Column-I contains four statements following reason and Column-II consists of four options P, Q, R, S. Answer the following : P - If both statement and reason are true and reason is correct explanatio

Question

Column-I contains four statements following reason and Column-II consists of
four options P, Q, R, S. Answer the following : P -> If both statement and 
reason are true and reason is correct explanation of statement. Q -> If both 
statement and reason are true and reason is not correct explanation of 
statement. R -> If statement is correct and reason is incorrect. S -> If both 
statement and reason are incorrect.

Prashant Kotian · Accepted Answer

Correct answer: A-S, B-P, C-Q, D-R. Step 1: Heating borax on a platinum wire loop forms a transparent, glassy bead of sodium metaborate (NaBO2) and boric anhydride (B2O3). Step 2: When this hot bead is touched to a transition metal salt and heated again, the metal oxide reacts with B2O3 to form colored transition metal metaborates. Step 3: Because the characteristic colored beads are formed by these specific transition metal metaborates, option (c) is the correct choice.

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