Exists in three allotropic forms
Can not be welded
Is used in oceanographic and space exploration applications
None of these
✅ The correct answer is option C.
Engineering
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1722. Carbon is present in the combined form (carbide) in case of
Pig iron
Steel
Ferroalloys
All of the above
✅ The correct answer is option D.
1723. A chemical change takes place when iron
Rusts
Melts
Is heated
None of these
✅ The correct answer is option A.
1724. Perspex is nothing but
Acrylic sheet
An elastomer
An alloy of lead and tin
Aluminium foil clad with bakelite
✅ The correct answer is option A.
1725. Dilute sulphuric acid is transported in __________ pipes.
Mild steel
Lead
Copper
Special alloys
✅ The correct answer is option B.
1726. The preferred material of construction for storage tanks for 98% sulphuric acid is
Aluminium
Lead
Stainless steel 316
Mild steel
✅ The correct answer is option B.
1727. Ammonium chloride solution is stored/ treated in __________ vessels/pipes.
Plain carbon steel
Stainless steel
Rubber or durmet-20 lined
Lead
✅ The correct answer is option C.
1728. __________ does not contain tin as an alloying material.
Brass
Pewter
Solder
Babbit metal
✅ The correct answer is option A.
1729. High degree of toughness is a must for
High speed steel
Shock resisting steel
Cold work tool steel
None of these
✅ The correct answer is option B.
1730. The melleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the miximum malleability?
Lead
Copper
Aluminium
Wrought iron
✅ The correct answer is option A.