1
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
Change Language
What is the major product of the following reaction?

WB JEE 2020 Chemistry - Aldehyde and Ketone Question 8 English
A
WB JEE 2020 Chemistry - Aldehyde and Ketone Question 8 English Option 1
B
WB JEE 2020 Chemistry - Aldehyde and Ketone Question 8 English Option 2
C
WB JEE 2020 Chemistry - Aldehyde and Ketone Question 8 English Option 3
D
WB JEE 2020 Chemistry - Aldehyde and Ketone Question 8 English Option 4
2
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
Change Language
The maximum number of electrons in an atom in which the last electron filled has the quantum numbers n = 3, l = 2 and m = $$ - $$ 1 is
A
17
B
27
C
28
D
30
3
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
Change Language
In the face centered cubic lattice structure of gold the closest distance between gold atoms is ('a' being the edge length of the cubic unit cell)
A
$$a\sqrt 2 $$
B
$${a \over {\sqrt 2 }}$$
C
$${a \over {2\sqrt 2 }}$$
D
$$2\sqrt 2 a$$
4
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
Change Language
The equilibrium constant for the following reactions are given at 25$$^\circ $$C

$$2A$$ $$\rightleftharpoons$$ B + C, K1 = 1.0

$$2B$$ $$\rightleftharpoons$$ C + D, K2 = 16

$$2C + 2D$$ $$\rightleftharpoons$$ 2P, K3 = 25

The equilibrium constant for the reaction

P $$\rightleftharpoons$$ $$A + {1 \over 2}$$B at 25$$^\circ $$C is
A
$${1 \over 20}$$
B
20
C
$${1 \over 42}$$
D
21
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