Which of the following substances is mainly responsible f...
Which of the following substances is mainly responsible for the depletion of the ozone layer?
Oxgyen
Chlorofluorocarbon
Carbon (ll) oxide
Nitrogen (ll) oxide
Correct answer is B
Ozone depletion occurs when chlorofluorocarbons (CFCs) and halons—gases formerly found in aerosol spray cans and refrigerants—are released into the atmosphere
If a solid has a low melting point and dissolves readily in benzene, it would probably...
If an element has the electronic configuration 1s 2 2s2 2p3 3s2 3p4, it is...
Which of the following fraction is used as raw material for the cracking process? ...
Given that the order of reactivity of four metals is P>Q>R>S, which of the following reacti...