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Quiz 33
Mdcat-past-papers - ETEA Quiz
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Board: ETEA |
641. All of the following compounds are organic except:
KOCN
C₆H₅OH
CH₃COCH₃
CH₃OH
642. Name of ketone functional group is:
Amino
Carbonyl
Carboxyl
Formyl
643. Pyridine belongs to which class of organic compounds?
Alicyclic
Homocyclic
Heterocyclic
Hydrocarbon
644. Which of the following elements cannot be detected directly in a given organic compound?
Chlorine
Oxygen
Nitrogen
Phosphorus
645. The isomers of a substance must have:
Same molecular mass
Same chemical properties
Same structural formula
Same functional group
646. The structural isomerism in which isomers are in dynamic equilibrium with each other is:
Chain isomerism
Position isomerism
Metamerism
Tautomerism
647. Enantiomers are examples of:
Cis isomers
Trans isomers
Optical isomers
Geometric isomers
648. The tautomer of propanol is:
Propanal
Propanone
Methyl ethyl ether
Butanone
649. Select the correct IUPAC name among the following:
2-Bromo-4-Chloro-3-iodopentane
4-Bromo-2-chloro-3-iodopentane
4-Bromo-2-iodo-3-chloropentane
2-Bromo-4-iodo-3-chloropentane
650. Which of the following prefixes is used when two methyl groups are attached with the second last carbon of an alkane chain?
n-
iso-
neo-
geminal
651. What is the composition of the alloy German silver?
Cu + Zn + Ni
Cu + Ag + Ni
Cu + Sn + Zn + Pb
Al + Cu + Mg + Mn
652. The final substitution product in chlorination of methane (with UV light & excess Cl₂) is:
Methylene chloride
Carbon tetrachloride
Methylene dichloride
Chloroform
653. The homolytic fission of a C–H bond in an alkane results in:
Alkyl free radical
Carbocation
Carbanion
Methyl free radical
654. Addition of HBr to isobutylene mainly gives:
Isobutyl bromide
Sec-butyl bromide
n-butyl bromide
tert-butyl bromide
655. Dehydrohalogenation of alkylhalide is carried out in presence of :
Alcoholic KOH
Concentrated H2SO4
Aqueous KOH
Zn Dust
656. Propyne reacts with aqueous sulfuric acid in the presence of HgSO₄ to form:
Acetone
1-Propanol
2-Propanol
Acetaldehyde
657. In the following molecules, which one has the shortest C–C bond length?
C₂H₆
C₂H₄
C₆H
C₂H₂
658. Which method is generally used to prepare alkynes?
Dehydrohalogenation of vicinal dihalides
Hydrolysis
Hydrogenation of alkene
Hydration of alkene
659. The electrophile considered as the active agent in the nitration of benzene is:
NO₂⁺
NO₂⁻
NOH
NHO₂
660. What will be the product when phenol reacts with concentrated HNO₃?
Picric acid
Para-nitrophenol
Ortho-nitrophenol
All of the above
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