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CBSE Board Exams 2020 - Datesheet Released For Remainig Papers | Class 10 Boards | Class 12 Boards

CBSE Class 10 Social Science - Most Important MCQs - Live Discussion | Part - 1 | CBSE Board 2020

Class 10 Complete Science UP Board 2024 Exam Full Revision and Syllabus | Target 95+

(a). What effect does the concentration of H^(+) (aq) ions have on the nature of a solution? (b). What effect does the concentration of OH^(-) ions have on the nature of a solution? (c). Someone put some universal indicator paper into vinegar. The pH is 3. What does this tell you about the vinegar? (d). Someone put some universal indicator paper onto wet soap. the pH is 8. What does this tell you about the soap? (e). State whether a solution is acidic, alkali or neutral if its pH is: (i) 9 (ii) 4 (iii) 7 (iv) 1 (v) 10 (vi) 3.

Savitri had to make a model of a cylindrical kaleidoscope for her science project.She wanted to use chart paper to make the curved surface of the kaleidoscope.(see Fig 13.10) What would be the area of chart paper required by her,if she wanted