Which form of silica has the highest specific gravity ?

Related Mcqs:

Fusion point of a basic refractory material is________________?

A. Reduced by the addition of acid oxides B. Increased by the addition of acid oxides C. Not affected by the addition of acid oxides D. Always less than 1000°C...

The vapour pressure of a solution (made by dissolving a solute in a solvent) is ____________ that of the pure solvent?

A. Less than B. More than C. Equal to D. Either more or less; depends on the solvent...

A sample of well water contains 140 gm/m3 Ca2+ ions and 345 gm/m3 Na+ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO3 in gm/m3 is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16) ?

A. 350 B. 485 C. 140 D. 345...

Heat of neutralisation of a strong acid and strong base is always a constant value, i.e., 57 KJ/Kg mole. This is because_________________?

A. The strong base and strong acid reacts completely B. The salt formed does not hydrolyse C. Only OH- and H+ ions react in every case D. The strong base and strong acid reacts in aqueous solution...

6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H2 produced will be ______________ gm?

A. 0.5 B. 1 C. 3 D. 5...