1
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25
Change Language

WB JEE 2023 Chemistry - Alcohol and Ether Question 1 English

If all the nucleophilic substitution reactions at saturated carbon atoms in the above sequence of reactions follow SN2 mechanism, then $$\mathrm{\underline E}$$ and $$\mathrm{\underline F}$$ will be respectively,

A
WB JEE 2023 Chemistry - Alcohol and Ether Question 1 English Option 1
B
WB JEE 2023 Chemistry - Alcohol and Ether Question 1 English Option 2
C
WB JEE 2023 Chemistry - Alcohol and Ether Question 1 English Option 3
D
WB JEE 2023 Chemistry - Alcohol and Ether Question 1 English Option 4
2
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25
Change Language

WB JEE 2023 Chemistry - Aldehyde and Ketone Question 1 English

The correct option for the above reaction is

A
WB JEE 2023 Chemistry - Aldehyde and Ketone Question 1 English Option 1
B
WB JEE 2023 Chemistry - Aldehyde and Ketone Question 1 English Option 2
C
WB JEE 2023 Chemistry - Aldehyde and Ketone Question 1 English Option 3
D
WB JEE 2023 Chemistry - Aldehyde and Ketone Question 1 English Option 4
3
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25
Change Language

Arrange the following in order of increasing mass

I. 1 mole of N$$_2$$

II. 0.5 mole of O$$_3$$

III. $$3.011\times10^{23}$$ molecules of O$$_2$$

IV. 0.5 gram atom of O$$_2$$

A
IV < III < II < I
B
IV < I < III < II
C
III < II < IV < I
D
I < III < II < IV
4
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25
Change Language

Two base balls (masses : m$$_1$$ = 100 g, and m$$_2$$ = 50 g) are thrown. Both of them move with uniform velocity, but the velocity of m$$_2$$ is 1.5 times that of m$$_1$$. The ratio of de Broglie wavelengths $$\lambda$$(m$$_1$$) : $$\lambda$$(m$$_2$$) is given by

A
4 : 3
B
3 : 4
C
2 : 1
D
1 : 2
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