Home›MPPSC Forest›State Forest Service Mains Exam›Section 'B': Forestry and General Science›UNIT-06: Chemistry›Acids and bases, pH scale (simple numerical questions), exothermic and endothermic reactions›What is pH of 10⁻⁴M NaOH solution ?

What is pH of 10⁻⁴M NaOH solution ?

20183M#mppsc-forest#pyq#mcq#2018
A.4
B.10Correct
C.7
D.12
Explanation & Solution

Correct Answer: (B) 10

For a 10⁻⁴M NaOH solution, the concentration of OH⁻ is 10⁻⁴ M, giving pOH = 4. Since pH + pOH = 14 at 25°C, the pH value of the solution is 14 - 4 = 10.

हिंदी में प्रश्न एवं आदर्श उत्तर

10⁻⁴M NaOH विलयन का pH मान क्या होगा?

A.4
B.10सही
C.7
D.12

सही उत्तर: (B) 10

10⁻⁴M NaOH विलयन के लिए OH⁻ की सांद्रता 10⁻⁴ M है, जिससे pOH = 4 प्राप्त होता है। 25°C पर pH + pOH = 14 होता है, अतः विलयन का pH मान 14 - 4 = 10 होगा।

See this question in context →
Free Android App

Practice Better on the StatePYQ Mobile App

⚡ Error Diary · ⏱ Timed Mains Answer Pacer · 📴 Offline Revision Vault

Get it onGoogle Play