Bavitaa Foundation Chemistry Quiz-4

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| By Vennis_neni

Vennis_neni

Community Contributor

Quizzes Created: 3 | Total Attempts: 422

Questions: 5 | Attempts: 137 | Updated: Mar 20, 2023

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Questions and Answers

1.
- A.
  
  A)
- B.
  
  B)
- C.
  
  C)
- D.
  
  D)
Correct Answer
D. D)
2.

Water is often treated with chlorine to:
- A.
  
  Make it sweet
- B.
  
  Make it salty
- C.
  
  Kill germs in it
- D.
  
  Make it colourless
Correct Answer
C. Kill germs in it

Explanation
Chlorine is commonly used to treat water because it has strong disinfectant properties. It effectively kills germs and bacteria present in the water, making it safe for consumption. This process helps to prevent the spread of waterborne diseases and ensures that the water is clean and free from harmful microorganisms.

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3.

The change given below is an example of:
- A.
  
  Physical change
- B.
  
  Chemical change
- C.
  
  Both a) & b)
- D.
  
  Neutralization reaction
Correct Answer
B. Chemical change

Explanation
The change given in the question is an example of a chemical change. In a chemical change, the substances involved undergo a chemical reaction, resulting in the formation of new substances with different properties. This is different from a physical change, where the substances involved do not undergo a chemical reaction and only their physical properties change. Since the change given in the question involves a chemical reaction, it is classified as a chemical change.

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4.

Pick out the crystalline substance from the following
- A.
  
  Coal
- B.
  
  Wax
- C.
  
  Clay
- D.
  
  Sugar
Correct Answer
D. Sugar

Explanation
Sugar is the only crystalline substance among the options provided. Crystalline substances have a regular, repeating pattern in their molecular structure, resulting in a well-defined shape and form. Sugar, also known as sucrose, forms crystals when it solidifies. On the other hand, coal, wax, and clay do not have a crystalline structure and do not form regular repeating patterns.

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5.

Which of the following is/ are in a liquid state normally? a) b) c) d)
- A.
  
  Water
- B.
  
  Petrol
- C.
  
  Mercury
- D.
  
  All of them
Correct Answer
D. All of them

Explanation
Water, petrol, and mercury are all substances that are normally in a liquid state. Water has a melting point of 0 degrees Celsius and a boiling point of 100 degrees Celsius, which means it exists as a liquid at room temperature. Petrol, or gasoline, is a liquid fuel that is commonly used in vehicles and has a low boiling point. Mercury is a heavy metal that is liquid at room temperature and commonly used in thermometers. Therefore, all of the options listed (water, petrol, and mercury) are in a liquid state normally.

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Current Version
Mar 20, 2023

Quiz Edited by
ProProfs Editorial Team
Mar 09, 2011

Quiz Created by
Vennis_neni

Bavitaa Foundation Chemistry Quiz-4

Water is often treated with chlorine to:

The change given below is an example of:

Pick out the crystalline substance from the following

Which of the following is/ are in a liquid state normally? a) b) c) d)