Additional
1. IUPAC name of the (CH3)2 CHCH2CH2Br is
1. 3, 3 – DimethylDimethyl-1- bromo propane
2. 1 – bromopentane
3. 22-methylmethyl-4-bromo butane
4.
4 11-bromo
b
– 3- mathylbutane
th lb t
2 IUPAC name of H2C =C2.
=C-CH=CH
CH=CH--CH3 is
|
1.
2.
3.
4.
2
2
2
2
CH3
– methylmethyl-1,3 butadiene
– methylmethyl-1,3 pentadiene
methyl - 2,4 – pentadiene
– methylmethyl-1,3 – hexadiene
3. IUPAC name of the compound
CH3
CH3
CH3—C—CH2—C—CH3
CH3
CH3
1. 2,5,5 – trimethyltrimethyl-2-ethyl pentane
2. 2
2--ethyl
ethyl--2,5,5 trimethyl pentane
3. 2,2,4,4 – tetramethyl hexane
4. 3,3,5,5 tetramethyl hexane
4. IUPAC name of C2H5-O-CH3 is
1 methoxyethane
1.
2 dimethylether
2.
3. dimethyl oxide
4. ethoxymethane
5. 2 – pentanone and 3 – pentanone exhibit
1. geometricall isomerism
2. position isomerism
3. metamerism
4. chain isomerism
6. The compond which is not isomeric with
diethylether is
1. Propyl methyl ether
2. butan
butan--1-ol
3. 2
2--methyl propan -2-ol
4. butanone
7. Which among
g the following
g compounds
p
show
diastereo isomers?
1) Lactic acid
2) 2, 3 Dichlorobutane
3) 2 – methyl butanoic acid
4) 3 – Methyl
M th l butanoicacid
b t
i id
8 The open chain structure of fructose has 3 chiral
8.
carbon atoms. Hence the number of optical
isomers possible is
1) 4
2) 16
3) 8
4) 2
9. A mixture of 50% of ‘d’ tartaric acid and 50% ‘l’ tartaric
acid
id iis optically
ti ll inactive
i
ti due
d to
t
1. Internal compensation
2. Presence of p
plane of symmetry
y
y
3. external compensation
4. absence of chiral centre
10. The amino acid which is not optically active is
1. glycine
2. alanine
3. Serine
4. proline
11 The number of isomers by lactic is
11.
1) 2
2) 3
3) 4
4) 6
12. An optically active compounds is
1) 1
1--Bromobutane
2) 3
3--Bromobutyric acid
3) 2
2--Bromo – 2 – Melhyl propane
4) 1
1--Bromo – 2 – Methyl propane
13. How many chiral carbon atoms are present in
2,, 3,, 4 trichloro pentane.
p
1). Three
2). Two
3). One
4). Four
14 How
14.
H
many optically
ti ll active
ti stereomers
t
are
possible for butane 2, 33-diol
) 1
2).
) 2
3).
) 3
4).
) 4
1).
15.. The optically active tartaric acid is named as
15
D – (+) tartaric acid became if has a positive.
positive.
1. Optical rotation and is derived from D - glucose
2. pH in an organic solvent
3. Optical rotation and is derived from
D-(+) – glyceroldehyde
4. Optical rotation only when substituted by deuterium
16.. The number of possible enantiomeric pairs that can be
16
produced during monochlorination of 2-methyl butane is
1) 2
2) 3
3) 4
4) 1