Question : Which of the following metals is known to pollute the air of big cities with a large number of vehicles?
A. Copper
B. Iron
C. Mercury
D. Lead
Question Listed : Lead, Metals,
Question : The metal compound commonly found in Sindoor or kumkum is based on
A. zinc
B. lead
C. copper
D. tin
Question Listed : Lead, Metals,
Question : Solder metal is an alloy of
A. copper and tin
B. copper and zinc
C. lead and antimony
D. lead and tin
Question Listed : Lead, Tin, Metals,
Question : Plumbism is a condition due to the poisoning effect of -
A. uranium
B. copper
C. mercury
D. lead
Question Listed : Lead, Metals,
Question : The best and the poorest conductors of heat are respectively
A. copper (cu) and gold (Au)
B. silver (Ag) and gold (Au)
C. copper (Cu) and aluminium (Al)
D. silver (Ag) and lead (Pb)
Question Listed : Silver, Ag, Lead, Pb, Heat, Temperature,
Question : Which metal pollute the air of a big city?
A. Cadmium
B. Lead
C. Chromium
D. Copper
Question Listed : Lead, Elements, Metals,
Question : The age of most ancient geological formations is estimated by
A. Uranium - lead method
B. C14?method
C. Potassium - argon method
D. Ra - Si method
Question Listed : Uranium, Lead Method, Nuclear Science,