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Question

Assertion :Fishes can survive in tap water but not in a jar of freshly boiled distilled water. Reason: Distilled water lacks many ions like Na,K.Cl,Ca,Mg. It is important to supplement distilled water when using it for fishkeeping, it is too pure to sustain proper chemistry to support an aquarium ecosystem.
  1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
  2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
  3. Assertion is correct but Reason is incorrect
  4. Both Assertion and Reason are incorrect

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B
Assertion is correct but Reason is incorrect
C
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
D
Both Assertion and Reason are incorrect
Solution
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Distilled water lacks many ions like Na,K.Cl,Ca,Mg. It is important to supplement distilled water when using it for fishkeeping, it is too pure to sustain proper chemistry to support an aquarium ecosystem.

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Similar Questions
Q1
Assertion :Fishes can survive in tap water but not in a jar of freshly boiled distilled water. Reason: Distilled water lacks many ions like Na,K.Cl,Ca,Mg. It is important to supplement distilled water when using it for fishkeeping, it is too pure to sustain proper chemistry to support an aquarium ecosystem.
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Q2
Assertion
If BOD level of water in reservoir is less than 5 ppm it is not polluted.

Reason
High biological oxygen demand means low activity of bacteria in water.
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Q3
For the following Assertion and Reason, the correct option is:
Assertion: The pH of water increases with increase in temperature.

Reason: The dissociation of water into H+ and OH an exothermic reaction.
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Q4
Assertion: The compressibility factor for H2​ and He is (1+PbRT)
Reason: The compressibility factor for H2​ and He can be derived from Van der Waal's equation.
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Q5

Assertion

Lithium sulphate does not form alums.

Reason

Li+ is too small to form a stable lattice required for double-salt/alum formation.


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