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Question

In each of the following questions, two statements are given: statement -1 and statement -2. Examine the statements carefully and answer the questions according to the instructions given below:

Statement 1: Phosphorus reacts with conc.HNO3 to form orthophosphoric acid.

Statement 2: H3PO4 is a tribasic acid and has three replaceable H+ ions.

A
Statement -1 is true, statement -2 is true; statement -2 is the correct explanation for statement -1.
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B
Statement -1 is true, statement -2 is true; statement -2 is not the correct explanation for statement -1.
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C
Statement -1 is true, statement -2 is false.
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D
Statement -1 is False, Statement -2 is true.
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Solution

The correct option is B Statement -1 is true, statement -2 is true; statement -2 is not the correct explanation for statement -1.
S1: P4Phosphorus+20HNO320NO2+4H3PO4orthophosphoric acid+4H2O

S2:

Statement 1 is true.
Statement 2 is true
But statement 2 is not the correct explanation for statement 1.

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