PPSC Chemistry Part III Inorganic Chemistry Online Test With Answers

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PPSC Chemistry Part III Inorganic Chemistry Online Test

Sr. # Questions Answers Choice
1 Which of the following is not an ore of Cr. Chrome iron Nicollite Crocisite Chrome ochre
2 Chromium is found in nature in the the form of. Oxides Silicates Borates Sulphides
3 The process of heating to redness and then slow cooling in known as Tempering Annealing <blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">Quenching</blockquote> Hardening
4 Which of the following is not a proper use of Ni. It is used as catalyst It is used in alloy formation It is used in the preparation of Monel metal It is attached by alkalis
5 Which of the following is not a property of Ni. it is a soft silvery white metal It is malleable and ductile It is highly magnetic It has high electrical and thermal conductivities
6 Which of the following metals form volatile carboyl with CO below 80 oC Cu Fe CO Ni
7 Which of the following process is used for the conversion of matte is to nickel. Orford process Mond's process Electrolytio process All
8 Monel metal is a alloy of Ni which constrains Ni uptown 50% 60% 70% 80%
9 In smelting process the ore is mixed with Silica Coke Limestone All
10 What % if nickel is present in the major ore Pentlandite. 22% 18% 14% 10%
11 Which of the following is not an ore of nickel. Pentalandite Siderite Garnierite Nicollite
12 In nature nickel is found in the form of. Sulphides Silicates Arsenides All
13 Stainless steel consists of which elements. Fe only Cr only Fe and Ni Fe ,Ni and Cr
14 Which of the following statement is not true regarding Open Hearth process. No iron is lost The process is economical and simple Steel obtained is of high quality Scrap iron cannot be used in this process.
15 Iron which contains up to 1% carbon is called. Steel Cast iron Wrought iron Pig iron
16 How pig iron is usually obtained from iron pyrite Limonite Hematite Siderite
17 Which is the purest form of iron. Pig iron Cast iron Wrought iron Steel
18 How many varieties of commercial iron are known. 1 2 4 3
19 Which of the following is not an ore of iron. Haematite Magnetite Siderite Monazite
20 Which is the second most abundant element occurring the earth crust. Iron Cu Cr Ni
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