Boojho wants to know different colours in different solutions with the help of red
litmus Paper. Consider the following sentences and choose the Correct one and help
him.
PLS HELP ME
Answers
Explanation:
m inverter show no change
Question:
Boojho wants to know different colors in different solutions with the help of red litmus paper. Consider the following sentences and choose the correct one and help him:
[A]. Milk in water shows no change.
[B]. Baking powder in water turns blue.
[C]. Blue vinegar in water source no change.
[D]. All the above.
Answer:
The correct option is option D
[D] All the above
Explanation:
Litmus is water soluble and it contains different dyes which are extracted from lichens.
It is a form of filter paper which is used to test acidity and used as pH indicator in olden days.
There are three types of Litmus paper. They are:
- Blue litmus paper - Turns to red color when the solution is acidic.
- Red litmus paper - Turns to blue color when the solution is basic or alkaline.
- Neutral litmus paper - Purple in colour
When the diprotic acid (weak acid) present in red litmus paper was exposed to the alkaline compound, the conjugated base was formed when hydrogen ions react with the base.
The conjugated acid which forms in the litmus paper has blue colour Therefore The red litmus paper changes in to blue color when it was exposed to the basic or alkaline solution.
The given statements:
[A]. Milk in water shows no change.
Explanation: Milk contain lactic acid and it has acidic pH. When red litmus paper was dipped into it no color change will be observed because it contains no acid. So, the statement is correct.
[B]. Baking powder in water turns blue.
Explanation: Baking powder is sodium carbonate salt it is basic or alkaline in nature. It reacts with the red litmus paper and changes into blue color. So, the statement is correct.
[C]. Blue vinegar in water source no change.
Explanation: Vinegar contain acetic acid and it has acidic pH. When red litmus paper was dipped into it no color change will be observed because it contains no acid. So, the statement is correct.
From this we can conclude that all the above statements are true.
Answer: Option D
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