MCQ in General Chemistry Part 5 | ECE Board Exam

This is the Multiple Choice Questions Part 5 of the Series in General Chemistry as one of the General Engineering and Applied Sciences (GEAS) topics. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize yourself with each and every question compiled here taken from various sources including past Board Questions in General Engineering and Applied Sciences (GEAS) field.

Continue Practice Exam Test Questions Part 5 of the Series

⇐ MCQ in General Chemistry Part 4 | ECE Board Exam

Choose the letter of the best answer in each question.

201. What refers to the measure of how fast a substance dissolves?

A. Rate of solubility

B. Rate of agitation

C. Rate of dissolution

D. Rate of solution

202. How can the rate of dissolution be increased?

A. Reduce particle size

B. Agitation

C. Application of heat

D. All of the above

203. ________ means there is only a little amount of solute dissolved in a solution.

A. Concentrated

B. Dilute

C. Saturated

D. Unsaturated

204. ________ means there is a large amount of solute dissolved in the solution.

A. Concentrated

B. Dilute

C. Saturated

D. Unsaturated

205. What is the ratio of the number of moles of one component of a solution to the total number of moles of all the components?

A. Molarity

B. Molality

C. Formality

D. Mole fraction

206. What is the ratio of the number of moles of solute to the volume of the solution in liters?

A. Molarity

B. Molality

C. Formality

D. Mole fraction

207. What is the ratio of the number of moles of solute per kilogram of solvent?

A. Molarity

B. Molality

C. Formality

D. Mole fraction

208. What is the process of making a solution less concentrated as in the addition of more solvent?

A. Concentration

B. Dilution

C. Saturation

D. Colligation

209. What is the process of changing liquid to gas that is usually accompanied by the production of the bubbles of vapor in the liquid?

A. Vaporizing

B. Boiling

C. Condensing

D. Sublimation

210. What is the temperature at which the vapor pressure of the liquid equals the prevailing atmospheric pressure?

A. Boiling point

B. Triple point

C. Saturation point

D. Critical point

211. What is the temperature at which liquid and solid are in equilibrium?

A. Boiling point

B. Resting point

C. Freezing point

D. Critical point

212. What refers to the decrease in the freezing point of a pure liquid when another substance is dissolved in the liquid?

A. Freezing point compression

B. Freezing point extension

C. Freezing point depression

D. Freezing point dilution

213. If two solutions have the same concentration of solute, they are ________.

A. hypertonic

B. hypotonic

C. isotonic

D. photonic

214. If one of the two solutions has a bigger concentration of solute particles than the other, the one with the higher concentration is described as _____.

A. hypertonic

B. hypotonic

C. isotonic

D. photonic

215. If one of the two solutions has a bigger concentration of solute particles than the other, the one with the lower concentration is described as _____.

A. hypertonic

B. hypotonic

C. isotonic

D. photonic

216. The movement of solvent particles through a semi-permeable membrane from the region lower solute concentration to the region of higher solute concentration is called _________.

A. osmosis

B. hymolysis

C. orenation

D. dialysis

217. The term “colloid” comes from the Greek “kolla” and “oidos” which means _________.

A. cloudy appearance

B. cloudy shape

C. glue appearance

D. glue color

218. What are suspensions of liquid or solid particles in a gas called?

A. Emulsions

B. Aerosols

C. Foams

D. Sols

219. What in some aerosol products that can cause harm to the atmosphere?

A. Smog

B. Chlorofluorocarbons (CFC)

C. Emulsifying agent

D. Hydrocarbons

220. What are colloidal dispersion of gas bubbles in liquids or solids?

A. Emulsions

B. Aerosols

C. Foams

D. Sols

221. What is a colloidal dispersion of a liquid in either a liquid or a solid?

A. Emulsions

B. Gels

C. Foams

D. Sols

222. What is a solid dispersed in either a solid or a liquid?

A. Emulsions

B. Gels

C. Foams

D. Sols

223. What is a colloidal system in which the dispersed phase consists of fibrous, interwoven particles called fibrils which exert a marked effect on the physical properties of the dispersing medium?

A. Emulsions

B. Gels

C. Foams

D. Sols

224. Most cosmetics and ointments and creams used in medicines are ______.

A. emulsions

B. gels

C. foams

D. sols

225. The substance usually used in cleaning toilets bowls and tiles is muriatic acid. What is another term for this?

A. Nitric acid

B. Sulfuric acid

C. Hydrochloric acid

D. Phosphoric acid

226. “Upon dissociation in water, acids yield hydrogen ions while gases yield hydroxide ions.” What is this statement commonly called?

