1861. For spinning viscose rayon, the extrusion spinnerettes are made of
Platinum or gold alloys
High carbon steel
Aluminium
Nickel
✅ The correct answer is option A.
Chemical Engineering
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1862. Chromel (Nichrome) is an alloy of
Chromium and molybdenum
Nickel and chromium
Molybdenum and nickel
Chromium and aluminium
✅ The correct answer is option B.
1863. Which of the following pairs of elements may form an alloy?
Iron & carbon
Iron & mercury
Platinum & mercury
None of these
✅ The correct answer is option A.
1864. DDT is shipped in
Stainless steel containers
Paper bags
Fibre drums
Either B or C
✅ The correct answer is option D.
1865. Cast iron detachable joint is used in __________ pipes.
Steel
Cast iron
Asbestos cement
Reinforced cement concrete
✅ The correct answer is option A.
1866. Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with
Karbate
Lead or glass
Fireclay bricks
PVC
✅ The correct answer is option B.
1867. Which of the following is not an alloy of nickel and chromium?
Inconel
Hastealloy
Nimonic alloys
Duralumin
✅ The correct answer is option D.
1868. Which of the following has no effect on the carbide forming tendency in steels?
Molybdenum
Phosphorus
Chromium
Vanadium
✅ The correct answer is option B.
1869. Lead
Is the hardest metal in common use
Is the lightest metal in common use
Can not be scratched by finger nails
Can not be work hardened
✅ The correct answer is option D.
1870. Among the tin containing alloys, __________ consumes the maximum amount of tin.
Solder
White metal
Pewter matal
Bronzes
✅ The correct answer is option A.