1
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Change Language
The variation of the boiling points of the hydrogen halides is in the order HF > HI > HBr > HCl.

What explains the higher boiling point of hydrogen fluoride?
A
There is strong hydrogen bonding between HF molecules.
B
The bond energy of HF molecules is greater than in other hydrogen halides.
C
The effect of nuclear shielding is much reduced in fluorine which polarises the HF molecule.
D
The electronegativity of fluorine is much higher than for other elements in the group.
2
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Change Language
The stability of +1 oxidation state among Al, Ga, In and Tl increases in the sequence
A
Al < Ga < In < Tl
B
Tl < In < Ga < Al
C
In < Tl < Ga < Al
D
Ga < In < Al < Tl
3
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Change Language
Nitrogen dioxide and sulphur dioxide have some properties in common . Which property is shown by one of these compounds , but not by the other?
A
Is soluble in water.
B
Is used as a food preservative.
C
Forms 'acid-rain'.
D
Is a reducing agent.
4
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
Acidity of diprotic acids in aqueous solutions increases in the order
A
H2S < H2Se < H2Te
B
H2Se < H2S < H2Te
C
H2Te < H2S < H2Se
D
H2Se < H2Te < H2S

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