A. Arrhenius theory

B. pH concept

C. Bronstead-Lowry theory

D. Le Chatelier’s principle

227. What is defined as a substance which, upon reaction with water causes an increase in the concentration of the solvent cation, H₃O?

A. Lewis acid

B. Lewis base

C. Arrhenius base

D. Arrhenius acid

228. What is defined as a substance which, upon reaction with water causes an increase in the concentration of the solvent anion, OH?

A. Lewis acid

B. Lewis base

C. Arrhenius base

D. Arrhenius acid

229. What is the dissolution constant of water at 25°C?

A. 1.8 x 10^-15

B. 1.8 x 10^-16

C. 1.8 x 10^-17

D. 1.8 x 10^-18

230. What theory states that an acid in any substance that donates a proton to another substance, and a base is any substance that can accept a proton from any other substance?

A. Arrhenius theory

B. Bronsted-Lowry theory

C. Lewis theory

D. pH concept

231. What theory states that an acid is a substance that can accept a lone pair from another molecule, and a base is a substance that has a lone pair of electrons?

A. Arrhenius theory

B. Bronsted-Lowry theory

C. Lewis theory

D. pH concept

232. An acid described as an electron pair acceptor is the _________ acid.

A. Arrhenius

B. Pure

C. Lewis

D. Bronsted-Lowry

233. The Bronsted-Lowry acid is:

A. a proton donor

B. a proton acceptor

C. an electron pair acceptor

D. an electron pair donor

234. The Bronsted-Lowry base is:

A. a proton donor

B. a proton acceptor

C. an electron pair acceptor

D. an electron pair donor

235. According to Gilbert Lewis an acid-base reaction as the sharing of an electron pair will form what type of bond?

A. Coordinate ionic bond

B. Coordinate covalent bond

C. Coordinate metallic bond

D. Coordinate bond

236. What is the type of covalent bond in which the shared electrons are donated by one, not both, of the atoms involved?

A. Synchronous covalent bond

B. Coordinated covalent bond

C. Asynchronous covalent bond

D. Translating covalent bond

237. What is the term used for the product of a Lewis acid-base reaction?

A. Oxyacids

B. Binary acids

C. Acibas

D. Adduct

238. Acids composed of only two elements; hydrogen and nonmetal are called __________.

A. Binary acids

B. Ternary acids

C. Oxyacids

D. Organic acids

239. What is added to hydrochloride to form hydrochloric acid?

A. Oxygen

B. Sulfur

C. Water

D. Carbon

240. Acids consist of three element; hydrogen and two nonmetals are called _____.

A. Triacids

B. Ternary acids

C. Oxyacids

D. Organic acids

241. If one of the two nonmetals of a ternary acid is oxygen, the acid is called ____.

A. Oxide

B. Oxyacid

C. Oxide acid

D. Acidic acid

242. Which of the following is the formula of sulfuric acid?

A. H₂SO₄

B. H₂SO₃

C. HNO₂

D. HNO₃

243. Which of the following is the formula of nitric acid?

A. HNO₄

B. H₂NO₃

C. HNO₂

D. HNO₃

244. What acid is usually used in vinegars?

A. Sulfuric acid

B. Acetic acid

C. Nitric acid

D. Carbonic acid

245. What acid is used in glass itching?

A. Acetylsalicylic acid

B. Hydrofluoric acid

C. Phosphoric acid

D. Hydrochloric acid

246. What acid is usually present in some fruits?

A. Citric acid

B. Carbonic acid

C. Organic acid

D. Nitric acid

247. What acid is used in carbonated drinks?

A. Carbonic acid

B. Hydrofluoric acid

C. Nitric acid

D. Citric acid

248. What acid usually used to reduce pain and inflammation such as aspirin and other pain relievers?

A. Carbonic acid

B. Acetylsalicylic acid

C. Sulfuric acid

D. Phosphoric acid

249. What acid is usually used in the manufacture of fertilizers?

A. Carbonic acid

B. Acetylsalicylic acid

C. Sulfuric acid

D. Phosphoric acid

250. What acid is usually used in the manufacture of explosives?

A. Carbonic acid

B. Acetylsalicylic acid

C. Nitric acid

D. Phosphoric acid

Complete List of MCQs in General Engineering and Applied Science per topic