31) The compressive strength of ordinary cement is less than its tensile strength.

• (a) Right
• (b) Wrong

32) Four bags of cement (50 kg each) will require ........... litres of water

• (a) 20
• (b) 40
• (c) 90
• (d) 150

33) The percentage of the residue left after sieving good Portland cement in 90 micron sieve should not exceed

• (a) 5%
• (b) 10%
• (c) 20%
• (d) 30%

34) The expansion in Portland cement can be tested by

• (a) fineness test
• (b) soundness test
• (c) setting time test
• (d) normal consistency test

35) The specific surface (in cm2/g) of a good Portland cement should not be less than

• (a) 500
• (b) 1100
• (c) 2250
• (d) 3200