1
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Which of the following oxides is most acidic in nature?
A
MgO
B
BeO
C
BaO
D
CaO
2
NEET 2017
MCQ (Single Correct Answer)
+4
-1
The element Z = 114 has been discovered recently. It will belong to which of the following family/group and electronic configuration ?
A
Carbon family, [Rn] 5f14 6d10 7s2 7p2
B
Oxygen family, [Rn] 5f14 6d10 7s2 7p4
C
Nitrogen family, [Rn] 5f14 6d10 7s2 7p6
D
Halogen family, [Rn] 5f14 6d10 7s2 7p5
3
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
The species Ar, K+ and Ca2+ contain the same number of electrons. In which order do their radii increase ?
A
Ca2+ < K+ < Ar
B
K+ < Ar < Ca2+
C
Ar < K+ < Ca2+
D
Ca2+ < Ar < K+
4
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$$-$$
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