1
JEE Main 2021 (Online) 16th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The INCORRECT statement regarding the structure of C60 is :
A
The five-membered rings are fused only to six-membered rings.
B
It contains 12 six-membered rings and 24 five-membered rings.
C
Each carbon atom forms three sigma bonds.
D
The six-membered rings are fused to both six and five-membered rings.
2
JEE Main 2021 (Online) 16th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
An unsaturated hydrocarbon X on ozonolysis gives A. Compound A when warmed with ammonical silver nitrate forms a bright silver mirror along the sides of the test tube. The unsaturated hydrocarbon X is :
A
HC $$ \equiv $$ C $$-$$ CH2 $$-$$ CH3
B
JEE Main 2021 (Online) 16th March Evening Shift Chemistry - Hydrocarbons Question 58 English Option 2
C
CH3 $$-$$ C $$ \equiv $$ C $$-$$ CH3
D
JEE Main 2021 (Online) 16th March Evening Shift Chemistry - Hydrocarbons Question 58 English Option 4
3
JEE Main 2021 (Online) 16th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The green house gas/es is (are) :

(A) Carbon dioxide

(B) Oxygen

(C) Water vapour

(D) Methane

Choose the most appropriate answer from the options given below :
A
(A) and (C) only
B
(A) and (B) only
C
(A), (C) and (D) only
D
(A) only
4
JEE Main 2021 (Online) 16th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The exact volumes of 1 M NaOH solution required to neutralise 50 mL of 1 M H3PO3 solution and 100 mL of 2 M H3PO2 solution, respectively, are :
A
100 mL and 50 mL
B
100 mL and 200 mL
C
100 mL and 100 mL
D
50 mL and 50 mL
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