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Chargeman
OFB Chargeman Mechanical 2014
141

OFB Chargeman Mechanical Question Paper - 2014 with Answer Key

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

Hot piercing

Extrusion

Cold peening

Cold heading

Answer is:

Cold heading

Explanation:

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

OFB Chargeman Mechanical Question Paper - 2014 with Answer Key

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Related OFB Chargeman Mechanical Question Paper - 2014 with Answer Key

142) Raw material for all iron and steel products is

Cast iron

Pig iron

Wrought iron

Steel

Answer is:

Pig iron

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

Cementite

Pearlite

Martensitic

Austenitic

Answer is:

Cementite

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

Ferrite mainly

Pearlite mainly

Ferrite & pearlite

Pearlite & cementite

Answer is:

Pearlite & cementite

145) Solder is an alloy of

Copper & Tin

Lead & Tin

Lead & Copper

Copper & aluminium

Answer is:

Lead & Tin

OFB Chargeman Mechanical Question Paper - 2014 with Answer Key

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