1
IIT-JEE 2000 Screening
MCQ (Single Correct Answer)
+1
-0.25
Amongst H2O, H2S, H2Se and H2Te, the one with the highest boiling point is
A
H2O because of hydrogen bonding
B
H2Te because of higher molecular weight
C
H2S because of hydrogen bonding
D
H2Se because of lower molecular weight
2
IIT-JEE 2000 Screening
MCQ (Single Correct Answer)
+2
-0.5
Read the following statement and explanation and answer as per the options given below

ASSERTION : The first ionization energy of Be is greater than that of B.

REASON : 2p orbital is lower in energy than 2s.
A
If both assertion and reason are CORRECT, and reason is the CORRECT explanation of the assertion
B
If both assertion and reason are CORRECT, and reason is not the CORRECT explanation of the assertion
C
If assertion is CORRECT, but reason is INCORRECT
D
If assertion is INCORRECT, but reason is CORRECT
3
IIT-JEE 1996
MCQ (Single Correct Answer)
+1
-0.25
Which of the following has the maximum number of unpaired electrons?
A
Mg2+
B
Ti3+
C
V3+
D
Fe2+
4
IIT-JEE 1995 Screening
MCQ (Single Correct Answer)
+1
-0.25
Which has most stable +2 oxidation state?
A
Sn
B
Pb
C
Fe
D
Ag
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