A. Sodium hydroxide
A.
B. Ammonium hydroxide
B.
C. Magnesium hydroxide
C.
D. Calcium hydroxide
D.
Correct Answer: B
সঠিক উত্তর: B
Explanation
ব্যাখ্যা
The most common base found in window cleaners is ammonium hydroxide. It's a solution of ammonia in water, which is known for its cleaning properties and ability to evaporate easily. Ammonium hydroxide is a weak base, meaning it doesn't fully dissociate into ions when dissolved in water.