GATE Metallurgical Engineering Previous Year Papers Pdf - 1

Question: 1

Which of the following has the highest thermal diffusivity?

(A) Iron

(B) Lead

(C) Concrete

(D) Wood

Question: 2

Of the polymer type, which one is the most important commercially?

(A) Synthetic fibres

(B) Elastmers

(C) Thermosets

(D) Thermoplastics

Question: 3

Which one of the following compounds becomes a plastic and formable material when mixed with suitable proportions of water?

(A) Aluminium oxide

(B) Silicon dioxide

(C) Hydrogen oxide

(D) Hydrous aluminium silicate

Question: 4

Which of the following materials has the highest thermal coefficient of expansion?

(A) Aluminium

(B) Nylon

(C) Brass

(D) Fused silica

Question: 5

Which is the only metal that exists in liquid state at room temperature?

(A) Mercury

(B) Lithium

(C) Strontium

(D) Sodium