Question

Sulphur in cement is present in what amount?

(a) 0.5 – 6 g

(b) 1 – 2.5%

(c) 0.5 – 6%

(d) 1 – 2.5g

I had been asked this question in a national level competition.

Query is from Ingredients of Cement in division Materials for Construction of Basic Civil Engineering

Answer 1

Correct choice is (b) 1 – 2.5%

To explain: The presence of ingredients is expressed in percentage.  Iron oxide is present in 0.5-6% and sulphur 1-2.5%.