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
At 273 K temperature and 76 cm Hg pressure the density of a gas is 1.964 g L-1. The gas is
A
CH4
B
CO
C
He
D
CO2
3
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
Change Language
Equal masses of ethane and hydrogen are mixed in an empty container at 298 K. The fraction of total pressure exerted by hydrogen is
A
15:16
B
1:1
C
1:4
D
1:6
4
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
Change Language
An ideal gas expands adiabatically against vacuum. Which of the following is correct for the given process?
A
$$\Delta $$S = 0
B
$$\Delta $$T = $$ - $$ve
C
$$\Delta $$U = 0
D
$$\Delta $$P = 0
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