Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: A mixture contains benzoic acid and naphthalene. The pure benzoic acid can be separated out by the use of benzene.
Reason R: Benzoic acid is soluble in hot water.
In the light of the above statements, choose the most appropriate answer from the options given below.
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: A mixture contains benzoic acid and naphthalene. The pure benzoic acid can be separated out by the use of benzene.
Reason R: Benzoic acid is soluble in hot water.
In the light of the above statements, choose the most appropriate answer from the options given below.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is NOT the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
The Correct Option is A
Solution and Explanation
The correct option is(D): A is false but R is true.
Since, both benzoic acid and naphthalene will dissolve in benzene. Hence assertion is wrong.
Benzoic acid is almost insoluble in cold water but soluble in hot water. Hence Reason is true.
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List I List II A. Antipyretic I. Reduces pain B. Analgesic II. Reduces stress C. Tranquilizer III. Reduces fever D. Antacid IV. Reduces acidity (stomach)
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Concepts Used:
Antacids
To neutralize stomach acids antacids type of drug are used. This tablet contain substances such as calcium, sodium bicarbonate, and magnesium, which act as base in the stomach.
Antacids can be used to treat a variety of symptoms caused by too much stomach acid, including:
- Regurgitation
- Bitter taste
- Persistent dry cough
- Pain while lying down
- Difficulty in swallowing.
- Heartburn is a burning sensation in your chest or throat caused by acid reflux.
- Abdominal pain (also known as the sour stomach)
- Nausea can be caused by a variety of illnesses which includes inflammation or acid-peptic ulcers of the oesophagus, gastritis and etc.
Types of Antacids:
- Aluminium Carbonate Antacids
- Calcium Carbonate Antacids
- Magnesium Carbonate Antacids