DAE CH 213 Chapter 13 MCQs

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DAE | CH-213

APPLIED CHEMISTRY

CHAPTER : 13

DIPLOMA OF ASSOCIATE ENGINEERING

EXAM PRAPARATION

COMMON WITH:

APPLIED CHEMISTRY

MULTIPLE CHOICE QUESTION

Chapter:13 (Metallurgy)

Question 1:

The science of the extraction, working and the use of metals ad their alloys is called

pulverisation metallurgy electroplating alloy formation

Question 2:

The science of extracting a pure metal by removing the undesirable impurities from its ore economically with the application of special techniques is called

pulverisation metallurgy electroplating alloy formation

Question 3:

is usually carried out in the ball mill or paddle mill crusher.

pulverisation metallurgy electroplating alloy formation

Question 4:

The heavy ores like haematite are concentrated by the

gravity concentration Wilfley tables froth floatation process all three

Question 5:

Cyclone separator is used in the

gravity concentration Wilfley tables froth floatation process all three

Question 6:

The process in which ores either alone or with addition of other minerals are heated at temperatures below their melting points is called

concentrates tailings roasting calcination

Question 7:

Can absorb many gases like hydrogen, nitrogen and carbon monoxide

water plastic aluminium iron

Question 8:

Iron reacts chmically with steam to form

FeO Fe\(_2\)O\(_3\) Fe\(_3\)O\(_4\) all these

Question 9:

Iron reacts with concentrated sulphuric acid to liberate gas

CO\(_2\) SO\(_2\) SO\(_3\) no one

Question 10:

Copper does not react with

acid base salt all three

Question 11:

Aluminium reacts with concentrated sulphuric acid to liberate gas

CO\(_2\) SO\(_2\) SO\(_3\) no one

Question 12:

The siderite ore of iron is

\({Fe_2}{O_3}\) \(FeS_2\) \(FeCO_3\) all three

Question 13:

The cuprite ore of copper is

\({Cu_2}O\) \({Cu_2}S.{Fe_2}{S_3}\) \(CuO\) all three

Question 14:

The cryolite ore of aluminium is

\({Al_2}{O_3}\) \({Na_3}{AlF_6}\) \({Al_2}{O_3}2{H_2}O\) all three

Question 15:

The metallurgy of iron is carried out in

blast furnace rotary furnace open hearth furnace all three

Question 16:

The, is 110 to 150 feet high and 20 to 25 feet wide

blast furnace rotary furnace open hearth furnace all three

Question 17:

The blast furnace can be divided in zones according to chemical reactions

1 2 3 4

Question 18:

The temperature of the combustion zone in the blast furnace is

\({1500 to 1600^0}C\) \({600 to 900^0}C\) \({300 to 600^0}C\) \({900 to 1200^0}C\)

Question 19:

The basic difference between cast iron, wrought iron and steel depends upon the %age of

lime silica carbon phosphorus

Question 20:

These are undesirable rocky and earthy impurities mixed with the ore

gangue ore flux lag

Quiz Results

Total Questions:

Correct Answers:

Incorrect Answers:

Percentage:

NOTE

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INSTRUCTOR

MUHAMMAD BIN JAMEEL

BSC ENGG. CIVIL