NEET Chemistry Functional Group Tests MCQ Question
Which of the following statements about functional group tests is correct?
A basic solution indicates the presence of a carbonate or a sulphide.
Lead sulphate is soluble in alcohol and precipitates with dilute H2SO4.
No gas evolved upon heating with concentrated H2SO4 indicates the presence of chloride ions.
Heating with concentrated HNO3 is mandatory for all salts before testing for cations.
Correct Answer
Detailed Explanation
A basic solution suggests hydrolysis of salts, indicating possible presence of carbonates or sulfides. The other options misrepresent the solubility of lead sulphate and the absence of gas evolution related to specific ions.
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