Gypsum is added to cement clinker to
A). Increase the tensile strength of cement
B). Decrease the rate of setting of cement
C). Facilitate the formation of colloidal gel
D). Bind the particles of calcium silicate
Decrease the rate of setting of cement
Decrease the rate of setting of cement.
1. Wax used for making candle is chemically a mixture of
2. Which of the following shows the masses of the three elementary particles in decreasing order?
3. The velocity of sound is more of
4. The most important ore of aluminum is
5. When pressure is increased the melting point of ice
7. The gas which turns into liquid at the lowest temperature among the following is
9. Which one of the following elements is least likely to be found in commercial fertilisers?
10. The polymerisation of which of the following is used in manufacturing of polythene in industry ?