1
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

Find the compound which have both polar and non-polar covalent bonds.

A
HCN
B
H$$_2$$O$$_2$$
C
NH$$_4$$Cl
D
CH$$_4$$
2
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

In acetylene molecule, between the carbon atoms there are

A
three $$\sigma$$-bonds
B
two $$\sigma$$ and one $$\pi$$-bond
C
one $$\sigma$$ and two $$\pi$$-bonds
D
three $$\pi$$-bonds
3
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

During the formation of a chemical bond

A
energy decreases
B
energy increases
C
energy of the system does not change
D
electron-electron repulsion becomes more than the nucleus-electron attraction
4
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

For a stable molecule the value of bond order must be

A
negative
B
positive
C
zero
D
there is no relationship between stability and bond order
COMEDK Subjects
EXAM MAP