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Quiz 203
Mdcat-past-papers Quiz
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4041. What is the IUPAC name of chloroform?
Chloromethane
Dichloromethane
Trichloromethane
Tetrachloromethane
4042. If both double and triple bonds are present then the ending given to the root is:
#NAME?
–yne
#NAME?
–ane
4043. 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
4044. 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
4045. The following has correct IUPAC name:
2,3-tetramethylpentane
2,2,3,3-tetramethylpentane
3,3,4,4-tetramethylpentane
3,4-bis(dimethylbutane)
4046. Generic formula of cycloalkane is:
CₙH₂ₙ₊₂
CₙH₂ₙ
CₙH₂ₙ₋₁
CₙH₂ₙ₋₂
4047. Neo-pentyl halide is:
Tertiary alkyl halide
Secondary alkyl halide
Primary alkyl halide
None of the above
4048. The skeletal formula of an organic compound is given. It is a hydrocarbon. IUPAC name of the compound is:
3,3-Dimethyl-3-hexene
3,4-Dimethyl-3-hexene
3-Hexene
2,3-Dimethyl-1-hexene
4049. Order of reactivity of alkene with hydrogen halide is:
HBr > HI > HCl
HI > HBr > HF
HF > HI > HCl
HI > HBr > HCl
4050. Reaction mechanism of alkane with halogen is known as:
Propagation
Free radical substitution
Addition
Elimination
4051. CFCs are organic compounds, derivates of saturated hydrocarbons, they are inert and non-toxic due to high bond dissociation energy. CFCs stands for:
Chlorofluorocarbons
Chlorofluorochlorine
Chlorofluorocarbides
Chlorochlorofluorine
4052. In chlorination of methane, the attack of chlorine free radical on methane to form methyl radical occurs in:
Initiation step
Propagation step
Termination step
Last step
4053. Generic formula of cycloalkane is:
CₙH₂ₙ₊₂
CₙH₂ₙ₊₁
CₙH₂ₙ
CₙH₂ₙ₋₂
4054. 2-Chloropropane is heated with Na metal to form 2,3-dimethylbutane. The reaction is:
Wurtz reaction
Dehydrohalogenation
Catalytic hydrogenation
Fall
4055. Catalytic hydrogenation of oil gives:
Alkene
Fat
Alkyne
Alkyl halide
4056. What is the composition of the alloy German silver?
Cu + Zn + Ni
Cu + Ag + Ni
Cu + Sn + Zn + Pb
Al + Cu + Mg + Mn
4057. The final substitution product in chlorination of methane (with UV light & excess Cl₂) is:
Methylene chloride
Carbon tetrachloride
Methylene dichloride
Chloroform
4058. The homolytic fission of a C–H bond in an alkane results in:
Alkyl free radical
Carbocation
Carbanion
Methyl free radical
4059. Ethene on polymerization gives the product polyethene. This reaction may be called:
Addition
Condensation
Substitution
Pyrolysis
4060. Addition of unsymmetrical reagent to an unsymmetrical alkene is governed by:
Cannizzaro's reaction
Kirchoff rule
Aldol condensation
Markownikow's rule
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