✓ Board-verified
Science · 2023 · 1 mark
CBSE 2023 · Region 2 · Set 2 · Q17
Assertion (A): Sodium, calcium and magnesium are obtained by the electrolysis of their molten oxides. Reason (R): These metals have more affinity for…
Assertion (A) : Sodium, calcium and magnesium are obtained by the electrolysis of their molten oxides. Reason $\displaystyle (R)$ : These metals have more affinity for oxygen than carbon.
Official answer
(D)
Assertion (A) is false, but Reason (R) is true.
All Metals and Non-metals questions2023 question paperNCERT solutions: Metals and Non-metalsPractice Metals and Non-metals →
More from Metals and Non-metals
- (i) It is observed that covalent compounds are bad conductors of electricity. Give reason. (ii) Carbon can neither form C^4+ cation nor C^4- anion.…2023
- A metal, M, displaces iron from aqueous solution of ferrous sulphate but fails to do so in case of aqueous solution of aluminium sulphate. The metal…2025
- Sodium metal is stored under kerosene oil. Why? Some metal oxides are soluble in water. What are the aqueous solutions of these oxides called? Write…2024
- List two advantages of adopting the atomic number of an element as the basis of classification of elements in the Modern Periodic Table. Write the…2022
- Consider the following organic compounds: (i) (ii) Name the functional group present in their compounds. Write the general formula for the compounds…2022
- Attempt either or: (i) Write one example each of one metal that is so soft that it can be cut with a knife, and one non-metal that is a good…2026
- Cinnabar is an ore of a metal 'X'. When this ore is heated in air, it is first converted into oxide of 'X' (XO) and then reduced to metal 'X' on…2025
- Which of the following is an alloy of copper and tin?2024
CBSE Class 10 Science past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.