In an electrolytic cell where electrolysis is carried, anode has? Mark as favorite Copy Link Connected to negative terminal of the battery Negative charge Positive change None of these is correct Check Answer
Which of the following are exothermic processes? (i) Reaction of water with quick lime (ii) Dilution of an acid (iii) Evaporation of water (iv) Sublimation of camphor (crystals)? Mark as favorite Copy Link (iii) and (iv) (i) and (iv) (i) and (ii) (ii) and (iii) Check Answer
In which of the following chemical equations the abbreviations represent the correct states of the reactants and Products involved at reaction temperature? Mark as favorite Copy Link 2H2(l) +O2(l) -> 2H2O (g) 2H2(g) +O2(l) -> 2H2O (l) 2H2(g) +O2(g) -> 2H2O (l) 2H2(g)+O2(g) -> 2H2O(g) Check Answer
Silver article turns black when kept in the open for a few days due to formation of? Mark as favorite Copy Link Ag2S AgS AgSO4 H2S Check Answer
What type of chemical reactions take place when electricity is passed through water? Mark as favorite Copy Link Decomposition Double displacement Displacement Combination Check Answer
Consider the given statements and choose the incorrect one? Mark as favorite Copy Link The bubbles of hydrogen gas are produced, when zinc granules reacts with dilute sulphuric acid None of the above Hydrogen gas is evolved when dilute hydrochloric acid is poured over sodium carbonate Hydrogen gas is evolved when magnesium reacts with a dilute acid Check Answer
A substance ‘X’ is used in white-washing and is obtained by heating limestone in the absence of air. Identify ‘X’? Mark as favorite Copy Link CaCO3 CaOCl2 CaO Ca (OH)2 Check Answer
In the double displacement reaction between aqueous potassium iodide and aqueous lead nitrate, a yellow precipitate of lead iodide is formed. While performing the activity if lead nitrate is not available, which of the following can be used in place of lead nitrate? Mark as favorite Copy Link Potassium sulphate Ammonium nitrate Lead acetate Lead sulphate (insoluble) Check Answer
Electrolysis of water is a decomposition reaction. The molar ratio of hydrogen and oxygen gases liberated during electrolysis of water is Problems? Mark as favorite Copy Link 1 : 2 1 : 1 4 : 1 2 : 1 Check Answer
When S02 gas is passed through saturated solution of H2S, which of the following reaction occurs? Mark as favorite Copy Link SO2 + H2O -> SO3 + H2 SO2 + 2H2S -> 2H20 + 3S SO2 + H2S -> H2O + S SO2 + 2H2S -> H20 + 3S Check Answer