Which of the following solutions will not change the colour of blue litmus paper to red? 1. Acid solution 2. Base solution 3. Common salt solution Select the correct answer using the code given below.

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Q: 105 (CDS-I/2014)

Which of the following solutions will not change the colour of blue litmus paper to red?
1. Acid solution
2. Base solution
3. Common salt solution
Select the correct answer using the code given below.

question_subject: 

Science

question_exam: 

CDS-I

stats: 

0,17,25,8,17,7,10

keywords: 

{'common salt solution': [0, 0, 0, 1], 'acid solution': [0, 0, 0, 1], 'solutions': [0, 0, 2, 3], 'blue litmus paper': [0, 0, 0, 1], 'base solution': [0, 0, 0, 1], 'colour': [11, 6, 13, 28], 'red': [1, 0, 0, 0]}

The correct answer is option 2, which states that both a base solution and a common salt solution will not change the color of blue litmus paper to red.

To understand why, let`s dissect each option:

1. Acid solution: An acid solution will change the color of blue litmus paper to red. Acids have a pH level below 7, making them acidic. When an acid comes into contact with blue litmus paper, it causes a chemical reaction that turns the litmus paper red.

2. Base solution: A base solution will not change the color of blue litmus paper to red. Bases have a pH level above 7, making them alkaline. When a base comes into contact with blue litmus paper, it does not cause a chemical reaction that changes the color.

3. Common salt solution: A common salt solution will also not change the color of blue litmus paper to red. Common salt, also known as sodium chloride, is a neutral compound. When dissolved in water, it dissociates into sodium ions (Na+) and chloride ions (Cl-), which do not have any acidic or basic properties. As a result, it does not change the color of blue litmus paper.

In conclusion, both a base solution and