Property of self-combination of the atoms of the same element to form long chains is known as

(1) Protonation
(2) Carbonation
(3) Coronation
(4) Catenation

Which of the following hydrocarbons have acidic hydrogen?
(1) CH₂=CH₂
(2)
(3) CH₄
(4) C₆H₆

Coal is called fossil fuel because :

(1) In future coal will become completely exhausted
(2) It was formed 300 million years ago
(3) Fossils are obtained along with mining of coal
(4) It was formed from the dead remains of living organisms

Which Vitamin is found in abundance in Amla?

(1) Vitamin -A
(2) Vitamin - C
(3) Vitamin - B
(4) Vit amin - D

Hydrocarbon 2-methylbutane is an isomer of

(1) n-pentane
(2) n-butane
(3) propane
(4) iso-butanens.