1846. SO₃ is absorbed using H₂SO₄ in a
Cast iron packed tower
Stainless steel plate tower
Packed steel tower lined with acid proof bricks
None of these
✅ The correct answer is option C.
1848. The process of coating steel sheets by zinc to improve its corrosion resistance is called
Calorising
Galvanising
Zincification
Tempering
✅ The correct answer is option B.
1850. Brass container is suitable for storing
Aqueous ammonia
Beer
H₂SO₄(95%)
Phosphoric acid (95%)
✅ The correct answer is option B.
1853. A material is able to retain the deformation permanently by virtue of its
Elasticity
Plasticity
Ductility
Malleability
✅ The correct answer is option B.
1856. Cast irons are generally specified by their
Carbon content
Tensile strength
Hardness
Manufacturing proces
✅ The correct answer is option B.
1859. The most resistant material to alkaline corrosion is
Duriron
Nickel
Aluminium
Karbate
✅ The correct answer is option B.
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.
1865. Cast iron detachable joint is used in __________ pipes.
Steel
Cast iron
Asbestos cement
Reinforced cement concrete
✅ The correct answer is option A.
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.
1795. A hardness depth of about 3 mm can be achieved by induction hardness in __________ seconds.
5
100
250
500
✅ The correct answer is option A.