Fill in the following blanks with suitable words : (a) Fossil fuels ar

1.	Fill in the following blanks with suitable words : (a) Fossil fuels are ___ , ___ and ___ . (b) Coal contains mainly ___ . (c) The slow process of conversion of dead vegetation into coal is callled ___ . (d) The process of separation of different constituents from petroleum is called ___ . (e) The least polluting fuel for vehicles is ___ . (f) The burning of fossil fuels causes air ___ and also leads to global ___ .
Answer» Fill in the following blanks with suitable words : (a) Fossil fuels are ___ , ___ and ___ . (b) Coal contains mainly ___ . (c) The slow process of conversion of dead vegetation into coal is callled ___ . (d) The process of separation of different constituents from petroleum is called ___ . (e) The least polluting fuel for vehicles is ___ . (f) The burning of fossil fuels causes air ___ and also leads to global ___ .

Fill in the following blanks with suitable words : (a) Fossil fuels are _ , _ and _ . (b) Coal contains mainly _ . (c) The slow process of conversion of dead vegetation into coal is callled _ . (d) The process of separation of different constituents from petroleum is called _ . (e) The least polluting fuel for vehicles is _ . (f) The burning of fossil fuels causes air _ and also leads to global ___ .

Answer»

Fill in the following blanks with suitable words :

(a) Fossil fuels are ___ , ___ and ___ .

(b) Coal contains mainly ___ .

(d) The process of separation of different constituents from petroleum is called ___ .

(e) The least polluting fuel for vehicles is ___ .

(f) The burning of fossil fuels causes air ___ and also leads to global ___ .