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Worksheets

FC CHEM 4

Total questions: 52

Worksheet time: 26mins

Name
Class
Date
1.

A homogeneous mixture of two or more substances is a(n);

a)

Element

b)

Compound

c)

Suspension

d)

Solution

2.

The reaction of a fat or oil (triglyceride) with a strong base to produce glycerol and soap is called:

a)

Esterification

b)

Hydrolysis

c)

Combustion

d)

Saponification

3.

A monosaccharide contains a ketone group as its most oxidized functional group. It is classified as a(n):

a)

Aldose

b)

Ketose

c)

Hexose

d)

Pentose

4.

Who is often called the "father of modern chemistry" for his work on the law of conservation of mass and the system of chemical nomenclature?

a)

John Dalton

b)

Robert Boyle

c)

Antoine Lavoisier

d)

Joseph Priestley

5.

What is the common name for dinitrogen monoxide (N2O), a gas known for its anesthetic and euphoric effects?

a)

Laughing gas

b)

Tear gas

c)

Nitrous air

d)

Marsh gas

6.

The chemical symbol 'Au' for gold is derived from what Latin word?

a)

Argentum

b)

Aurum

c)

Aurantium

d)

Aurelius

7.

Which element is the most abundant in the Earth's crust by mass?

a)

Silicon

b)

Aluminum

c)

Iron

d)

Oxygen

8.

What is the approximate bond angle of a water molecule (H2O)?

a)

90°

b)

104.5°

c)

109.5°

d)

180°

9.

Which element was discovered by Hennig Brand in 1669 while he was attempting to create the Philosopher's Stone from urine?

a)

Sulfur

b)

Mercury

c)

Phosphorus

d)

Zinc

10.

Muriatic acid is the common industrial name for which chemical?

a)

Sulfuric acid

b)

Nitric acid

c)

Acetic acid

d)

Hydrochloric acid

11.

Who is regarded as the "father of organic chemistry" for synthesizing an organic compound (urea) from an inorganic reactant in 1828?

a)

Friedrich Kekulé

b)

Friedrich Wöhler

c)

Jöns Jacob Berzelius

d)

Justus von Liebig

12.

What is the common name for methanol (CH3OH), historically produced by the destructive distillation of wood?

a)

Grain alcohol

b)

Rubbing alcohol

c)

Wood alcohol

d)

Denatured alcohol

13.

The distinct smell of rotten eggs is primarily caused by which sulfur-containing compound?

a)

Sulfur dioxide

b)

Carbon disulfide

c)

Hydrogen sulfide

d)

Dimethyl sulfide

14.

What is the approximate boiling point of n-pentane (C5H12)?

a)

0 °C

b)

36 °C

c)

69 °C

d)

100 °C

15.

Formic acid, the simplest carboxylic acid, gets its name from the Latin word formica, which means what?

a)

Ant

b)

Bee

c)

Vinegar

d)

Plant

16.

The structure of which aromatic compound was famously conceived by August Kekulé in a dream of a snake biting its own tail?

a)

Toluene

b)

Naphthalene

c)

Benzene

d)

Phenol

17.

Bakelite, one of the first plastics made from synthetic components, is a polymer of which two chemicals?

a)

Ethylene and Propylene

b)

Phenol and Formaldehyde

c)

Styrene and Butadiene

d)

Vinyl Chloride and Acetate

18.

Who were the two scientists credited with discovering the double helix structure of DNA in 1953?

a)

Hershey and Chase

b)

Meselson and Stahl

c)

Watson and Crick

d)

Pauling and Corey

19.

Which of the following is an essential amino acid, meaning it cannot be synthesized by the human body and must be obtained from the diet?

a)

Alanine

b)

Serine

c)

Lysine

d)

Glycine

20.

A deficiency of Vitamin C (ascorbic acid) leads to which disease, historically common among sailors?

a)

Scurvy

b)

Beriberi

c)

Pellagra

d)

Rickets

21.

What is the common name for sucrose, a disaccharide composed of glucose and fructose?

a)

Blood sugar

b)

Milk sugar

c)

Fruit sugar

d)

Table sugar

22.

Which molecule serves as the primary, short-term energy currency of the cell?

a)

Glucose

b)

Adenosine triphosphate (ATP)

c)

Deoxyribonucleic acid (DNA)

d)

Glycogen

23.

What is the name of the bond that links amino acids together to form proteins?

a)

Glycosidic bond

b)

Ester bond

c)

Peptide bond

d)

Hydrogen bond

24.

Which element is named after the Greek word for "stone," lithos, because it was first discovered in a mineral?

a)

Silicon

b)

Calcium

c)

Lithium

d)

Potassium

25.

The Haber-Bosch process, developed in the early 20th century, is the primary industrial method for producing what chemical?

a)

Sulfuric Acid

b)

Ammonia

c)

Chlorine Gas

d)

Sodium Hydroxide

26.

What is the common name for sodium bicarbonate (NaHCO3), a compound widely used in baking and as an antacid?

a)

Caustic Soda

b)

Washing Soda

c)

Baking Soda

d)

Soda Ash

27.

