OFB Chargeman Mechanical Question Paper - 2014 with Answer Key

OFB Chargeman Mechanical Question Paper - 2014 with Answer Key

141) The process extensively used for making bolts and nuts is

Answer is:

Cold heading

Explanation:

The process extensively used for making bolts and nuts is cold heading.

142) Raw material for all iron and steel products is

Answer is:

Pig iron

143) Steel having combination of 6.67% carbon and 93.33% iron is known as

Answer is:

Cementite

144) When steel containing more than 0.8% carbon is cooled slowly below the lower critical point, it contains

Answer is:

Pearlite & cementite

145) Solder is an alloy of

Answer is:

Lead & Tin