1
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Which of the following orders of ionic radii is correctly represented ?
A
H$$-$$ > H$$^ \bullet $$ > H+
B
Na+ > F$$-$$ > O2$$-$$
C
F$$-$$ > O2$$-$$ > Na+
D
A$$l$$3+ > Mg2+ > N3$$-$$
2
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Which of the following molecules has the maximum dipole moment ?
A
CO2
B
CH4
C
NH3
D
NF3
3
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Which one of the following species has plane triangular shape ?
A
N3
B
NO3$$-$$
C
NO2$$-$$
D
CO2
4
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Which of the following statements is correct for the spontaneous adsorption of a gas?
A
$$\Delta $$S is negative and, therefore $$\Delta $$H should be highly positive.
B
$$\Delta $$S is negative and therefore, $$\Delta $$H should be highly negative.
C
$$\Delta $$S is positive and therefore, $$\Delta $$H should be negative .
D
$$\Delta $$S is positive and therefore, $$\Delta $$H should also be highly positive.
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