The IUPAC name of the above-mentioned compound is:
1. cis-2-Chloro-3-iodo-2-pentene
2. trans-2-Chloro-3-iodo-2-pentene
3. cis-3-Iodo-4-chloro-3-pentene
4. trans-3-Iodo-4-chloro-3-pentene
The species among the following that is not an electrophile is:
1.
2.
3.
4.
The IUPAC name of CH3CH=CHC≡CH is:
1. Pent - 3 - en - 1 - yne
2. Pent - 2 - en - 4 - yne
3. Pent - 1 - yn - 3 - ene
4. Pent - 4 - yn - 2 – ene
Polarisation of electrons in acrolein may be written as:
1.
2.
3.
4.
The correct order of –I effect is:
1. -NR3+ > -OR > -F
2. -F > -NR3+ > -OR
3.-NR3+ > -F > -OR
4. -OR > -NR3+ > -F
The correct order of stability is:
1. | 1–butene > Trans–2–butene > Cis–2–butene |
2. | Trans–2–butene > 1–butene > Cis–2–butene |
3. | Trans–2–butene > Cis–2-butene > 1–butene |
4. | Cis-2–butene > Trans–2–butene > 1–butene |
IUPAC name of is:
1. 2-Chloro-3-iodo-2-pentene
2. 2-Chloro-3-iodo-3-pentene
3. 2-Iodo-3-chloro-pentene
4. None of the above
2-Butene shows geometrical isomerism due to:
1. Restricted rotation about double bond
2. Free rotation about double bond
3. Free rotation about single bond
4. Chiral carbon
Dihedral angle in staggered form of ethane is:
1.
2.
3.
4.
Which of the following is most reactive towards electrophilic substitution reaction?
1. | 2. | ||
3. | 4. |