Organic synthesis and its application
Organic chemistry unit test:
Our page updates daily between 9:00pm to 9:30pm (Indian standard Time) with more questions.
Add our page in your home screen to get regular updates.
Share and support us.
https://chat.whatsapp.com/G7LMGW8ec7o1mBz1qVq2gi
Telegram:
https://t.me/chem369
Unit test -6 Marks-20(For each question 1/3 negative marking)
Question-1:
MCQ point-2 Time-2mins
For the following two reactions, which option is correct?
Select the correct option:
1: A is possible to form, but not B 2: B is possible to form, but not A
3: A & B both possible to form 4: A & B both is not possible to form.
Answer:
1
Solution:
Question-2: MCQ Point-2 Time-2mins
What will be the final product ?
Select the correct option:
A: B:
C: D:
Answer:
A
Solution:
Answer:
A
Solution:
Question-3: MCQ Point-2 Time-2mins
What will be the final product if the following substrate reacts with
1. NH2-NH2, 2. KOH, ∆
Substrate:
Select the correct option:
A:
B:
C:
D:
Answer:
A
Solution:
Question-4: MCQ 2 point
Which statement is correct for Carbonic acid?
1: It is stable in aqueous solution, but not at anhydrous condition.
2: It is unstable at aqueous solution, but stable at anhydrous condition.
3: It is stable at both aqueous & anhydrous condition
4: It is unstable at both aqueous & anhydrous condition
Answer:
A
Solution:
Solution:
Question-5: MCQ point-2
Possible structure of A & B :
Select the correct option:
1: A= B=
2: A= B=
3: A= B=
4: A= B=
Answer:
2
Solution:
Question-6: NAT Point-2
Total no of acetal units for the following is ________.
Answer:
4
Solution:
Question-7: MCQ point-2
Select the correct option:
1: A only
2: A & B
3: B & C
4: All
Answer:
4
Solution:
Six-membered cyclic transition states can be written for all of them
Question-8: MCQ Point-2
What will be the final product
Select the correct opti
1:
2:
3:
4:
Answer
Solution
Question-9: NAT Point-
Among the following compounds, ________number of compound(s) undergo(es) decarboxylation
Ans
Solution
Question-1
Coming so
Count your scor
Unit test
Type of question: MCQ + NA
T-5
e
on 0:
:
1wer:.2
:
A:DCB Aon:
? Unit test-5
Type of question: MCQ + NAT
Type of question: MCQ + NAT
Question-1:
Among the following how many are not fully conjugated? [NAT]
____________.
Answer:
4
Solution:
Not fully conjugated
Not fully conjugated
Not fully conjugated
Not fully conjugated
These two are fully conjugated.
Question-2:
Among the following,_________ are aromatic in nature. [NAT]
Answer:
2
Solution:
Aromaticity → through (4n+2) π electrons counting.
Question-3:
Among the following how many are aromatic in nature? [NAT]
______________.
Answer:
4
Solution:
Aromaticity → through (4n+2) π electrons counting.
The structure given in question at 3 will be 4-pyridone( please make correction)
Question-4:
In aqueous solution, among the following,hydrate of ________ is(are) undetectable. [MCQ]
(A). (B)
(A). (B)
2
Solution:
Reason:
Question-5:
Among the following non-catalytic method (s) used to carry out the following transformation , _______ is(are) true.[NAT]
Transformation:
H3C(H2C)5HC=CH2
↓
CH3(CH2)5CH2CH3
i) Br2,CCl4; LAH in dry ether
ii) HBr; Mg in dry ether;H3O+
iii) B2H6,THF;CH3COOH
Answer:
3
Solution:
Question-6:
What is the relationship between these molecules?
(A). (B)
(C). (D)
Select the correct option:
1) A & B are tautomers
2) C & D are tautomers
3) A & B are resonance structures
4) none
Question-7:
Pka : 10
Select the correct option:
I) A-4,B-7,C-9,D-11
II) A-7,B-4,C-11,D-4
III) A-7,B-9,C-11,D-9
IV) A-4,B-7,C-11,D-9
Answer:
IV
Solution:
Unit test-4
Type of questions: MCQ
Question-1:
A B C
Select the correct option:
1) A>B>C
2) A>C>B
3) B>A>C
4) C>B>A
Answer:
1
Solution:
Question-2:
Answer:
C
Solution:
You must be logged in to post a comment.