1
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Identify the correct order of solubility in aqueous medium.
A
Na2S > CuS > ZnS
B
Na2S > ZnS > CuS
C
Cus > ZnS > Na2S
D
ZnS > Na2S > CuS
2
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them
A
$$NO < {O_2}^ - < {C_2}^{2 - } < He_2^ + $$
B
$${O_2}^ - < NO < {C_2}^{2 - } < He_2^ + $$
C
$${C_2}^{2 - } < He_2^ + < {O_2}^ - < NO$$
D
$$He_2^ + < {O_2}^ - < NO < {C_2}^{2 - }$$
3
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
During change of O2 to O$$_2^{ - }$$ ion, the electron adds on which one of the following orbitals ?
A
$${\pi ^ * }$$ orbital
B
$$\pi $$ orbital
C
$${\sigma ^ * }$$ orbital
D
$$\sigma $$ orbital
4
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
Which one of the following pairs is isostructural (i.e., having the same shape and hybridization) ?
A
[BCl3 and BrCl3]
B
[NH3 and NO$$_3^ - $$]
C
[NF3 and BF3]
D
[BF$$_4^ - $$ and NH$$_4^ + $$]
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Class 12