A. weak base
A.
B. wear acid
B.
C. strong base
C.
D. strong acid
D.
Correct Answer: C
সঠিক উত্তর: C
Explanation
ব্যাখ্যা
Sodium hydroxide (NaOH) is classified as a strong base. This is because it dissociates completely in water, producing a high concentration of hydroxide ions (OH-). The high concentration of OH- ions contributes significantly to the solution's pH, making it a strong base. A concentrated sodium hydroxide solution can have a pH of 14.