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

Which chemical is commonly used for corrosion control in conventional water treatment plants?

  1. Sodium hydroxide

  2. Sulfuric acid

  3. Sodium bicarbonate

  4. Calcium hydroxide
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sodium bicarbonate is commonly used for corrosion control in conventional water treatment plants because it is effective at raising the pH of the water and preventing corrosion.

Multiple choice

Which of these is a common ingredient in sports drinks?

  1. Sodium

  2. Potassium

  3. Magnesium

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sodium, potassium, and magnesium are all important electrolytes that are lost through sweat and need to be replenished during exercise.

Multiple choice

In Islam, which ingredient is considered a symbol of purity and is often used in the preparation of wudu, a type of ritual ablution?

  1. Water

  2. Salt

  3. Vinegar

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

Water is considered a sacred ingredient in Islam and is often used in the preparation of wudu, a type of ritual ablution that is performed before prayers. Water is believed to be a symbol of purity and is also considered to have medicinal properties.

Multiple choice

What type of toothpaste should you use?

  1. Toothpaste with fluoride

  2. Toothpaste without fluoride

  3. Toothpaste with baking soda

  4. Toothpaste with charcoal
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Toothpaste with fluoride is recommended because fluoride helps to strengthen teeth and prevent tooth decay.

Multiple choice

Which of the following chemicals is a known neurotoxin?

  1. Lead

  2. Fluoride

  3. Sodium chloride

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

Lead is a known neurotoxin, and exposure to high levels of lead can cause a range of neurological problems, including cognitive impairment, behavioral changes, and developmental delays.

Multiple choice

What is the chemical formula for calcite?

  1. CaCO3

  2. CaSO4

  3. CaMg(CO3)2

  4. CaF2
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Calcite is a carbonate mineral with the chemical formula CaCO3. It is the primary component of limestone and marble.

Multiple choice

What are the products of saponification?

  1. Soap and glycerol

  2. Soap and water

  3. Glycerol and water

  4. Soap, glycerol, and water
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The products of saponification are soap and glycerol. Soap is a salt of a fatty acid, while glycerol is a trihydroxy alcohol.

Multiple choice

What are the products of hydrolysis?

  1. Soap and glycerol

  2. Soap and water

  3. Glycerol and water

  4. Soap, glycerol, and water
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The products of hydrolysis are glycerol and water. Glycerol is a trihydroxy alcohol, while water is a molecule of hydrogen and oxygen.

Multiple choice

Which of the following is a commonly used preservative?

  1. Sodium benzoate

  2. Potassium sorbate

  3. Calcium propionate

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sodium benzoate, potassium sorbate, and calcium propionate are all commonly used preservatives that inhibit the growth of bacteria, yeast, and mold in food.

Multiple choice

Which of the following is an example of a food additive that is used to improve dough strength?

  1. Potassium bromate

  2. Sodium bicarbonate

  3. Calcium propionate

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Potassium bromate is a food additive that is used to improve dough strength and elasticity, resulting in better bread quality.

Multiple choice

Which of the following is a type of battery that uses a molten salt electrolyte?

  1. Lead-acid battery

  2. Nickel-cadmium battery

  3. Lithium-ion battery

  4. Sodium-sulfur battery
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sodium-sulfur batteries are a type of rechargeable battery that uses a molten salt electrolyte. They operate at high temperatures and have a high energy density. Sodium-sulfur batteries are used in some electric vehicles and grid storage applications.

Multiple choice

What is the primary component of glass ionomer cement?

  1. Polyacrylic acid

  2. Fluoroaluminosilicate glass

  3. Water

  4. Tartaric acid
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Glass ionomer cement is a type of dental restorative material that is primarily composed of fluoroaluminosilicate glass, which is a type of glass that contains fluoride.

Multiple choice

What is the primary component of zinc oxide eugenol cement?

  1. Zinc oxide

  2. Eugenol

  3. Water

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

Zinc oxide eugenol cement is a type of dental restorative material that is primarily composed of zinc oxide and eugenol, which is an essential oil derived from cloves.

Multiple choice

What is the main component of mineral paint?

  1. Oil

  2. Water

  3. Minerals

  4. Pigment
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mineral paint is a type of paint that uses minerals as its main binder. The minerals are mixed with pigments to create the desired color.

Multiple choice

Which of the following is NOT a common type of biocide used in marine corrosion control?

  1. Chlorine

  2. Bromine

  3. Copper

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

Zinc is not commonly used as a biocide in marine corrosion control. Chlorine, bromine, and copper are more commonly employed.