Consider the following state- ments about mixture- 1. substance can be sepa- rated into other kinds of matter by any physical pro- OZSS. 2. Dissolved sodium chloride can be separated from water by the physical process of evaporation. Which of the statemen

examrobotsa's picture

Submitted by examrobotsa on

Q: (CDS-II/2019)
Consider the following state- ments about mixture-
1. substance can be sepa- rated into other kinds of matter by any physical pro- OZSS.
2. Dissolved sodium chloride can be separated from water by the physical process of evaporation.
Which of the statements given above is/are correct?

question_subject: 

Science

question_exam: 

CDS-II

stats: 

0,16,23,3,16,20,0

keywords: 

{'sodium chloride': [1, 0, 0, 1], 'evaporation': [0, 0, 0, 4], 'substance': [2, 1, 7, 7], 'water': [65, 15, 80, 129], 'physical process': [0, 0, 1, 0], 'matter': [0, 0, 1, 0]}

The correct answer is option 2, which states that only statement 2 is correct. Let`s analyze each statement to understand why.

Statement 1 states that a substance can be separated into other kinds of matter by any physical process. This statement is incorrect because while some mixtures can be separated by physical processes, not all substances can be separated in this way. For example, chemical reactions and processes like electrolysis are required to separate some substances.

Statement 2 states that dissolved sodium chloride can be separated from water by the physical process of evaporation. This statement is correct because when a solution of sodium chloride in water is heated, the water evaporates, leaving behind the solid sodium chloride. This process is a physical separation technique called evaporation.

Therefore, only statement 2 is true, making option 2 the correct answer. The alert is not needed in this case.