 1-hexene
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29-The molecular formula C5H12 contains how many isomeric alkanes? A. 2 B. 3 C. 4 D. 5
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30-Geometric Isomerism is popularly known as cis-trans isomerism. A. Yes B. No C. Can be Yes Or No D. Can not say
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31-What principle accounts for the observed regioselectivity of radical bromination that is not observed for radical chlorination of alkenes? A-Lechatlier’s Principle B-Avagadro’s Lab C-Hammond’s Postulate D-Markovnikov Rule
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32-Which product can NOT be prepared in high yield by radical halogenation of alkanes? A-Iodoethane B-2-Bromo-2-methylheptane C-Chlorocyclopentane D-2-Bromo-2,4,4,trimethylpentane
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33. Ethyne and Ethane can be separated from a mixture by passing it through (a) Pyrogallol (b) Charcoal powder (c) Concentrated H2SO4 (d) Ammonical Cu2Cl2
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34. 1-butyne and 2-butyne can be identified by using which of the following reagents? (a) O2 (b) Br2 (c) NaNH2 (d) HCl
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35. In the ozonolysis reaction, acetylene forms (a) Formaldehyde (b) Glycol (c) Glyoxal, formic acid (d) None of the above
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