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 of the following organic molecules does not have carbon-carbon double bond

(1) C₃H₄O
(2) C₃H₄O₂
(3) C₃H₈O
(4) C₆H₆O

Which Vitamin is found in abundance in Amla?

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

An organic compound which is used to preserve biological specimen is 

(1) ether 
(2) methanal 
(3) ethanal 
(4) ethanol

The functional group in aldehyde is

(1)   (2)  (3)   (4)