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WBJEE
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Chemistry
List of top Chemistry Questions on Mole concept and Molar Masses asked in WBJEE
$1$ mL of water has $25$ drops. Let $N_A$ be the Avogadro number. What is the number of molecules present in $1$ drop of water? (Density of water = $1$ g/mL)
WBJEE - 2022
WBJEE
Chemistry
Mole concept and Molar Masses
The normality of $30$ volume $H_2O_2$ is
WBJEE - 2011
WBJEE
Chemistry
Mole concept and Molar Masses
Consider the following species
(
I
)
S
4
O
6
2
−
(
II
)
S
3
O
9
(
III
)
S
2
O
5
2
−
(
IV
)
P
3
O
9
3
−
Which of the above species have same number of
X
−
0
−
X
linkages?
(
X
=
P
or
S
)
WBJEE
Chemistry
Mole concept and Molar Masses
Which of the following statements about natural rubber is true?
WBJEE
Chemistry
Mole concept and Molar Masses