Which one among the following is the correct order of amount of lime (CaO), silica (SiO2), alumina (Al2O3) and ferric oxide (Fe2O3) in Portland cement
Composition of portland cement - CaO - 61-63%; SiO2 - 17-25%; Al2O3 - 4-8%; Fe2O3 - 0.5-0.6%;
Which one among the following nitrogen compounds has the least percentage of nitrogen by mass
The following equation is an example of a redox reaction, in which Cl2 is the oxidizing agent and FeBr3 is the reducing agent:
2FeBr3(aq) + 3Cl2(g) = 2FeCl3(aq) + 3Br2(l)Which one among the following statements if incorrect for this redox reaction?
Which of the following is not a micronutrient for a plant?
A glass of water does not turn into ice as it reaches 0o C. It is because
Sometimes, indigestion is caused by the secretion of too much hydrochloric acid in the stomach. To ease the pain caused, a tablet can be taken that reacts to reduce the amount of acid present. Which one among the following would be inappropriate for a manufacturer to include as a major reactant in the tablet?
