Related Questions

Gold is 19 times as heavy as water and Copper is 9 times as heavy as water. Calculate the ratio in which these two metals should be mixed so that the mixture is 15 times as heavy as water.
A 40
B 41
C 42
D 43
Which of the toxic heavy metals is found in modern tannery industries ?
A Nickel
B Zinc
C Chromium
D Lead
According to a survey of business firms in a certain city, 750 firms offer their employees health insurance , 640 offer dental insurance and 280 offer health insurance and dental insurance. How many firms offer their employees health insurance or dental
A 920
B 1,100
C 1,110
D 1,030
'Heavy water' is termed as 'heavy' because it is
A Denser than water
B An oxide of deuterium
C A heavy liquid
D An oxide of heavier isotope of oxygen
In a refinery petroleum crude is fractionated into gas fraction, light ends, intermediate distillates, heavy distillates, residues and by products. The group of products including gas oil, diesel oil and heavy fuel oil belongs to the fraction
A Heavy distillates
B Intermediate distillates
C Light ends
D Residues
Heavy metals got their name because compared to other atoms they have
A Higher densities
B Higher atomic masses
C Higher atomic numbers
D Higher atomic radii
Which of the following metals forms an amalgam with other metals?
A Tin
B Mercury
C Lead
D Zinc
Ceramic nuclear metals compared to solid nuclear metals have
A higher melting points
B low strength at high temperature
C more chances of radiation damage
D poorer corrosion resistance
There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant?
A Mercury
B Arsenic
C Aluminium
D Lead
Which of the following metals form an amalgam with other metals ?
A Lead
B Tin
C Zinc
D Mercury

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