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[#61] Maximum permissible sulphur content in steel is __________ percent.

(A) 0.015

(B) 0.055

(C) 0.505

(D) 0.805

Correct Answer

(B) 0.055

[#62] Carbon content in steel is __________ percent.

(A) 0.1-2

(B) 4-6

(C) 2-4

(D) 0.001-0.01

Correct Answer

(A) 0.1-2

[#63] Carbon content in plain carbon steel is __________ percent.

(A) 0.1 to 0.15

(B) 0.35 to 0.45

(C) 0.65 to 0.80

(D) 0.85 to 1.2

Correct Answer

(B) 0.35 to 0.45

[#64] Constantan used in thermocouples is an alloy of

(A) Iron & copper

(B) Copper & aluminium

(C) Lead & tin

(D) None of these

Correct Answer

(D) None of these

[#65] __________ does not contain tin as an alloying material.

(A) Brass

(B) Pewter

(C) Solder

(D) Babbit metal

Correct Answer

(A) Brass