Organic Chemistry
Some Basic Concepts of Organic Chemistry
MCQ (Single Correct Answer)MCQ (Multiple Correct Answer)
Alcohol, Phenols and Ethers
MCQ (Single Correct Answer)
Aldehydes, Ketones and Carboxylic Acids
MCQ (Single Correct Answer)MCQ (Multiple Correct Answer)
Organic Compounds Containing Nitrogen
MCQ (Single Correct Answer)
Chemistry in Everyday Life
MCQ (Single Correct Answer)
1
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Sc (Z = 21) is a transition element but Zn (Z = 30) is not because
A
both Sc3+ and Zn2+ ions are colourless and form white compounds.
B
in case of Sc, 3d orbitals are partially filled but in Zn these are filled.
C
last electron is assumed to be added to 4s level in case of Zn.
D
both Sc and Zn do not exhibit variable oxidation states.
2
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Which of the following statements about the interstitial compounds is incorrect?
A
They are much harder than the pure metal.
B
They have higher melting points than the pure metal.
C
The retain metallic conductivity.
D
They are chemically reactive.
3
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Which of the following lanthanoid ions is diamagnetic?
(At. nos. Ce = 58, Sm = 62, Eu = 63, Yb = 70)
A
Eu2+
B
Yb2+
C
Ce2+
D
Sm2+
4
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
The catalytic activity of transition metals and their compounds is ascribed mainly to
A
their magnetic behaviour
B
their unfilled $$d$$-orbitals
C
their ability to adopt variable oxidation states
D
their chemical reactivity
NEET Subjects