1
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

The major product of the following reaction is :

WB JEE 2024 Chemistry - Halogen Derivatives Question 1 English

A
WB JEE 2024 Chemistry - Halogen Derivatives Question 1 English Option 1
B
WB JEE 2024 Chemistry - Halogen Derivatives Question 1 English Option 2
C
WB JEE 2024 Chemistry - Halogen Derivatives Question 1 English Option 3
D
WB JEE 2024 Chemistry - Halogen Derivatives Question 1 English Option 4
2
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

Which of the following statements is correct for a spontaneous polymerization reaction ?

A
$$\mathrm{\Delta G<0, \Delta H<0, \Delta S<0}$$
B
$$\Delta \mathrm{G}<0, \Delta \mathrm{H}>0, \Delta \mathrm{S}>0$$
C
$$\mathrm{\Delta G>0, \Delta H<0, \Delta S>0}$$
D
$$\Delta \mathrm{G}>0, \Delta \mathrm{H}>0, \Delta \mathrm{S}>0$$
3
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

At 25$$^\circ$$C, the ionic product of water is 10$$^{-14}$$. The free energy change for the self-ionization of water in kCal mol$$^{-1}$$ is close to

A
20.5
B
14.0
C
19.1
D
25.3
4
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

Consider an electron moving in the first Bohr orbit of a $$\mathrm{He}^{+}$$ ion with a velocity $$v_1$$. If it is allowed to move in the third Bohr orbit with a velocity $$v_3$$, then indicate the correct $$v_3: v_1$$ ratio.

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