Materials having ________________ lattice structure are usually the most ductile ?

Question: Cold cracking in the heat affected zone of a high strength steel weld can take place because of the
[A].

retained austenite.

[B].

martensite formation.

[C].

relatively high sulphur content in the base metal.

[D].

sufficient hydrogen present in the welding arc.

Answer: Option B

Explanation:

No answer description available for this question.

Question: __________ is used as a material of construction for the blade of power saw.
[A].

Wrought iron

[B].

Stainless steel

[C].

Mild steel

[D].

High speed steel

Answer: Option D

Explanation:

No answer description available for this question.

Question: Enzymes belong to the category of
[A].

proteins

[B].

carbohydrates

[C].

vitamins

[D].

fats

Answer: Option A

Explanation:

No answer description available for this question.

Question: Overheating of satellites during re-entry to earth is controlled by
[A].

thick insulation.

[B].

ceramic lining.

[C].

cooling by flow of air over the surface.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.