In antacid preparation aluminum hydroxide is added with magnesium salt because -
Ans is 'b' i.e., To counteracts constipating effect of aluminum hydroxide o Magnesium salts are laxative and aluminium salts are constipating and the combination of both salts neutralises each other's action and bowel movement may be least affected.
Magnesium caused constipation
To counteracts constipating effect of aluminum hydroxide
To counteract the diarrhea action of aluminum
Aluminum salt causes diarrhea