Material Science And Metallurgy (3131904) MCQs

MCQs of Metallic Materials

Showing 11 to 20 out of 32 Questions
11.

The aluminium alloy made by melting aluminium with 2 to 10% magnesium and 1.75% copper is called

(a)

duralumin

(b)

Y-alloy

(c)

magnalium

(d)

hindalium

Answer:

Option (c)

12.

Y-alloy contains

(a)

3.5 to 4.5% copper, 0.4 to 0.7% magnesium, 0.4 to 0.7% manganese and rest aluminium

(b)

3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium

(c)

4 to 4.5% magnesium, 3 to 4% copper and rest aluminium

(d)

5 to 6% tin, 2 to 3% copper and rest aluminium

Answer:

Option (b)

13.

Babbit metal is a

(a)

lead-base alloy

(b)

copper-base alloy

(c)

tin-base alloy

(d)

cadmium-base alloy

Answer:

Option (c)

14.

Babbit metal contains

(a)

50% tin and 50% antimony

(b)

66% tin, 30% copper and 4% antimony

(c)

88% tin, 4% copper and 8% antimony

(d)

92% tin, 6% copper and 2% antimony

Answer:

Option (c)

15.

Inconel contains

(a)

65% nickel, 15% chromium and 20% iron

(b)

68% nickel, 29% copper and 3% other constituents

(c)

80% nickel and 20% chromium

(d)

80% nickel, 14% chromium and 6% iron

Answer:

Option (d)

16.

Monel metal is an alloy of

(a)

nickel and copper

(b)

nickel and chromium

(c)

nickel, chromium and iron

(d)

copper and chromium

Answer:

Option (a)

17.

Monel metal contains

(a)

65% nickel, 15% chromium and 20% iron

(b)

68% nickel, 29% copper and 3% other constituents

(c)

80% nickel and 20% chromium

(d)

80% nickel, 14% chromium and 6% iron

Answer:

Option (b)

18.

The metal suitable for bearings subjected to heavy loads, is

(a)

silicon bronze

(b)

white metal

(c)

monel metal

(d)

phosphor bronze

Answer:

Option (b)

19.

German silver contains

(a)

1% silver

(b)

2% silver

(c)

5% silver

(d)

no silver

Answer:

Option (d)

20.

German silver contains

(a)

70% copper and 30% zinc

(b)

60% copper and 40% zinc

(c)

59% copper, 40% zinc and 1% tin

(d)

60.45% copper, 35.2% zinc and 5.35% nickel

Answer:

Option (d)

Showing 11 to 20 out of 32 Questions