A. Kudremukh
B. Kolar
C. Khetri
D. Ramagundam
Related Mcqs:
- The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : Cp of copper is 23 J K-1mole-1) ?
A. 2300 J
B. 4600 J
C. 230 J
D. 2.3 × 106 J - Which of the following is not an ore of copper ?
A. Cryolite
B. Azurite
C. Chalcopyrite
D. Malachite - Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process ?
A. Galvanising
B. Tinning
C. Sherardizing
D. None of these - A 2 kg object weighs 1.8 kgf on a spring balance. The value of ‘g’ at that location in m/sec2 is___________________?
A. 8.82
B. 9.81
C. 10.88
D. 0.95 - The elastic strain in copper is due to the__________________?
A. Motion of dislocations
B. Stretching of atomic bonds
C. Breakage of atomic bonds
D. None of the above - Alloys having more than 80% copper are generally more______________________?
A. Abrasion resistant
B. Corrosion resistant
C. Prone to season cracking
D. Machinable - Steam condenser tubes are made of admiralty brass, in which percentage of zinc & copper are _______________ respectively ?
A. 70 & 30
B. 30 & 70
C. 50 & 50
D. 90 & 10 - In case of brasses, with decreasing zinc percentage and increasing copper percentage, its _____________ increases ?
A. Percentage elongation
B. Brinell hardness
C. Tensile strength
D. All A, B & C - Common salt is produced from sea water in India generally by the ________________ method?
A. Freeze drying
B. Solar evaporation
C. Electrolytic
D. None of these - Which of the following metals cannot be hot worked at room temperature ?
A. Zinc
B. Nickel
C. Lead
D. Tin
