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  1. Assertion (1) is TRUE and Assertion (2) is FALSE
  2. Both Assertion (1) and Assertion (2) are TRUE
  3. Both Assertion (1) and Assertion (2) are FALSE
  4. Assertion (1) is FALSE and Assertion (2) is TRUE
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1 Answers

Option 4 : Assertion (1) is FALSE and Assertion (2) is TRUE

As per clause 8.2.2.3 of IS 456-2000, entrained air percentage of 3 to 6% is required to resist freezing and thawing i.e. not meant for marine environment.

∴ Assertion 1 is wrong.

Equivalent alkali content in terms of Na2O = + 0.685

                                                                   = 1 + 0.685 × 0.6 = 1.41 %

Hence, Assertion 2 is correct.
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