Metals and Metallurgical Processes
Description: GATE | |
Number of Questions: 15 | |
Created by: Amit Pandey | |
Tags: GATE Metallurgical Engineering - MT |
Which of the following alloys does not contain lead?
Which of the following pairs of ‘alloy - its constituent’ is not correctly matched?
Which among the following statements is/are false?
A. Cuprite has a higher copper percentage than chalcocite. B. Chalcopyrite is called vitreous copper. C. Goethite is a hydroxide ore of iron.
The metal ingredients in Prince’s metal are ___________________.
Which of the following copper ores is commonly known as mountain blue?
Which of the following is not a sulphide ore?
Which of the following pair of ‘alloy - constituent metals’ is not correctly matched?
Identify the incorrect statement/s.
A. Mild steel contains 0.30% to 0.60% of carbon. B. Promoted iron is used as the catalyst in the Haber-Bosch process of NH3 production. C. In the quenching process of mild steel, water or oil is used.
Which one of the following iron ores is “fool’s gold”?
Which of the following are the ores of iron?
- Orpiment
- Marcasite
- Haematite
- Magnetite
Match the Column-I with the Column-II and select the correct answer using the codes given below.
Column - I | |
Column - II | |
A. Cassiterite | 1. PbS |
B. Galena | 2. CaMg(CO3)2 |
C. Limonite | 3. SnO2 |
D. Dolomite | 4. FeO(OH).nH2O |
Which of the following processes is/are related to lead refining?
P. Parkes process Q. Pattinson process R. Fire process
Which of the following statements are false?
- 18-Carat gold consists of Au 58%, Cu 12 – 28% and Ag 4 – 30%.
- Sterling-S alloy contains Ag 82.5% and Cu 17.5%.
- Naval brass is composed of Cu 60%, Zn 39.25% and Sn 0.75%.
- Dow’s metal consists of 93.8% Mg, 6% Al and 0.2% Mn.
Match the Column-I with Column-II.
Alloys | |
Major constituents | |
A. Pewter | 1. Al |
B. Duralumin | 2. Bi |
C. Dow metal | 3. Mg |
D. Rose metal | 4. Pb |
5. Sn |
Match the List-I with List-II and select the correct answer.
Metal alloys | |
Chief constituent | |
P. Type metal | 1. Cu |
Q. Gun metal | 2. Bi |
R. Pewter | 3. Pb |
S. Rose metal | 4. Sn |