A. KClO3 heated in a sealed tube
B. Na2CO3 heated in a closed vessel
C. CaCO3 heated in a closed vessel
D. CH4 heated with excess of O2 in a closed vessel
Vicinal dihalide (C2H4Br2) on heating with excess alc.KOH and Zinc dust gives ’y’ and ‘z’ respectively. Both ‘y’ and ’z’ on oxidation with Bayer’s regent gives A and B.A and B respectively are
In the extraction of copper, the slag formed in the blast furnace
The time for half life of a first order reaction is 1 hour. What is the time taken for 87.5% completion of the reaction
For the reaction H2(g)+I2(g)⇔2HI(g) at 721 K,the value of equilibrium constant KC is 50.The value of KP under the same conditions will be
Which of the following brings about dry bleaching
148mg of Ca(OH)2 is required to remove hardness of one lit. of hard water by Clarke’s process. If hardness is due to only calcium bicarbonate, what is the degree of hardness of sample of water?
The addition of HCl will not suppress the ionization of
The weakest acid among the following is
Ultrapure elements are obtained in the following method of metal refining
In dry cell cathode is