Metallurgy MCQ Practice Bits
20 The gas which is liberated during electrolysis of sodium chloride, is
1. chlorine
2. oxygen
3. nitrogen
4. hydrogen
Click here to check your answer
19 This group of elements are called chalcogens
1. 14th group
2. 16th group
3. 15th group
4. 17th group
18 The formula of carnallite is
1. MgCo3
2. MgSo4.7H2o
3. Kcl Mgcl2.6H2o
4. Caco3.MgCo3
17 The purpose of smelting an ore is to .......... it
1. oxidise
2. reduce
3. neutralise
4. none of these
16 The reducing agent in thermite process is ......
1. Al
2. Mg
3. Fe
4. Si
Click here to check your answer
15 The most abundant metal in the earth's crust is .......
1. silver
2. aluminium
3. zinc
4. iron
14 The metal that occurs in the native form is .......
1. Pb
2. Au
3. Fe
4. Hg
13 Galena is an ore of ......
1. Zn
2. Pb
3. Hg
4. Al
12 Forth floatation is a method used for the purification of ....... ore
1. sulphide
2. oxide
3. carbonate
4. nitrate
11 The oil used in the froth floatation process is
1. kerosene oil
2. pine oil
3. coconut oil
4. olive oil
Click here to check your answer