- Which of the following is a force that helps to stabilize the orbitals of carbon atoms in the double bond of an alken a-hyperconjugation b- hyperphysics c- Zaitsev organization d-H-bonding 2- Cis-trans isomerism in alkenes is due to a- free rotation about the double bond c- free rotation about single bond b- restricted rotation about the double bond d- chiral carbon 3- Which of the following concepts explains Markovnikov's rule as applied to the addition of HBr to propene? a- the Aufbau principle b- the nucleophilicity of bromide anion d- the acidity of HBr c- the relative stability of carbocations 4- Why alkyl halides are considered to be very reactive compounds towards nucleophile? a- they have an electrophilic carbon c- they have an electrophilic carbon & a good leaving group d- they have a nucleophilic carbon & a good leaving group 5- What is the most likely reaction for a primary halide to undergo in the presence of relatively small base/nucleophile? a-S,2 b- Syl c- El d-El and Sl b- they have an electrophilic carbon & a bad leaving group 6- A compound with 2 degrees of unsaturation could have______ in it. a- all single bonds b- a double bond c- a triple bond d- a ring 7- Which of the following groups has the highest priority according to the Cahn-Ingold-Prelog sequence rules? a-CH=CH₂ b- C=CH c-CH(OH)CH3 d- CH₂CH₂OH a- SN1 8- The reagent needed to convert 2-butyne to cis-2-butene is : a-Na/NH, b- H₂/Pt c- H₂/Lindlar's catalyst 9- Arrowheads with a "half" head ("fish-hook") indicate a- Hetrolytic process b- Polar process c-homolytic process 10-Inversion of configuration results from which one of the following mechanisms? b- S 2 c- El d- LiNH; d- E2 d- No indication
- Which of the following is a force that helps to stabilize the orbitals of carbon atoms in the double bond of an alken a-hyperconjugation b- hyperphysics c- Zaitsev organization d-H-bonding 2- Cis-trans isomerism in alkenes is due to a- free rotation about the double bond c- free rotation about single bond b- restricted rotation about the double bond d- chiral carbon 3- Which of the following concepts explains Markovnikov's rule as applied to the addition of HBr to propene? a- the Aufbau principle b- the nucleophilicity of bromide anion d- the acidity of HBr c- the relative stability of carbocations 4- Why alkyl halides are considered to be very reactive compounds towards nucleophile? a- they have an electrophilic carbon c- they have an electrophilic carbon & a good leaving group d- they have a nucleophilic carbon & a good leaving group 5- What is the most likely reaction for a primary halide to undergo in the presence of relatively small base/nucleophile? a-S,2 b- Syl c- El d-El and Sl b- they have an electrophilic carbon & a bad leaving group 6- A compound with 2 degrees of unsaturation could have______ in it. a- all single bonds b- a double bond c- a triple bond d- a ring 7- Which of the following groups has the highest priority according to the Cahn-Ingold-Prelog sequence rules? a-CH=CH₂ b- C=CH c-CH(OH)CH3 d- CH₂CH₂OH a- SN1 8- The reagent needed to convert 2-butyne to cis-2-butene is : a-Na/NH, b- H₂/Pt c- H₂/Lindlar's catalyst 9- Arrowheads with a "half" head ("fish-hook") indicate a- Hetrolytic process b- Polar process c-homolytic process 10-Inversion of configuration results from which one of the following mechanisms? b- S 2 c- El d- LiNH; d- E2 d- No indication
Chemistry
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Q 1 please
Transcribed Image Text:- Which of the following is a force that helps to stabilize the orbitals of carbon atoms in the double bond of an alken
a-hyperconjugation
b- hyperphysics
c-Zaitsev organization
d-H-bonding
2- Cis-trans isomerism in alkenes is due to
a- free rotation about the double bond
c- free rotation about single bond
3- Which of the following concepts explains Markovnikov's rule as applied to the addition of HBr to propene?
a- the Aufbau principle
b- the nucleophilicity of bromide anion
d- the acidity of HBr
c- the relative stability of carbocations
4- Why alkyl halides are considered to be very reactive compounds towards nucleophile?
a- they have an electrophilic carbon
c- they have an electrophilic carbon & a good leaving group
d- they have a nucleophilic carbon & a good leaving group
5- What is the most likely reaction for a primary halide to undergo in the presence of relatively small base/nucleophile?
a-S2
b- Sx1
c- El
d-El and Sl
b- restricted rotation about the double bond
d- chiral carbon
6- A compound with 2 degrees of unsaturation could have_____ in it.
a- all single bonds
b- a double bond
c- a triple bond
d- a ring
7- Which of the following groups has the highest priority according to the Cahn-Ingold-Prelog sequence rules?
a-CH=CH₂
b-C=CH
c-CH(OH)CH;
d- CH₂CH₂OH
a- SN1
b- they have an electrophilic carbon & a bad leaving group
8- The reagent needed to convert 2-butyne to cis-2-butene is :
a-Na/NH3
b- H₂/Pt
c- H₂/Lindlar's catalyst
9- Arrowheads with a "half" head ("fish-hook") indicate
a- Hetrolytic process
b- Polar process
c-homolytic process
10-Inversion of configuration results from which one of the following mechanisms?
b- S 2
c- El
d- LiNH;
d- E2
d- No indication
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