Which of the noble gases is the most abundant in the Earth's atmosphere, making up about 0.93% by volume?

a)

Neon

b)

Helium

c)

Krypton

d)

Argon

28.

The brilliant crimson color of fireworks is typically produced by the combustion of salts of which element?

a)

Strontium

b)

Barium

c)

Copper

d)

Sodium

29.

Aqua regia, known for its ability to dissolve gold and platinum, is a mixture of which two acids?

a)

Sulfuric acid and Nitric acid

b)

Hydrochloric acid and Sulfuric acid

c)

Nitric acid and Hydrochloric acid

d)

Acetic acid and Nitric acid

30.

Who is credited with the development of the modern periodic table, arranging elements by atomic mass and leaving gaps for undiscovered elements?

a)

Dmitri Mendeleev

b)

Lothar Meyer

c)

Henry Moseley

d)

John Newlands

31.

The suffix "-ane" in a hydrocarbon's name, such as in "methane" or "ethane," signifies what?

a)

The presence of only single bonds

b)

The presence of a double bond

c)

The presence of a triple bond

d)

The presence of a benzene ring

32.

What is the common name for ethanoic acid, the main component of vinegar besides water?

a)

Formic acid

b)

Acetic acid

c)

Butyric acid

d)

Citric acid

33.

Chloroform, an early anesthetic, has the IUPAC name trichloromethane. What is its chemical formula?

a)

CH3Cl

b)

CH2Cl2

c)

CHCl3

d)

CCl4

34.

What is the approximate boiling point of n-octane (C8H18), a major component of gasoline?

a)

98 °C

b)

126 °C

c)

151 °C

d)

174 °C

35.

The process of converting a liquid vegetable oil into a solid or semi-solid fat (like margarine) is known as what?

a)

Saponification

b)

Esterification

c)

Hydrogenation

d)

Fermentation

36.

Who discovered polyethylene in 1933, the world's most common plastic?

a)

Leo Baekeland

b)

Wallace Carothers

c)

Roy Plunkett

d)

Eric Fawcett and Reginald Gibson

37.

A deficiency of Vitamin B1, also known as thiamine, results in which disease?

a)

Scurvy

b)

Pellagra

c)

Rickets

d)

Beriberi

38.

The process by which messenger RNA (mRNA) is synthesized from a DNA template is called what?

a)

Translation

b)

Transcription

c)

Replication

d)

Transamination

39.

Who first crystallized and determined the structure of a protein (hemoglobin) using X-ray crystallography, earning a Nobel Prize in Chemistry in 1962?

a)

Linus Pauling

b)

Frederick Sanger

c)

Max Perutz

d)

Dorothy Hodgkin

40.

The Ostwald process is an industrial method used to produce which important acid from ammonia?

a)

Sulfuric acid

b)

Hydrochloric acid

c)

Nitric acid

d)

Phosphoric acid

41.

What is the common name for calcium sulfate dihydrate (CaSO4⋅2H2O), a mineral used to make plaster and drywall?

a)

Quicklime

b)

Gypsum

c)

Limestone

d)

Epsom salt

42.

Which element is unique in that its most common isotope, protium, has a nucleus containing no neutrons?

a)

Helium

b)

Lithium

c)

Hydrogen

d)

Carbon

43.

The Frasch process was a method for extracting which element from underground deposits by melting it with superheated water?

a)

Sodium

b)

Sulfur

c)

Phosphorus

d)

Lead

44.

Which element was named after the Greek word selenē, meaning "moon," because it was often found associated with tellurium (named after tellus, "earth")?

a)

Antimony

b)

Selenium

c)

Cadmium

d)

Indium

45.

What is the name for a substance that can act as both an acid and a base, such as water?

a)

Isotonic

b)

Amphoteric

c)

Isomeric

d)

Allotropic

46.

The reaction of an alcohol with a carboxylic acid in the presence of an acid catalyst produces an ester and water. What is this reaction called?

a)

Saponification

b)

Fischer Esterification

c)

Grignard Reaction

d)

Friedel-Crafts Acylation

47.

What is the common name for 2-propanol (CH3CH(OH)CH3), a common solvent and disinfectant?

a)

Wood alcohol

b)

Grain alcohol

c)

Ethylene glycol

d)

Rubbing alcohol

48.

The distinctive smell of nail polish remover is due to which common organic solvent?

a)

Toluene

b)

Acetone

c)

Formaldehyde

d)

Diethyl ether

49.

What is the approximate boiling point of n-decane (C10H22)?

a)

126°C

b)

151°C

c)

174°C

d)

196°C

50.

Who is credited with the invention of nylon, the first commercially successful synthetic thermoplastic polymer, in the 1930s?

a)

Leo Bakeland

b)

Wallace Carothers

c)

Hermann Staudinger

d)

Giulio Natta

51.

Butyric acid, a carboxylic acid with four carbon atoms, is responsible for the characteristic smell of what?

a)

Rancid butter

b)

Green apples

c)

Pineapples

d)

Lemons

52.

The process of breaking down large hydrocarbon molecules into smaller, more useful ones(like in oil refining) is called what?

a)

Cracking

b)

Reforming

c)

Polymerization

d)

Alkylation