Question
Question: Match the column I with column II and mark the appropriate choice. <table> <colgroup> <col style="w...
Match the column I with column II and mark the appropriate choice.
Column I | Column II | ||
---|---|---|---|
(A) | Li | (i) | Role in biological systems |
(B) | K | (ii) | Golden yellow flame |
(C) | Na | (iii) | Photoelectric cell |
(D) | Cs | (iv) | Carbonate decomposes on heating |
A
(A) → (iv), (A) → (i), (A) → (iii), (A) → (ii)
B
(B) → (i), (B) → (iii), (B) → (ii), (B) → (iv)
C
(C) → (iii),(C) → (ii), (C) → (i), (C) → (iv)
D
(D) → (iv), (D) → (i), (D) → (ii), (D) → (iii)
Answer
(D) → (iv), (D) → (i), (D) → (ii), (D) → (iii)
Explanation
Solution
: Li2CO3 decomposes on heating K plays vital role in biological systems. Na imparts golden yellow colour to the flame. Cs is used in devising photoelectric cells.