Advertisements
Advertisements
प्रश्न
State why hydrogen is not prepared in the laboratory by the action of lead with dilute hydrochloric acid.
Advertisements
उत्तर
With lead dil. HCl forms PbCl2 which is in soluble and forms coating and stops the further reaction.
APPEARS IN
संबंधित प्रश्न
From the knowledge of activity series, name a metal which shows the following properties:
It displaces hydrogen from hot water.
Hydrogen can be prepared with the metal zinc by using: alkali
Give an equation.
Choose the correct option:
Hydrogen is evolved by the action of cold dil. HNO3 on
What do you observe when hydrogen gas is passed through a soap solution?
Which metal gives hydrogen with all of the following: water, acids, alkalis?
Which of the following metals does not give hydrogen with acids?
Choose terms from the options given in brackets to complete this sentence.
Sodium ………………. reacts smoothly with cold water.
(metal, amalgam, in the molten state)
Correct the following statement:
Conc. H2SO4 reacts with zinc to liberate hydrogen.
Name the following.
A metal below iron but above copper in the activity series of metals which has no reaction with water.
Name the following.
A metal which cannot be used for the preparation of hydrogen using dilute acids.
