The compressive strength of cement should not be less than about 110Kg/cm2 after three days & not less than 170Kg/cm2 after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about ________________ cm2/gm?

Related Mcqs:

Permanent hardness of water can be removed by_________________?

A. Addition of soda ash to it B. Treating it with zeolites C. Passing it through sodium hexametaphosphate D. All A , B, and C....

Hydrazine is used in water treatment for the removal of___________________?

A. Colloidal impurities B. Dissolved oxygen C. Turbidity D. Chlorinous taste...

Commonly used glass is known as the _______________ glass?

A. Flint B. Hard C. Pyrex D. Soda...

Zeolite is a/an___________________?

A. Naturally occuring clay which is capable of exchanging cations B. Abrasive material C. Catalyst used in shift conversion D. None of these...

Oils are partially hydrogenated (not fully) to manufacture Vanaspati, because fully saturated solidified oils________________?

A. Cause cholesterol build up and blood clotting B. Are prone to rancid oxidation C. Always contain some amount of nickel (as their complete removal is very difficult) D. Have affinity to retain harmful sulphur compounds...