Addition of pozzolana to ordinary Portland cement increases__________________?

A. Bleeding
B. Shrinkage
C. Permeability
D. Heat of hydration

With increase in moisture content, the bulking of sand_______________?

A. Increases
B. Decreases
C. First increases to a certain maximum value and then decreases
D. First decreases to a certain minimum value and then increases

According to IS specifications, the compressive strength of ordinary portland cement after three days should not be less than________________?

A. 7 mpa
B. 11.5 mpa
C. 16 mpa
D. 21 mpa

Early attainment of strength in rapid hardening cement is mainly due to_______________?

A. Gypsum
B. Finer grinding
C. Tricalcium silicate
D. Tricalcium aluminate

For testing compressive strength of cement, the size of cube used is_______________?

A. 50 mm
B. 70.6 mm
C. 100 mm
D. 150 mm

The main constituent of cement which is responsible for initial setting of cement is_________________?

A. Dicalcium silicate
B. Tricalcium silicate
C. Tricalcium aluminate
D. All of the above

The main constituent which imparts hydraulicity to hydraulic lime is______________?

A. Calcium oxide
B. Silica
C. Clay
D. Water

Assertion A : Pure lime takes a long time to develop adequate strength. Reason R : Pure lime has slow hardening characteristics. Select your answer according to the coding system given below ?

A. Both a and r are true and r is correct explanation of a
B. Both a and r are true and r is not a correct explanation of a
C. A is true but r is false
D. A is false but r is true

Study the following statements. (1) Hydraulic lime is suitable for white washing, (2) Fat lime is suitable for whitewashing, (3) Hydraulic lime is suitable for making mortar, (4) Fat lime is suitable for making mortar. The correct answer is______________?

A. (1) and (4)
B. (2) and (3)
C. (1) and (2)
D. (3) and (4)

As per IS specifications, the maximum final setting time for ordinary Portland cement should be_______________?

A. 30 minutes
B. 1 hour
C. 6 hours
D. 10 hours