1
JEE Main 2021 (Online) 25th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Which one of the following reactions will not form acetaldehyde?
A
$$C{H_3}C{H_2}OH\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{573K}^{Cu}} $$
B
$$C{H_3}C{H_2}OH\buildrel {Cr{O_3} - {H_2}S{O_4}} \over \longrightarrow $$
C
$$C{H_2} = C{H_2} + {O_2}\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{{H_2}O}^{Pd(II)/Cu(II)}} $$
D
$$C{H_3}CN\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{ii)\,{H_2}O}^{i)\,DIBAL - H}} $$
2
JEE Main 2021 (Online) 25th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The plots of radial distribution functions for various orbitals of hydrogen atom against 'r' are given below :

JEE Main 2021 (Online) 25th February Morning Shift Chemistry - Structure of Atom Question 90 English
The correct plot for 3s orbital is :
A
(B)
B
(A)
C
(C)
D
(D)
3
JEE Main 2021 (Online) 25th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Identify A in the given chemical reaction.

JEE Main 2021 (Online) 25th February Morning Shift Chemistry - Hydrocarbons Question 64 English
A
JEE Main 2021 (Online) 25th February Morning Shift Chemistry - Hydrocarbons Question 64 English Option 1
B
JEE Main 2021 (Online) 25th February Morning Shift Chemistry - Hydrocarbons Question 64 English Option 2
C
JEE Main 2021 (Online) 25th February Morning Shift Chemistry - Hydrocarbons Question 64 English Option 3
D
JEE Main 2021 (Online) 25th February Morning Shift Chemistry - Hydrocarbons Question 64 English Option 4
4
JEE Main 2021 (Online) 25th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Which of the following equation depicts the oxidizing nature of H2O2?
A
$$C{l_2} + {H_2}{O_2} \to 2HCl + {O_2}$$
B
$$KI{O_4} + {H_2}{O_2} \to KI{O_3} + {H_2}O + {O_2}$$
C
$$2{I^ - } + {H_2}{O_2} + 2{H^ + } \to {I_2} + 2{H_2}O$$
D
$${I_2} + {H_2}{O_2} + 2O{H^ - } \to 2{I^ - } + 2{H_2}O + {O_2}$$
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