Advertisements
Advertisements
प्रश्न
Give reason for the following:
Potassium and sodium are not used for reaction with dilute hydrochloric acid or dilute sulphuric acid in the laboratory preparation of hydrogen.
Advertisements
उत्तर
Potassium and sodium react violently with acid. Hence, potassium and sodium are not used for reaction with dilute hydrochloric acid or dilute sulphuric acid in the laboratory preparation of hydrogen.
APPEARS IN
संबंधित प्रश्न
Write a balanced equation for the following:
Iron reacts with dil. HCl
Choose the correct option:
Hydrogen is evolved by the action of cold dil. HNO3 on
Name two alkalies that can displace hydrogen. Give balanced equations for the same. Why are the metals you have used considered to have a unique nature?
Metal in the powdered form reacts very slowly with boiling water, but it decomposes in steam. Name the metal.
Write a balanced equation for the reaction named metal with (i) boiling water (ii) steam.
What do you observe when hydrogen gas is passed through a soap solution?
Select the odd one out and justify your answer.
Fe, Pb, Al and Zn
Helium is preferred to hydrogen for filling balloons because it is:
Which of the following metals does not give hydrogen with acids?
State why hydrogen is not prepared in the laboratory by the action of calcium with dilute sulphuric acid.
