A. Quartz
B. Gypsum
C. Feldspar
D. Fluorite
Related Mcqs:
- The softest material just next to talc in the Mhos scale is_________________?
A. Quartz
B. Gypsum
C. Feldspar
D. Fluorite - The hardest material just prior to diamond in Mhos scale is_________________?
A. Topaz
B. Carborundum
C. Corundum
D. Calcite - The softest material in Mho’s scale (for measuring hardness) is________________?
A. Talc
B. Gypsum
C. Rubber
D. None of these - Which of the following is the softest material ?
A. Quartz
B. Calcite
C. Corundum
D. Fluorite - The hardest material just prior to diamond in Mho’s scale is___________________?
A. Topaz
B. Carborundum
C. Corundum
D. Calcite - Brinell Hardness Number (BHN) for talc is approximately in the range of____________________?
A. 1-5
B. 20-30
C. 100 -150
D. 200 – 250 - Failure of a material is termed as fatigue failure, if it fails below the yield point. The resistance to fatigue failure of a material is measured by the__________________?
A. Ultimate tensile strength (U.T.S.)
B. Endurance limit
C. Elastic limit
D. None of these - The range of Mho’s scale of hardness is from________________?
A. 1 to 15
B. 1 to 8
C. 1 to10
D. 0 to 10 - Bog iron used for the adsorption of H2S from coke oven gas is___________________?
A. An intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide)
B. Iron impregnated with resin (usually Bakelite)
C. Carbon free iron
D. None of these - Pure nickel is___________________?
A. Ferromagnetic above its curie point (i.e., 415°C)
B. Having h.c.p. crystal lattice
C. Ferromagnetic at room temperature
D. Not resistant to oxidation at high temperature
