Assertion :An aq. soln. of NH3 is a weak base and a weak electrolyte. Reason: Ammonia is a weak base and it combines with acids to form salts. With HCl it reacts to form ammonium chloride. 99.4% os ammonia molecules are protonated but does not completely ionize so it is a weak base and electrolyte.
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Assertion is correct but Reason is incorrect
Both Assertion and Reason are incorrect
A
Both Assertion and Reason are incorrect
B
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
C
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
D
Assertion is correct but Reason is incorrect
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Solution
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Ammonia is a weak base and it combines with acids to form salts. With HCl it reacts to form ammonium chloride. 99.4% os ammonia molecules are protonated but does not completely ionize so it is a weak base and electrolyte.
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Q1
Assertion :An aq. soln. of NH3 is a weak base and a weak electrolyte. Reason: Ammonia is a weak base and it combines with acids to form salts. With HCl it reacts to form ammonium chloride. 99.4% os ammonia molecules are protonated but does not completely ionize so it is a weak base and electrolyte.
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Q2
Assertion: The impurities such as SiO2 present in iron ore is removed by CaCO3.
Reason: CaO formed by decomposition of CaCO3 reacts with SiO2 to form slag.