Smog usually occurs over cities which
...Smog usually occurs over cities which
burn a lot of fossil fuels
have very few plants
are surrounded by water
are overpopulated
Correct answer is A
No explanation has been provided for this answer.
Which of the following equipment is not used to detect radioactivity? ...
Benzene reacts with hydrogen in the presence of nickel catalyst at 180ºC to give? ...
For a given solute, the concentration of its saturated solution in different solvents are ...
Which of the following substances is not a salt? ...
What is the concentration of a solution containing 2g of NaOH in 100cm3 of solution? [Na = 23, ...
As the difference in electronegativity between bonded atoms increases, polarity of the bond? ...