Related Questions

Which one of the following nonmetals shows allotropy in the liquid state?
A Carbon
B Sulphur
C Phosphorous
D Bromine
Which of the following is not a Metalloid?
A Germanium
B Silicon
C Aluminum
D Tellurium
Which of the following elements is a metalloid?
A arsenic
B boron
C antimony
D All of the above
Metalloid is
A Highly electronegative in nature
B An element which exhibits the properties of both metal & non-metal
C An alloy
D All of the above
A mercury arc rectifier possesses ________ regulation characteristics
A straight line
B curved line
C exponential
D none of the above
In a certain population group, 57% of the people have characteristics, X and 63% have characteristics Y. If every person in the group has at lest what percent of the people have both X and Y?
A 20%
B 18%
C 12%
D 6%
The forms in which various metals and non metals occur in nature are called minerals. Which of the following is not a metallic ferrous mineral?
A Cassiterite
B Sphalerite
C Chalcopyrite
D Calcite
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
What type of fusion welding process is used for welding sheet metals of all engineering metals (except Cu, Ag) in automobile and air craft industries, pipe and tubing production?
A Thermit welding
B Electroslag welding
C Resistance welding
D Submerged arc Welding
Which of the following metals forms an amalgam with other metals?
A Tin
B Mercury
C Lead
D Zinc

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