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Parag
Subject: Chemistry
, asked on 23/5/18
Q. Can anyone explain this question with some examples?
While using IUPAC nomenclature, we have to number the carbon atoms on the long carbon-chain according to the functional groups present on them. Therefore, if we arrange following functional groups according to the decreasing order of their preference, the order will be :
(A)
-
C
O
O
H
,
-
S
O
3
H
,
-
C
O
N
H
2
,
-
C
H
O
(B)
-
S
O
3
H
,
-
C
O
O
H
,
-
C
O
N
H
2
,
-
C
H
O
(C)
-
C
H
O
-
C
O
O
H
,
-
S
O
3
H
,
-
C
O
N
H
2
,
(D)
-
C
O
N
H
2
,
-
C
H
O
-
S
O
3
H
,
-
C
O
O
H
,
Answer
1
Asheesh Kumar
Subject: Chemistry
, asked on 14/5/18
Types of Functional groups present in this compound and name it-
Answer
2
Harini
Subject: Chemistry
, asked on 6/5/18
WHEN WE PUT CARBOXYLIC GROUP IN WATER H FROM OH LEAVES AS O IS ELECTRONEGATIVE SO MORE OF H
+
IONS ARE THERE SO ACIDIC PROPERTY AM I RIGHT ??? HOW IS IT FOR AMINE
Answer
1
Preet Bakriwala
Subject: Chemistry
, asked on 25/4/18
What is name of this structure
Q.
Answer
2
Nidhi Baghel
Subject: Chemistry
, asked on 20/4/18
If there are more than one chains containing maximum and equal no. of carbon atoms as well as maximum and equal no. of substituents in an organic compound, how will we select the parent chain? Also, if there are no functional groups.
Q. Write IUPAC Name of –
Answer
1
Jeneeta Eliza John
Subject: Chemistry
, asked on 10/4/18
In the first reaction, since both OH and NH2 are EDG, how do we decide if it goes to ortho or para of OH or NH2? Also in the 2nd reaction, does it go to Meta of No2 (since No2 is EWG) or para/ortho of OH? Ans is (4)
Q11. In the given reaction
A and B are respectively
Answer
2
Jeneeta Eliza John
Subject: Chemistry
, asked on 10/4/18
Please explain 6th one :
6. The correct order of stability of given carbonations is .
(1) I>IV>III>II (2) I>IV>II>III
(3) IV>I>III>II (4) IV>I>II>III
Ans is (4)
Answer
1
Jeneeta Eliza John
Subject: Chemistry
, asked on 10/4/18
Please explain why option (3) is wrong Ans is (1)
Which of the following
is aromatic carbanion?
Answer
1
Jeneeta Eliza John
Subject: Chemistry
, asked on 10/4/18
Please answer 51. What is the stability order of anti aromatic compounds?
Q.51. The compound which is antiaromatic and least stable is
(1)
(2)
(3)
(4)
Answer
3
Abhranil Dey
Subject: Chemistry
, asked on 30/3/18
Calculate the temperature of 2moles of SO2 gas contained in a 5L vessel at 10 bar pressure. Given that for SO2 gas Vander Waals constants are: a= 6.7bar L?mol^-2 and b= 0.0564L mol^-1. ( R= 0.0821L atm K^-1mol^-1)
Answer
1
Ekta Ray
Subject: Chemistry
, asked on 29/3/18
Please ans this with reasons
11.
Among the following, the most stable isomer is :
Answer
1
Ashutosh Kumar
Subject: Chemistry
, asked on 27/3/18
4. Write IUPAC name of:-
Answer
1
Pragati Gupta
Subject: Chemistry
, asked on 26/3/18
Q. The most polar form of 1-Nitropropane is:
Answer
1
Pragati Gupta
Subject: Chemistry
, asked on 26/3/18
35. The compound with following configuration is called:-
1. (2S, 3S)-2 chloro-3-pentanol
2. (2S, 3R)-2-chloro-3-pentanol
3. (2R, 3R)-2-chloro-3pentanol
4. (2R, 3S)-2-chloro-3-pentanol
Answer
1
Pragati Gupta
Subject: Chemistry
, asked on 26/3/18
Q. Which of the following is relatively mast stable carbocation?
Answer
1
1
2
3
4
5
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What are you looking for?
While using IUPAC nomenclature, we have to number the carbon atoms on the long carbon-chain according to the functional groups present on them. Therefore, if we arrange following functional groups according to the decreasing order of their preference, the order will be :
(A)
(B)
(C)
(D)
Q.
Q. Write IUPAC Name of –
Q11. In the given reaction
A and B are respectively
6. The correct order of stability of given carbonations is .
(1) I>IV>III>II (2) I>IV>II>III
(3) IV>I>III>II (4) IV>I>II>III Ans is (4)
Which of the following is aromatic carbanion?
Q.51. The compound which is antiaromatic and least stable is
(1)
(2)
(3)
(4)
11. Among the following, the most stable isomer is :
1. (2S, 3S)-2 chloro-3-pentanol
2. (2S, 3R)-2-chloro-3-pentanol
3. (2R, 3R)-2-chloro-3pentanol
4. (2R, 3S)-2-chloro-3-pentanol
Q. Which of the following is relatively mast stable carbocation?