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 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
An element has a body centered cubic (bcc) structure with a cell edge of 288 pm. The atomic radius is :
A
$${{\sqrt 2 } \over 4} \times 288$$ pm
B
$${{4 } \over \sqrt 3} \times 288$$ pm
C
$${{4 } \over \sqrt 2} \times 288$$ pm
D
$${{\sqrt 3 } \over 4} \times 288$$ pm
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
A compound is formed by cation C and anion A. The anions form hexagonal close packed (hcp) lattice and the cations occupy 75% of octahedral voids. The formula of the compound is :
A
C3A4
B
C4A3
C
C2A3
D
C3A
3
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Iron exhibits bcc structure at room temperature. Above 900°C, it transforms to fcc structure. The ratio of density of iron at room temperature to that at 900°C (assuming molar mass and atomic radii of iron remains constant with temperature) is
A
$${{\sqrt 3 } \over {\sqrt 2 }}$$
B
$${{4\sqrt 3 } \over {3\sqrt 2 }}$$
C
$${{3\sqrt 3 } \over {4\sqrt 2 }}$$
D
$${1 \over 2}$$
4
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
In calcium fluoride, having the fluorite structure, the coordination numbers for calcium ion (Ca2+) and fluoride ion (F$$-$$) are
A
4 and 2
B
6 and 6
C
8 and 4
D
4 and 8
NEET Subjects