Class X Science MCQ Extra Questions Answers Class 10 Science Terminal Exams MCQ Solutions Class 10th Science Session 2022-23 10th Science Terminal Exam Based MCQ Extra Questions

As the student wants to show that carbon dioxide is essential for photosynthesis, he sealed both the bell jars with Vaseline (- petroleum product) and placed KOH in one bell jar as KOH absorbs CO₂ gas present in the bell ...

(i) Pb + CuCl₂ → PbCI₂ + Cu (ii) Na₂SO₄ + BaCl₂ → BaSO₄ + 2NACI (iii) C+ O₂ → CO₂ (iv) CH₄ + 20₂ → CO₂ + 2H₂ O

(I) Displaces silver from the solution (II) Forms a blue coloured complex with AgNO₃ (III) Is oxidized to Cu2⁺ (IV) Is reduced to Cu2⁺

When white light enters a Prism, different colours undergo refraction and as they enter a denser medium, they bend towards the normal at different angles.