Materials and Construction MCQs

Question 1

Atmospheric corrosion of metals result from their

Accepted Answer

Slow oxidation

Answer

Fast oxidation

Answer

Fast hydration

Answer

Slow dehydration

Question 2

Condenser tubes are not made of

Accepted Answer

Wood metal

Answer

Cartridge brass

Answer

Muntz brass

Answer

Aluminium brass alloy

Question 3

Which of the following is the most prone to atmospheric corrosion?

Accepted Answer

Iron

Answer

Silver

Answer

Tin

Answer

Copper

Question 4

Bronze is an alloy of copper and

Accepted Answer

Tin

Answer

Lead

Answer

Nickel

Answer

Zinc

Question 5

Material of construction of pipe generally used for conveying water in India is

Accepted Answer

Cast iron

Answer

Stainless steel

Answer

Wrought iron

Answer

Lead lined steel

Question 6

Centrifugal pump made of pyrex or glass can't be used to pump

Accepted Answer

Alkaline solutions

Answer

Milk and fruit juices

Answer

Dilute H 2 SO 4 at room temperature

Answer

Brine

Question 7

Babbit metal used for making bearings should have

Accepted Answer

High co-efficient of friction between journal and bearing

Answer

Ability to retain lubricant on its surface

Answer

Low co-efficient of friction between journal and bearing

Answer

Both B & C

Question 8

Tank furnace used for melting of glass is made of

Accepted Answer

Refractory blocks

Answer

Mild steel

Answer

Cast iron

Answer

Stainless steel

Question 9

The hardest material just prior to diamond in Mhos scale is

Accepted Answer

Corrundum

Answer

Topax

Answer

Carborundum

Answer

Calcite