ECAT Chemistry Chapter 16 The Halogens and The Noble Gases Online Test With Answers

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ECAT Chemistry Chapter 16 The Halogens and The Noble Gases Online Test

Sr. # Questions Answers Choice
1 An element that has a high ionization energy and tends to be chemically inactive would most likely to be: an alkali metal a transition element a noble gas a halogen
2 Hydrogen bond is the strongest between the molecules of: HF HCl HBr Hl
3 Chlorin heptoxide reacts with water to form: Hypochlorous acid Chloric acid Perchloric acid Chlorine and oxygen
4 Which of the following hydrogen halide is the weakest acid in solution? HF HBr Hl HCl
5 Halogens are called Salt former Light bearing Copper forming none of these
6 Which is used in bacterial lamps He Ne Ar Kr
7 Which is used in arc welding and cutting? He Ne Ar Kr
8 Which is used as cooling medium in nuclear reactors? He Ne Ar Kr
9 Which noble gas is used in mixture used for breathing by divers? Cl<sub>2</sub> NH<sub>3</sub> CO<sub>2</sub> He
10 Which has complete valence shell? C N O Ne
11 Which compound of noble gas xenon can be prepared? Oxides Fluoride Oxyfluorides All of these
12 Noble gases are placed in group Group IV-A Group V-A Group VI-A Group VII-A
13 I2O5is used for quantitative study of CO<sub>2</sub> NO<sub>2</sub> NO CO
14 Angle is OF2is 120<sup>0</sup> 180<sup>0</sup> 105<sup>0</sup> 102<sup>0</sup>
15 Gaseous HF exists in the form of Monomers Cyclic hexamers As single entity Both a and b
16 Which has the least oxidizing power? F<sub>2</sub> Cl<sub>2</sub> Br<sub>2</sub> I<sub>2</sub>
17 Oxidation state of fluorine is +1 +2 -1 -2
18 Which halogen has maximum Van-der Waal's forces? F<sub>2</sub> Cl<sub>2</sub> Br<sub>2</sub> I<sub>2</sub>
19 Smell of halogen is Fruity Sweet Irritating Rotten egg
20 Which halogen has Iustrous shining? F<sub>2</sub> Cl<sub>2</sub> Br<sub>2</sub> I<sub>2</sub>
21 The only non-metal in liquid form is S Cl Br P
22 Half life period of astatine is 8.1 hrs 8.2 Hrs 8.3 hrs 8.4 hrs
23 The most reactive elements are Group IV-A Group V-A Group VI-A Group VII-A
24 Astatine belongs to group I-A II-A III-A VII-A
25 Which of the following represents the correct electronic configuration of the outermost energy level of an element of zero (VIIA) group in the ground state? s<sup>2</sup>p<sup>2</sup> s<sup>2</sup>p<sup>4</sup> s<sup>2</sup>p<sup>5</sup> s<sup>2</sup>p<sup>6</sup>
26 An element that has a high ionization energy and tends to be chemically inactive would most likely to be an alkali metal a transition element a noble gas a halogen
27 Which halogen occurs naturally in a positive oxidation state? Fluorine Chlorine Bromine Iodine
28 Which is the strongest acid? HClO HClO<sub>2</sub> HClO<sub>3</sub> HClO<sub>4</sub>
29 Bleaching powder may be produced by passing chlorine over Calcium carbonate Hydrated calcium sulphate Anhydrous calcium sulphate Calcium hydroxide
30 the anhydride of HCIO4is CIO<sub>3</sub> ClO<sub>2</sub> Cl<sub>2</sub>O<sub>5</sub> Cl<sub>2</sub>O<sub>7</sub>
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