1
NEET 2013
MCQ (Single Correct Answer)
+4
-1
6.02 $$ \times $$ 1020 molecules of urea present in 100 mL of its solution. The concentration of solution is
A
0.001 M
B
0.1 M
C
0.02 M
D
0.01 M
2
NEET 2013
MCQ (Single Correct Answer)
+4
-1
How many grams of concentrated nitric acid solution should be used to prepare 250 mL of 2.0 M HNO3? The concentrated acid is 70% HNO3.
A
70.0 g conc. HNO3
B
54.0 g conc. HNO3
C
45.0 g conc. HNO3
D
90.0 g conc. HNO3
3
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
Which has the maximum number of molecules among the following ?
A
44 g CO2
B
48 g O3
C
8 g H2
D
64 g SO2
4
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
The number of atoms in 0.1 mol of a triatomic gas is (NA = 6.02 $$ \times $$ 1023 mol$$-$$1)
A
6.026 $$ \times $$ 1022
B
1.806 $$ \times $$ 1023
C
3.600 $$ \times $$ 1023
D
1.800 $$ \times $$ 1022
NEET Subjects
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Medical
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Graduate Aptitude Test in Engineering
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CBSE
Class 12