1
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
If Avogadro number NA, is changed from 6.022 $$ \times $$ 1023 mol$$-$$1 to 6.022 $$ \times $$ 1020 mol$$-$$1, this would change
A
the mass of one mole of carbon
B
the ratio of chemical species to each other in a balanced equation
C
the ratio of elements to each other in a compound
D
the definition of mass in units of grams.
2
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
The number of water molecules is maximum in
A
1.8 gram of water
B
18 gram of water
C
18 moles of water
D
18 molecules of water
3
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
What is the mole fraction of the solute in a 1.00 m aqueous solution?
A
1.770
B
0.0354
C
0.0177
D
0.177
4
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
A mixture of gases contains H2 and O2 gases in the ratio of 1 : 4 (w/w). What is the molar ratio of the two gases in the mixture ?
A
16 : 1
B
2 : 1
C
1 : 4
D
4 : 1
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