7 - Group 7A. Halogens

d. Halogens

Group 7A

a. Pnictogens
b. Icosagens
c. Chalcogens
d. Halogens

c. Fluorine

Pale yellow gas

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

b. Fluoride

_____ is used to combat dental caries.

a. Chloride
b. Fluoride
c. Bromide
d. Iodide

b. Freons

Are gases used as aerosol propellants.

a. Noble gases
b. Freons
c. Halons
d. Chloramines

d. Chlorofluorocarbons (CFCs)

Freons were originally _______

a. Hydrofluorocarbons (HFCs)
b. Perfluorocarbons (PFCs)
c. Hydrochlorofluorocarbons (HCFCs)
d. Chlorofluorocarbons (CFCs)

b. Ozone (O3) layer

CFC causes damage to the _______

a. Troposphere
b. Ozone (O3) layer
c. Ionosphere
d. Mesosphere

d. Montreal Protocol

International agreement that led to the discontinuation of CFC use.

a. Kyoto Protocol
b. Stockholm Convention
c. Basel Convention
d. Montreal Protocol

b. Chlorine

Greenish gas.

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

c. Chlorine

BEQ: Commonly used water disinfectant in municipal sewage systems.

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

c. Sodium hypochlorite

Also known as Bleach.

a. Sodium chloride
b. Sodium chlorate
c. Sodium hypochlorite
d. Sodium chlorite

c. Dakin's solution

Sodium hypochlorite solution with a concentration of 0.4–0.5%.

a. Lugol's solution
b. Labarraque's solution
c. Dakin's solution
d. Donovan's solution

b. Labarraque's solution

Sodium hypochlorite solution with a concentration of 4–6%.

a. Dakin's solution
b. Labarraque's solution
c. Fowler's solution
d. Lugol's solution

• Disinfectant

• Decolorizing agent

Primary use of Sodium hypochlorite (Bleach)

a. Antacid
b. Plasma expander
c. Disinfectant and decolorizing agent
d. Antifungal agent

c. Hydrochloric acid

Also known as Muriatic acid.

a. Nitric acid
b. Sulfuric acid
c. Hydrochloric acid
d. Acetic acid

b. Cleaning agent

Hydrochloric acid is used as a
a. Disinfectant
b. Cleaning agent
c. Reducing agent
d. Bleaching agent

b. Coagulative necrosis

Hydrochloric acid on skin causes this type of necrosis
a. Liquefactive necrosis
b. Coagulative necrosis
c. Caseous necrosis
d. Fat necrosis

b. Bromine

Reddish-brown liquid.

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

b. CNS depressant

Bromide (Br-) acts as a
a. CNS stimulant
b. CNS depressant
c. Diuretic
d. Antihistamine

a. Testing alkenes and tannins

Bromine is used for:

a. Testing alkenes and tannins
b. Water fluoridation
c. Plasma expansion
d. Film coating tablets

c. Iodine

Violet solid

• Example: Pellet

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

c. Iodine

Halogen found in thyroid hormones.

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

b. Goiter

Deficiency of iodine.

a. Cretinism
b. Goiter
c. Beriberi
d. Pellagra

a. Iodized salt

Treatment for Goiter (iodine deficiency)

a. Iodized salt
b. Lugol's solution
c. Potassium iodide injection
d. Tincture of iodine

d. Iodism

Excess iodine intake

a. Goiter
b. Fluorosis
c. Bromism
d. Iodism

b. Starch

Treatment for Iodism (excess iodine intake)

a. Activated charcoal
b. Starch
c. Prussian blue
d. Sodium bicarbonate

b. Lugol's solution

Strong iodine solution.

a. Tincture of iodine
b. Lugol's solution
c. Dakin's solution
d. Labarraque's solution

d. Astatine

Rarest naturally occurring element (<1g)

a. Francium
b. Tellurium
c. Polonium
d. Astatine

a. <1 g

Approximate amount of Astatine in the Earth's crust.

a. <1 g
b. <1 mg
c. <10 g
d. <100 g

a. Tennessine

Synthetic member of the halogen group.

a. Tennessine
b. Astatine
c. Iodine
d. Bromine