_______________ is a donor impurity for semi-conductors ?
_______________ is a donor impurity for semi-conductors ?
A. Boron
B. Antimony
C. Gallium
D. None of these
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In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of _______________?
In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of _______________?A. Concrete
B. Wood
C. Steel
D. PorcelainMolten phthalic anhydride is stored in a/an _______________ vessel?
Molten phthalic anhydride is stored in a/an _______________ vessel?A. Aluminium
B. Nickel clad steel
C. Lead lined steel
D. Glass lined steelMost common stainless steel type 316, which is highly resistant to corrosion contains
Question: Most common stainless steel type 316, which is highly resistant to corrosion contains
[A].16-13% Cr 10-14% Ni and 2-3% Mo. [B].
20-22% Cr, and 8-10% Ni. [C].
2-4% Cr, 22% NI and 2-4% Mo. [D].
none of these. Answer: Option A
Explanation:
No answer description available for this question.
Perspex is nothing but
Question: Perspex is nothing but
[A].acrylic sheet [B].
an elastomer [C].
an alloy of lead and tin [D].
aluminium foil clad with bakelite Answer: Option A
Explanation:
No answer description available for this question.
_____________ is added in low carbon steel to raise its yield point?
_____________ is added in low carbon steel to raise its yield point?A. Sulphur
B. Phosphorous
C. Silicon
D. ManganeseWhich of the following is not an alloy of tin ?
Which of the following is not an alloy of tin ?A. White-bearing metal
B. Pewter type metal
C. Soft solder
D. German silver