Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
2.7k views
in Chemistry by (51.1k points)
closed by

State whether the following statements are true or false: 

(a) Coke is almost pure from carbon. 

(b) Coal tar is a mixture of various substances. 

(c) Kerosene is not a fossil fuel. 

(d) CNG is more polluting than petrol. 

(e) Fossil fuels can be made in the laboratory.

1 Answer

+1 vote
by (42.0k points)
selected by
 
Best answer

(a) This statement is True. 

It is a tough, porous and black substance. It is almost pure form of carbon.

(b) This statement is True. 

Coal tar is the product of coal which is a thick black liquid having an unpleasant smell. It is a mixture of about 200 substances.

(c) This statement is False. 

Kerosene is a fossil fuel. It is used as a fuel for stoves, lamps and for jet aircrafts.

(d) This statement is False. 

CNG is less polluting than petrol. It is a clean burning fuel. It produces 45% less hydrocarbons than petrol.

(e) This statement is False. 

The formation of fossil fuels is a very slow process. These are formed under very high pressure and high temperature. The conditions for their formation cannot be created in the laboratory.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...