Materials and Construction MCQs with answers Page - 7

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Q. Alpha iron is stable __________ °C.

  • (A) Upto 910
  • (B) Between 910 & 1403
  • (C) Above 1403
  • (D) Above 1800

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Q. __________ iron is produced, when molten pig iron is allowed to cool gradually.

  • (A) White cast
  • (B) Grey cast
  • (C) Wrought
  • (D) None of these

A

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Q. Which of the following is not a nickel based alloy?

  • (A) Inconel
  • (B) Hastelloys
  • (C) Nimonics
  • (D) Babbit metal

A

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Q. Presence of even 0.005% of __________ in copper makes it highly brittle, rendering it useless for wire-drawing.

  • (A) Oxygen
  • (B) Arsenic
  • (C) Antimony
  • (D) Bismuth

A

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Q. Maximum consumption of lead is in the manufacture of

  • (A) Storage batteries
  • (B) Solder alloys
  • (C) Electric cable sheathing
  • (D) Lead lined vessels

A

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Q. Coke oven walls are lined with __________ bricks.

  • (A) Fire clay
  • (B) Low thermal conductivity
  • (C) Silica
  • (D) Tar-dolomite

A

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Q. Babbit metal (used for making bearings) comprises of

  • (A) Saw dust and iron dust mixture
  • (B) Mainly tin (85%) and lead
  • (C) Copper and aluminium
  • (D) Zinc and aluminium

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Q. The chlorinator used in the manufacture of DDT is made of

  • (A) Glass
  • (B) Glass lined steel
  • (C) Teflon
  • (D) Bakelite

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Q. Common house hold glass (i.e., soda-lime glass) is a/an __________ material.

  • (A) Fully crystalline
  • (B) Partly crystalline
  • (C) Amorphous
  • (D) None of these

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Q. In SO3 absorber (Contact Process), packing material used is of

  • (A) Cast iron
  • (B) Chemical stoneware
  • (C) Karbate
  • (D) Mild steel

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