1926. Which of the following is a light alloy?
Monel metal
Dow metal
German silver
Babbit metal
✅ The correct answer is option B.
1929. Aluminium storage vessel can be used to store
Aqua regia
Ferrous sulphate
Hydrochloric acid (10%)
None of these
✅ The correct answer is option D.
1932. Tempering of steel is done to make it
Brittle
Hard
Rollable
Soft
✅ The correct answer is option D.
1935. The damage/deterioration of metals by the __________ action of fluids is called ‘erosion’.
Abrasive
Corrosive
Both A & B
Neither A nor B
✅ The correct answer is option A.
1938. Mixing vessel used for the chlorination of methane to produce methyl chloride is made of
Copper
Cast iron
Aluminium
High carbon steel
✅ The correct answer is option B.
1941. Aqueous nitric acid is stored in
Steel drum
Stainless steel vessel
Cast iron vessel lined with acid-proof masonry brick
Cast iron vessel
✅ The correct answer is option B.
1944. The high expansion metal normally used in the bimetallic thermometer is __________ temperature measurement.
Brass for low
Nickel alloys for high
Both A & B
Aluminium for all
✅ The correct answer is option C.
1946. Nickel made/clad equipments are suitable for handling
Ammonia (both aqueous & anhydrous)
Fruit juices, milk & its products and caustic soda solution
Nitric acid & hydrochloric acid (conc)
Sulphuric acid (conc)
✅ The correct answer is option B.
1948. Which of the following mechanical properties of a material is most structure insensitive?
Modulus of elasticity (young
Toughness
Percentage reduction of area
Tensile strength
✅ The correct answer is option A.
1950. __________ steel is widely used for the manufacture of motor car crankshafts.
Silicon
Nickel
Chrome
High speed
✅ The correct answer is option C.