[Practice Questions] - True or False

Proverbs 16 :3

True

Monosaccharides can be classified as aldoses or ketoses.

True

False

False

Deprotonation of carboxylic acid yields a carbonyl group.

True

False

True

Esters, chemically speaking are considered as polar compounds or substances.

True

False

False

Acetic acid was used to acidify the Lassaigne's extract prior to the addition of lead acetate.

True

False

False

Qualitative analysis is an analysis method used to determine the number of elements or molecules produced during a chemical reaction.

True

False

False

Iodoform test is an example of halogenation reaction wherein methyl ketone is reduced to acid and iodoform.

True

False

False

In the computation of the number of moles, balancing is the equation is not necessary since we are only computing for the equivalent number of moles.

True

False

True

Lassagine's test is also known as the sodium fusion test.

True

False

False

Complete oxidation of primary alcohol produces an aldehyde.

True

False

True

Dimethylamine is an example of secondary amine.

True

False

True

Phenol is an example of protoplasmic poison.

True

False

False

The α-carbon of carboxylic acid can be converted to amines via Hell-Volhard-Zelinsky reaction.

True

False

True

Phenols can react with peroxy- and hydroxy- radicals thereby producing anti-oxidant property.

True

False

True

Amino acids are organic acids that contain an amine group.

True

False

False

The boiling point of phenol is 40.5°C.

True

False

True

Presence of orange color using bromine water test indicates the presence of saturated compounds.

True

False

True

Carboxylic acid molecules are polar due to the presence of two electronegative oxygen atoms.

True

False

True

Phenol is prepared in the laboratory by a diazotization of primary aromatic amines.

True

False

True

Acrolein is chemically known as propenal.

True

False

True

The end reaction for chromic acid test is the conversion from orange to green or blue.

True

False

False

If a catalyst is added in an equilibrium, it can affect the reaction by shifting its direction to the right or the product side.

True

False

False

Methane is formed when decaying vegetable matter is covered with carbon dioxide and water.

True

False

False

Arsenic, antimony and mercury are found on some organic compounds as trace elements.

True

False

True

Based on structure, isopropyl alcohol is an example of secondary alcohol.

True

False

False

Acetylene is a colorless and odorless gas.

True

False

True

Methyl salicylate can be extracted from nature by maceration then subsequent steam distillation.

True

False

False

• NOTE: The amide group is attached to a phenyl ring, not an "acetoxy ring."

On the structure of acetanilide, the amide functional group is attached on the acetoxy ring.

True

False

False

—NOTE: Choral is a CNS depressant

Chloral can be used as CNS stimulant thus capable of inducing sleep.

True

False

False

NOTE:
—Indophenol is typically blue in color, not red or brown.

Indophenol is colored red or brown.

True

False

True

The expected result with Millon's test is flesh precipitate.

True

False

False

Naturally occurring phenols are sometimes basic.

True

False

False

Tribromophenol absorbs visible light.

True

False

True

The chief source of hydrocarbons are petroleum and natural gas.

True

False

True

Fruit juices can be converted to alcohol with the help of yeast.

True

False

True

Aspirin at lower dose can be used as antithrombotic agent.

True

False

False

Seeding is the process wherein the side of the glass vessel are scratched using a stirring rod.

True

False

True

Some organic acids are naturally produced in the human body.

True

False

False

Acetanilide is used as anti-inflammatory due to its ability to inhibit LOX and COX.

True

False

False

This sodium bisulfate, aldehydes and methyl ketones can form water soluble salts of bisulfates.

True

False

True

Fruity odors represent the presence of esters

True

Flase

False

Schiff's test is a differentiating test for ketones and aldehydes because aldehydes are readily oxidized when compared to ketones.

True

False

True

Double bond is composed of one strong sigma bond and a weak pi bond.

True

False

False

—NOTE: Complete oxidation of ethanol goes beyond acetaldehyde, ultimately producing acetic acid

Complete oxidation of ethanol produces acetaldehyde which is responsible for hangover.

True

False

True

Acetylene can be used as artificial ripening of fruits.

True

False

False

In the reflux distillation, an Erlenmeyer or distilling flask can be used depending on the availability of the condenser or glass tube.

True

False

True

As the molecular weight increases, the boiling point also increases.

True

False

False

the aglycone portion of salicin is a sugar moiety such as glucose or rhamnose.

True

False

True

Excessive use of alcohol may cause the destruction of liver, a condition known as cirrhosis.

True

False

True

Prontosil is an example of brilliant azo red dye that can be used as antibacterial.

True

False

True

Acids such as phosphoric, sulfuric, and hydrochloric can be used as a source of proton on the synthesis of salicylic acid.

True

False

True

The carbon found on methanol is called as the "carbinol" carbon.

True

False

False (aDsorbent)

The activated charcoal's absorbent mechanism makes it an excellent clarifying agent.

True

False

True

In the synthesis of acetanilide, aniline acts as a nucleophile, while the acyl group from the acetic anhydride acts as electrophile.

True

False

True

The density or specific gravity of the liquid can be used in computing the equivalent weight of the reactant given in milliliters.

True

False

True

The antidote for methanol poisoning is ethanol.

True

False

True

Menthol can be used in cough preparations and nasal sprays as decongestants.

True

False

False (CO2)

NOTE:

• Complete combustion of hydrocarbons produces carbon dioxide (CO₂) and water (H₂O).

Complete combustion of hydrocarbons produces carbon monoxide and water molecule.

True

False

True

The use of NNRTIs do not require bioactivation:

True

False

true

When there is an insufficient of one of the reactants, the reaction can stop abruptly.

True

False

False

If there is no change in color when red litmus is used indicates the presence of phenolic group.

True

False

True

Phenols can be synthesized by hydrolysis of sodium benzene sulfonate.

True

False

True

Aniline is colorless oily liquid that is stored on a light resistant container.

True

False

False

Methyl salicylate can be used as rubefacient when taken on small doses internally.

True

False

True

Presence of ketone bodies in the urine is a sign that the patient is suffering from diabetes mellitus.

True

False

False (qualitative)

Sodium fusion test is used for the quantitative analysis of elements nitrogen, sulfur and halogen in organic compounds.

True

False

True

Vitamin E is an example of lipid soluble vitamin.

True

False