1
JEE Main 2021 (Online) 27th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
JEE Main 2021 (Online) 27th July Morning Shift Chemistry - Biomolecules Question 79 English
The compound 'A' is a complementary base of _______________ in DNA stands.
A
Uracil
B
Guanine
C
Adenine
D
Cytosine
2
JEE Main 2021 (Online) 27th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Staggered and eclipsed conformers of ethane are :
A
Polymers
B
Rotamers
C
Enantiomers
D
Mirror images
3
JEE Main 2021 (Online) 27th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Match List - I with List - II :

List - I List - II
(a) NaOH (i) Acidic
(b) $$Be{(OH)_2}$$ (ii) Basic
(c) $$Ca{(OH)_2}$$ (iii) Amphoteric
(d) $$B{(OH)_3}$$
(e) $$Al{(OH)_3}$$


Choose the most appropriate answer from the options given below
A
(a)-(ii), (b)-(ii), (c)-(iii), (d)-(ii), (e)-(iii)
B
(a)-(ii), (b)-(iii), (c)-(ii), (d)-(i), (e)-(iii)
C
(a)-(ii), (b)-(ii), (c)-(iii), (d)-(i), (e)-(iii)
D
(a)-(ii), (b)-(i), (c)-(ii), (d)-(iii), (e)-(iii)
4
JEE Main 2021 (Online) 27th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
JEE Main 2021 (Online) 27th July Morning Shift Chemistry - Basics of Organic Chemistry Question 122 English
The correct order of stability of given carbocation is :
A
A > C > B > D
B
D > B > C > A
C
D > B > A > C
D
C > A > D > B
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