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 Pick out incorrect statement regarding HF It is used for making chlorofluorocarbon used as refrigerating fluids and as propellants in aerosols It is used in making ASIF3 and synthetic cryolite Aqueous HF is used for etchine glass HF does not react with B2O3 even in presence of conc. H2SO4
2 Which is the strongest reducing agent. HF HCl HBr HI
3 The halide which is inert to water is PCl5 SiCl4 BCl3 SF3
4 Which one of the following has the biggest electron affinity. F2 Cl2 Br2 I2
5 The fluoride tooth paste contains SnF2 and Sn2P2O7 NaF CaF2 None of these
6 Chlorine gas acts as a bleaching agent only in presence of. dry air Moisture Sunlight Pure oxygen
7 Which of the following is a false statement. Halogens are strong oxidizing agent Halogens show only (-I) Oxidation state Hf molecules from intermolecular H-Bonds Fluorine is highly reactive
8 Which of the following is the strongest oxidant. F2 Cl2 br2 I2
9 Which number of halogen family does not show positive oxidation state. Fluorine Chlorine Bromine Iodine
10 Which of the halogens has lowest bond energy. Cl2 Br2 F2 I2
11 pKa value of hyponitrous acid is. -7.0 8.9 4.1 6.6
12 Example of peseudohalonge group. Cyanogen Thiocyanogen Selenocyanogen All above
13 CIF is Chlorine monoflouride Fluourine Monochlorine fluoride Monofluorine chloride
14 Inter halogens are of types. 3 4 5 6
15 Highly dangerous acid and produces severe wounds on the skin. HCIO HCIO2 HCIO3 HCIO4
16 HCIO2 gives the structure of a. Linear Angular trigonal pyramidal Tetra hddral
17 HCIO evolves Cl2 and O2 when dissolve Ca Ni Cu Any of above
18 Increasing oxygen contents in oxyacids leads to. An increase in thermal stability An increase in acid strength A decrease in oxidizing power All above
19 The oxidation state of HCiO4 + 7 + 3 + 5 + 1
20 iodine is used as a Photography Manufacture of dyes Analgesic All above
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