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Assertion, A: Presence of Ba2+, Sr·, and Ca2 + must be tested in the same order. Reasoning, R: Otherwise, testing for Sr2+ first may be mistaken for the precipitates of BaS04 or SrS04 Similarly, testing for Ca2 + first may be mistaken for the precipitates of oxalates of Ba2+, Sr2+. or Ca2 + (1) A and R both are correct and R is the correct explanation of A. (2) A and R both are correct but R is not the correct explanation of A. (3) A is incorrect while R is true. (4) A is true but R is false.

Assertion, A: Presence of Ba2+, Sr·, and Ca2 + must be tested in the same order. 
Reasoning, R: Otherwise, testing for Sr2+ first may be mistaken for the precipitates of BaS04 or SrS04 Similarly, testing for Ca2 + first may be mistaken for the precipitates of oxalates of Ba2+, Sr2+. or Ca2 + 
(1) A and R both are correct and R is the correct explanation of A. (2) A and R both are correct but R is not the correct explanation of 
A. 
(3) A is incorrect while R is true. 
(4) A is true but R is false. 

Grade:12th pass

1 Answers

Vikas TU
14149 Points
5 years ago
I think (4) one is the correct one.
Beacause all have valency +2 and would form the displacement reaction product.
like BaSO4 and SrSO4 has same sulphate ions so doesn’t matter if are tesetd together.

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