1
WB JEE 2025
MCQ (Single Correct Answer)
+1
-0.25

The number of terminal and bridging hydrogens in $\mathrm{B}_2 \mathrm{H}_6$ are respectively

A
4 and 2
B
2 and 4
C
2 and 2
D
4 and 4
2
WB JEE 2022
MCQ (Single Correct Answer)
+1
-0.25

The metal-pair that can produce nascent hydrogen in alkaline medium is :

A
Zn, Al
B
Fe, Ni
C
Al, Mg
D
Mg, Zn
3
WB JEE 2022
MCQ (Single Correct Answer)
+1
-0.25

Which of the following is radioactive?

A
Hydrogen
B
Deuterium
C
Tritium
D
none
4
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
How and why does the density of liquid water change on prolonged electrolysis?
A
Decreases, as the proportion of H2O increases
B
Remains unchanged
C
Increases, as the proportion of D2O increases
D
Increases, as the volume decreases
Questions Asked from MCQ (Single Correct Answer)
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