Question

Assertion :Amylase in the presence of sodium chloride i.e., Na* ions are catalytically very active. Reason: Metal ions such as $N{a}^{+}$, $M{n}^{2+}$, $C{o}^{2+}$, $C{u}^{2+}$, etc. act as activators.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

• Substances, which accelerate the rate of a chemical reaction and themselves remain chemically and quantitatively unchanged after the reaction, are known as catalysts.
  
• Promoters are substances that enhance the activity of a catalyst while poisons decrease the activity of a catalyst.
• Metal ions when weakly bonded to enzyme molecules increase their catalytic activity.
• $N{a}^{+},M{n}^{2+},C{o}^{2+},C{u}^{2+}$ , etc.act as activators.
• Hence, both assertion and reason are correct and also reason is the correct explanation for the assertion.