Chemistry ยท Science General

Common Chemical Compounds and Reactions

1,204 Questions

Common chemical compounds and reactions questions test your knowledge of everyday chemicals, their formulas, and their interactions. Topics include properties of acids and bases, hard water chemistry, and compounds like baking soda and plaster of paris. This section is essential for general science preparation.

Acids and basesPlaster of parisHard water chemistryCommon chemical formulasEveryday chemical reactions

Common Chemical Compounds and Reactions Questions

Multiple choice

What is the main ingredient in Portland cement?

  1. Calcium silicate

  2. Calcium carbonate

  3. Silica

  4. Alumina
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Portland cement is primarily composed of calcium silicate, which gives it its strength and durability.

Multiple choice

Which of the following is NOT a common type of precipitation agent used in hydrometallurgy?

  1. Sodium hydroxide

  2. Calcium hydroxide

  3. Ammonia

  4. Hydrogen sulfide
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hydrogen sulfide is a toxic gas that is commonly used in industrial processes such as oil refining and gas treatment. It is not a common precipitation agent used in hydrometallurgy, which involves the extraction of metals from ores using aqueous solutions.

Multiple choice

What is the chemical formula for baking soda?

  1. NaHCO3

  2. Na2CO3

  3. KHCO3

  4. K2CO3
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Baking soda, also known as sodium bicarbonate, has the chemical formula NaHCO3.

Multiple choice

What is the common name for sodium bicarbonate?

  1. Baking soda

  2. Baking powder

  3. Yeast

  4. Cream of tartar
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sodium bicarbonate is commonly known as baking soda.

Multiple choice

What is the primary function of baking soda in baking?

  1. Leavening agent

  2. Sweetener

  3. Thickening agent

  4. Preservative
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Baking soda is primarily used as a leavening agent in baking, causing baked goods to rise.

Multiple choice

How does baking soda work as a leavening agent?

  1. It reacts with acids to produce carbon dioxide gas.

  2. It reacts with bases to produce carbon dioxide gas.

  3. It reacts with water to produce carbon dioxide gas.

  4. It reacts with heat to produce carbon dioxide gas.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Baking soda reacts with acids present in baking ingredients, such as buttermilk, yogurt, or lemon juice, to produce carbon dioxide gas, which causes baked goods to rise.

Multiple choice

Can baking soda be used as a cleaning agent?

  1. Yes

  2. No

  3. It depends on the cleaning task
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Baking soda can be used as a cleaning agent due to its mild abrasive and deodorizing properties.

Multiple choice

Is baking soda safe to use on all surfaces?

  1. Yes

  2. No

  3. It depends on the surface
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Baking soda is generally safe to use on most surfaces, but it is important to test it on a small area first to make sure it does not cause damage.

Multiple choice

What is the electrolyte used in a Zinc-Air battery?

  1. Potassium hydroxide

  2. Sodium hydroxide

  3. Lithium hydroxide

  4. Sulfuric acid
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The electrolyte used in a Zinc-Air battery is typically potassium hydroxide, which provides a high ionic conductivity and promotes the electrochemical reactions.

Multiple choice

What is the name of the chemical compound that is commonly known as baking soda?

  1. Sodium bicarbonate

  2. Sodium chloride

  3. Potassium bicarbonate

  4. Potassium chloride
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sodium bicarbonate is the chemical compound that is commonly known as baking soda. It is a white, crystalline powder that is used as a leavening agent in baking and as an antacid.

Multiple choice

What is the name of the chemical compound that is commonly known as table salt?

  1. Sodium chloride

  2. Potassium chloride

  3. Calcium chloride

  4. Magnesium chloride
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sodium chloride is the chemical compound that is commonly known as table salt. It is a white, crystalline solid that is used to flavor food and as a preservative.

Multiple choice

What is the name of the chemical compound that is commonly known as baking powder?

  1. Sodium bicarbonate and an acid

  2. Sodium chloride and an acid

  3. Potassium bicarbonate and an acid

  4. Potassium chloride and an acid
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Baking powder is a mixture of sodium bicarbonate and an acid, such as cream of tartar. When baking powder is mixed with water, the acid and the sodium bicarbonate react to produce carbon dioxide gas, which causes baked goods to rise.

Multiple choice

What is the name of the chemical compound that is commonly known as lye?

  1. Sodium hydroxide

  2. Potassium hydroxide

  3. Calcium hydroxide

  4. Magnesium hydroxide
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sodium hydroxide is the chemical compound that is commonly known as lye. It is a white, crystalline solid that is used in the manufacture of soap, paper, and textiles.

Multiple choice

Which of the following is a strong base?

  1. Sodium hydroxide (NaOH)

  2. Ammonia (NH3)

  3. Calcium hydroxide (Ca(OH)2)

  4. Potassium hydroxide (KOH)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A strong base is a base that completely dissociates in water to form hydroxide ions (OH-) and its conjugate acid. Sodium hydroxide (NaOH) is a strong base that completely dissociates in water to form hydroxide ions and sodium ions.

Multiple choice

Which of the following is a weak base?

  1. Sodium hydroxide (NaOH)

  2. Ammonia (NH3)

  3. Calcium hydroxide (Ca(OH)2)

  4. Potassium hydroxide (KOH)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A weak base is a base that partially dissociates in water to form hydroxide ions (OH-) and its conjugate acid. Ammonia (NH3) is a weak base that partially dissociates in water to form hydroxide ions and ammonium ions.