Statement (I): Incrustation of sand occurs in rapid sand fil

Civil Engineering

M: +2.00/-0.66

Direction: Each of the question consist of two statements, one labeled as the ‘Statement (I)’ and the other as ‘Statement (II)’. Examine these two statements carefully and select the answer to these items using the codes given below:

Statement (I): Incrustation of sand occurs in rapid sand filter when water softened by lime soda is fed in for filtration.
Statement (II): The sand gets coated with precipi tates of Ca(OH)₂ and Mg(OH)₂ generated during softening of water by limesoda process which leads to incrustation of sand.

[ESE (IES) CE 2017 Technical]

A Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)

B Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)

C Statement (I) is true but Statement (II) is false

D Statement (I) is false but statement (II) is true