Engineering Materials Objective Questions with Answers – Set 17

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All questions answers in the last paragraph

Q1. Carbon steel is

(A) Made by adding carbon in steel
(B) Refined from cast iron
(C) An alloy of iron and carbon with varying quantities of phosphorus and sulphur
(D) Extensively used for making cutting tools

Q2. Tungsten when added to steel __ the critical temperature.

(A) Does not effect
(B) Lowers
(C) Raises
(D) None of these

Q3. Basic constituents of Monel metal are

(A) Nickel, copper
(B) Nickel, molybdenum
(C) Zinc, tin, lead
(D) Nickel, lead and tin

Q4. Cyaniding is the process of

(A) Dipping steel in cyanide bath
(B) Reacting steel surface with cyanide salts
(C) Adding carbon and nitrogen by heat treatment of steel to increase its surface hardness
(D) Obtaining cyanide salts

Q5. The hardness of steel increases if it contains

(A) Austenite
(B) Martensite
(C) Pearlite
(D) Cementite

Q6. Monel metal is an alloy of

(A) Nickel and copper
(B) Nickel and chromium
(C) Nickel, Chromium and iron
(D) Copper and chromium

Q7. Corrosion resistance of steel is increased by addition of

(A) Chromium and nickel
(B) Sulphur, phosphorus, lead
(C) Vanadium, aluminium
(D) Tungsten, molybdenum, vanadium, chromium

Q8. An alloy of copper, tin and zinc is known as

(A) Brass
(B) Bronze
(C) Gun metal
(D) Muntz metal

Q9. Shock resistance of steel is increased by adding

(A) Nickel
(B) Chromium
(C) Nickel and chromium
(D) Sulphur, lead and phosphorus

Q10. High carbon steel carries carbon percentage

(A) 0.1 to 0.3%
(B) 0.3 to 0.6%
(C) 0.6 to 0.8%
(D) 0.8 to 1.5%

Q11. An important property of malleable cast iron in comparison to grey cast iron is the high

(A) Compressive strength
(B) Ductility
(C) Carbon content
(D) Hardness

Q12. The material widely used for making pendulums of clocks is

(A) Stainless steel
(B) High speed steel
(C) Heat resisting steel
(D) Nickel steel

Q13. German silver is an alloy of

(A) Silver and some impurities
(B) Refined silver
(C) Nickel, Copper and zinc
(D) Nickel and copper

Q14. Induction hardening is the process of

(A) Hardening surface of work-piece to obtain hard and wear resistant surface
(B) Heating and cooling rapidly
(C) Increasing hardness throughout
(D) Inducing hardness by continuous process

Q15. The hardness is the property of a material due to which it

(A) Can be drawn into wires
(B) Breaks with little permanent distortion
(C) Can cut another metal
(D) Can be rolled or hammered into thin sheets

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All questions answers


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