Q.1.
Amongst H2O,H2S,H2Se and H2Te, the one with the highest boiling point is -
Q.2.
Zeolite used to soften hardness of water is, hydrated
Q.3.
Granulated zinc is preferred over other metals because it
Q.4.
Hydrogen was first prepared by
Q.5.
_____________________names / coined the term Hydrogen.
Q.6.
_______________________electrodes are used during electrolysis of water.
Q.7.
Nitric acid and hydrochloric acid are
Q.8.
Current enters the electrolyte through the
Q.9.
During electrolysis anion migrate towards
Q.10.
Nitric acid , sodium hydroxide are __________________electrolyte.
Q.11.
_________________________is connected to the positive terminal of the battery.
Q.12.
Current leaves the electrolyte through the ________________.
Q.13.
Contains impurity copper which acts as a catalyst.
Q.14.
Nitric acid is an _________________________agent.
Q.15.
______________________is formed when metal reacts with water.
Q.16.
Can't react with dilute acids to liberate hydrogen
Q.17.
Hydrogen is colorless and
Q.18.
Detonating mixture
Q.19.
Impure Hydrogen burns with
Q.20.
Commercially H is prepared by