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
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
In which of the following options the order of arrangement does not agree with the variation of property indicated against it ?
A
I < Br < Cl < F (increasing electron gain enthalpy)
B
Li < Na < K < Rb (increasing metallic radius)
C
Al3+ < Mg2+ < Na+ < F$$-$$ (increasing ionic size)
D
B < C < N < O (increasing first ionisation enthalpy)
4
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+
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