Organic Chemistry
Some Basic Concepts of Organic Chemistry
MCQ (Single Correct Answer)MCQ (Multiple Correct Answer)
Alcohol, Phenols and Ethers
MCQ (Single Correct Answer)
Aldehydes, Ketones and Carboxylic Acids
MCQ (Single Correct Answer)MCQ (Multiple Correct Answer)
Organic Compounds Containing Nitrogen
MCQ (Single Correct Answer)
Chemistry in Everyday Life
MCQ (Single Correct Answer)
1
AIPMT 2007
MCQ (Single Correct Answer)
+4
-1
An element, X has the following isotopic composition:
200X : 90%  199X : 8.0%  202X : 2.0%

The weighted average atomic mass of the naturally occuring element X is closest to
A
201 amu
B
202 amu
C
199 amu
D
200 amu
2
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
The mole fraction of the solute in one molal aqueous solution is
A
0.009
B
0.018
C
0.027
D
0.036
3
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
The maximum number of molecules is present in
A
15 L of H2 gas at STP
B
5 L of N2 gas at STP
C
0.5 g of H2 gas
D
10 g of O2 gas
4
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
Which has maximum molecules?
A
7 g N2
B
2 g H2
C
16 g NO2
D
16 g O2
NEET Subjects