PPSC Chemistry Full Book Test With Answers

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PPSC Chemistry Full Book Test

Sr. # Questions Answers Choice
1 Formula of orthophosphoric acid H2PO4 H3PO2 H3PO2 H2P2O5
2 Acid rain effects Human being Crops Aquatic life All above
3 Nitric acid is used in manufacturing of. Explosive H2SO4 Fertilizer All above
4 Nitric acid has the property <div>Nitrating</div> Reducing Redoxing None of above
5 Aque regia is made by dissolving a mixture of HNO3 and HCl with ratio. 1 : 1 1 : 3 1 : 2 1 :10
6 In Ostwald's process of manufacturing nitric acid a mixture of ammonia gas with air is mantained with ratio. 1 : 4 1 :3 1: 8 1 : 10
7 Nitric acid is used in the manufacturing of. Dyes Drugs Artificial silk All above
8 An explosive Nitroglycerine Trinitrotoluene Fluorine perchlorate All above
9 Since the acid gives both acidic and normal salts so the acid is. di acid di basic double salt Any of above
10 A red color gas, on condensing ti gives a dark blue liquid. NO N2O N2O3 N2O4
11 An equal volume mixture explodes with violence H2 &amp; N2O H2 &amp; NO H2 &amp; N2O4 H2 &amp; N2O3
12 A colorless gas with pleasant odour and sweet taste. N2O N2O3 NO N2O4
13 Among oxides of nitrogen all are gases except. N2O5 N2O NO N2O3
14 Artificial nitrogen fixation may occur by the formation of. Nitric acid Ammonia Nitrides Any of above
15 Molecule is a diatomic Nitrogen Phosphorous Arsenic Antimony
16 The common oxidation state of elements of group V A is. -3 +3 +5 Any above
17 The electronegativity of phosphorus is. 3.0 2.1 2.0 1.9
18 Which element are non metals. N &amp; P Sb &amp; Bi As &amp; Sb N &amp; Bi
19 Group VA of the periodic table consist of elements. 3 4 5 6
20 Which of the following compounds combines with hemoglobin. CO2 CO NO N2
21 Dry ice is Solid CO Solid CO2 Solid NH3 Solid SO2
22 Blue color of glass of due to the presence of . Cobalt (II) Chromium (III) Iron (III) copper (II)
23
Red colour of glass of due to the presence of
 Cu2O CoO MnO2 CdS
24 The green colour of glass is due to the presence of. Chromium (III) Cobalt (II) Mn (IV) Iron(III)
25 The three dimensional silicate anion (Si2O52-)n is present in Beryl Silica Asbestos Clays
26 The silicate chains are present in Silica asbestos Beryl Clays
27 Lead pencil contain Lead Lead sulphide a mixture of lead and silica graphite
28 The different layers in graphite are held together by Ionic bonding Metallic bonding Covalent bonding Van der Waals forces
29 Diamond and carbon are the _________ forms of carbon Isotropic amorphous Allotropic Isomeric
30 Which property is not exhibited by carbon in its compounds. Forming bounds to other carbon atoms Formation multiple forms Exhibiting allotropic forms Forming compounds with coordination number beyond four
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