1
JEE Main 2014 (Offline)
MCQ (Single Correct Answer)
+4
-1
The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1 : 4. The ratio of number of their molecule is:
A
1: 8
B
3 : 16
C
1 : 4
D
7 : 32
2
JEE Main 2013 (Offline)
MCQ (Single Correct Answer)
+4
-1
A gaseous hydrocarbon gives upon combustion 0.72 g of water and 3.08 g of CO2. The empirical formula of the hydrocarbon is
A
C2H4
B
C3H4
C
C6H5
D
C7H8
3
JEE Main 2013 (Offline)
MCQ (Single Correct Answer)
+4
-1
The molarity of a solution obtained by mixing 750 mL of 0.5 (M) HCl with 250 mL of 2(M) HCl will be:
A
1.00 M
B
1. 75 M
C
0.975 M
D
0.875 M
4
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
The density (in g mL-1) of a 3.60 M sulphuric acid solution that is 29% H2SO4 (molar mass = 98 g mol-1) by mass will be
A
1.45
B
1.64
C
1.88
D
1.22
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