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 Un-like s -block elements d-block elements form which compounds as well ionic compounds Co valent compound Co ordinate compounds None of above
2 Ten elements Sc (Z = 21) to Zn (Z = 30) fill their 4s orbitals first and then 3d orbitals are called elements. of. 3 d series. 4d Series 5d Series None of above
3 Elements in which differentiating electron enters the (n-1) the d-orbitals of the (n-1) the main shell are called elements. s- block p-block d-block f-block
4 Carbon in wrought iron is present as Silicon carbide Iron carbide or comentite Graphite Partly as iron carbide and partly as graphite
5 Stainless steel contains. Fe + Cr+ Ni Fe + Ni + Cu Fe + Cr+ Cu Cu + C + Ni
6 If Steel is heated to a temperature well below red heat and to then cooled slowly the process is called. Annealing Quenching Tempering Nitriding
7 In extraction of iron, the furnace charge consists of iron ore, coke and limestone. The function of limestone is to act as. An oxidation agent A reducing agent Flux Slag
8 Molten iron withdrawn from the blast furnace is called. Wrought iron Pig iron Bessemer iron Stainless steel
9 In the forth floatation process for the purification of ores, the ore particles float because. They are light Their surface is not easily vetted by water They bear electrostatic charge They are insoluble
10 The number used in cancer therapy is. Fe Co Ni Rn
11 Transition elements, in general exhibit the following properties, except one Name that property. Variable oxidation state Natural radioactivity Tendency to form complexes Formation of alloys
12 Which of the following statements false about transition metals. They form complexes They show variable valency All transiting metal compounds are paramagnetic They form coloured ions
13 Which one of the following ions is colourless. Cu+ Co2+ Ni2+ Fe3+
14 Gold dissolves in aqua regia forming AuCl Au(NO3)3 AuCl3 HAuCl4
15 Which of the following is soluble in water. AgF AgCl AgBr Ag I
16 Which of the following alloys contains Cu and Zn Bronze Brass Gun metal Type metal
17 The rusting of iron is catalyzed by which of the following. Fe H+ O2 Zn
18 Which of the following is not correct. Rusting of iron can be stopped by increasing the concentration of CO2 in water Rusting of iron is electrochemical in nature. Rusting of iron takes place in moist air Rusting of iron produces hydrated iron (III) oxide
19 Finely divided iorn combines with CO to give Fe(CO)3 Fe2 (CO)9 F33(CO)12 Fe(CO)6
20 In the metallurgy of iron, when limestone is added to the blast furnaced, the calcium ion ends up in Slag Gangue Metallic calcium Calcium carbonate
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