An effective antacid contains:

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

Sodium hydroxide

Magnesium hydroxide

Sour milk

Lime water

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Concept: An antacid neutralizes the digestive acidity. An antacid reduces the amount of acid in our stomach. A base is necessary to neutralise the acid.
For acidity in the stomach, a drug called antacid is used. To neutralize an acid, a base is required. In the given options sodium and magnesium hydroxides are basic. Sour milk contains lactic acid and lime water contains citric acid. Acidic options can be neglected.
In the remaining options, sodium hydroxide is too strong and buffering is difficult. Thus magnesium hydroxide is effective as an antacid. The reaction with acid in the digestive system is given below;

M g (O H) 2 + 2 H C l → M g C l 2 + 2 H 2 O

Thus, magnesium hydroxide is the correct answer.
Hence, the correct answer is option 2.

Watch 3-min video & get full concept clarity

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th

🔥 Start Your JEE/NEET Prep at Just ₹1999 / month - Limited Offer! Check Now!

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th