- (A) in which atoms align themselves in a geometric pattern upon solidification
- (B) in which there is no definite atomic structure and atoms exist in a random pattern just as in a liquid
- (C) which is not attacked by phosphorous
- (D) which emits fumes on melting
- (E) none of the above
Mechanical Engineering Mcqs
- (A) zinc
- (B) lead
- (C) silver
- (D) glass
- (E) brass
- (A) electroplating
- (B) cyaniding
- (C) induction hardening
- (D) nitriding
- (E) flame hardening
- (A) improves wear resistance, cutting ability and toughness
- (B) refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties
- (C) improves cutting ability and reduces hardenability
- (D) gives ductility, toughness, tensile strength and anticorrosion properties
- (E) makes steel hard
- (A) brass
- (B) cast iron
- (C) aluminium
- (D) steel
- (E) non-ferrous alloys.
- (A) mild steel
- (B) alloy steel
- (C) high carbon
- (D) tungsten steel
- (E) cast iron steel
- (A) providing corrosion resistance
- (B) improving machining properties
- (C) providing high strength at elevated temperatures
- (D) raising the elastic limit
- (E) improving the resilience and ductility
- (A) 0.02%
- (B) 0.3%
- (C) 0.63%
- (D) 0.8%
- (E) 1.2%.
- (A) nickel, copper
- (B) nickel, molybdenum
- (C) zinc, tin, lead
- (D) nickel, lead and tin
- (E) none of the above
- (A) silver metal
- (B) duralumin
- (C) Hastelloy
- (D) monel metal
- (E) invar
