Q1 of 22 Page 16

Name the two elements which are present both in CNG and petroleum. ( CBSE 2012)

Both CNG and petroleum are made up of hydrocarbons. Hydrocarbons are organic compounds that are made up only 2 elements, namely carbon and hydrogen. So, Carbon and hydrogen are the two elements present in both CNG and petroleum.

More from this chapter

All 22 →
2

Give an example each from daily life where the household waste can be effectively used and recycled respectively. ( CBSE 2009)

 3

“Narmada Bachao Aandolan” raised issues of how constructions of big dams create environmental problems. Discuss two such issue. ( CBSE 2010)

 4

Why are the Arabari forests of Bengal known to be a good example of conserved forest? ( CBSE 2012, 2007)

 5

“The prejudice against the traditional use of forest areas has no basis”. Explain.
( CBSE 2015)