Chemistry X - Halogens

Chemistry X - Halogens

1. 1). The halogen which is solid at room temperature is; SLO # 15.4.1

a) a). Fluorine
b) b). Bromine
c) c). Chlorine
d) d). Iodine

2. 2). A halogen which has higest electron affinity is; SLO # 15.2.3

a) a). Chlorine
b) b). Bromine
c) c). Iodine
d) d). Fluorine

3. 3). Chlorine acts as bleaching agent only in the presence of; SLO # 15.3.3

a) a). Dry air
b) b). Moisture
c) c). Sunlight
d) d). Pure oxygen

4. 4). The least polar hydrogen halide is; SLO # 15.1.1

a) a). HF
b) b). HBr
c) c). HCl
d) d). HI

5. 5). Chlorine reacts with water to form HCl & HOCl, this reaction is; SLO # 15.3.3

a) a). Oxidation
b) b). Reduction
c) c).Displacement
d) d). Self- oxidation -reduction

6. 6). The di-atomic molecules of halogen are held together by weak Vander Waal’s forces which shows; SLO # 15.1.2

a) a). Volatile nature
b) b). Acidic nature
c) c). Basic nature of the element
d) d). Ectropositivity

7. 7). Halogens are much better soluble in; SLO # 15.1.2

a) a). Water
b) b). Organic solvents
c) c). Inorganic solvents
d) d). Polar solvent

8. 8). Which halogen not forms Oxy-acids; SLO # 15.1.1

a) a). Fluorine
b) b). Chlorine
c) c). Bromine
d) d). Iodine

9. 9). Iodized table slat is obtained by mixing; SLO # 15.1.2

a) a). 0.02% sodium chlorate in sodium chloride
b) b). 0.04% KClO3 in common salt
c) c). 0.02% potassium Iodide in common salt
d) d). 0.03% Potassium chloride in sodium chloride

10. 10). Halogens form ionic compounds with; SLO # 15.1.1

a) a). S- block elements
b) b). P- block elements
c) c). d- block elements
d) d). f -block elements

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