1
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

The general formula of a cycloalkene is

A
C$$_n$$H$$_{2n+2}$$
B
C$$_n$$H$$_{2n-2}$$
C
C$$_n$$H$$_{2n}$$
D
C$$_n$$H$$_{n}$$
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

Denatured alcohol is

A
rectified spirit
B
undistilled ethanol
C
rectified spirit + methanol + naphtha
D
ethanol + methanol
4
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
EXAM MAP