Correct Answer : London
The Great Smog of London, or Great Smog of 1952, was a severe air pollution event that affected London, England, in December 1952.
Correct Answer : high temperature
Correct Answer : Butane
Butane, a highly flammable, colorless, easily liquefied gas used in gas-type lighters, cigarette lighters and butane torches.
Correct Answer : Calcium phosphate
Correct Answer : Zinc
Correct Answer : Vitamin B2-Riboflavin
Correct Answer : Silica
Silica is the major ingredient in virtually all types of glass including containers, flat glass, lighting glass, tableware, TV tubes and screens, decorative glass, fibreglass, optical glass and vacuum flasks.
Correct Answer : Tetraethyl Lead
Correct Answer : Pitchblende
Thus, radium is found in tiny quantities in the uranium ore uraninite and various other uranium minerals, and in even tinier quantities in thorium minerals. One ton of pitchblende typically yields about one seventh of a gram of radium
Correct Answer : Bromine
