1
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
Change Language
5 mL of 0.1 M Pb(NO3)2 is mixed with 10 mL of 0.02 M KI. The amount of PbI2 precipitated will be about
A
10-2 mol
B
10-4 mol
C
2 $$ \times $$ 10-4 mol
D
10-3 mol
2
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
Change Language
Which of the following has the largest number of atoms?
A
1 g of Ag
B
1 g of Fe
C
1 g of Cl2
D
1 g of Mg
3
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
Change Language
What will be the mass of one atom of 12C?
A
1 amu
B
1.9923 $$ \times $$ 10-23g
C
1.6603 $$ \times $$ 10-22g
D
6 amu
4
WB JEE 2019
MCQ (Single Correct Answer)
+1
-0.33
Change Language
In the crystalline solid MSO4 . nH2O of molar mass 250 g mol$$-$$1, the percentage of anhydrous salt is 64 by weight. The value of n is
A
2
B
3
C
5
D
7
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