Advertisements
Advertisements
Question
Choose terms from the options given in brackets to complete this sentence.
Sodium ………………. reacts smoothly with cold water.
(metal, amalgam, in the molten state)
Advertisements
Solution
Sodium amalgam reacts smoothly with cold water.
APPEARS IN
RELATED QUESTIONS
Hydrogen can be prepared with the metal zinc by using:
acid
Give an equation.
Give an equation to express the reaction between:
Steam and red hot iron
A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.
Name the gas formed in the reaction. How would you test the gas?
Thin strips of magnesium, copper, and iron are taken.
Write down what happens when these metals are treated as follows:
- Heated in presence of air
- Heated with dil.HCl
- Added to an aqueous solution of zinc sulphate.
Which metal is preferred for collecting hydrogen from Cold water? Write the balanced equation.
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
Correct the following statement:
Conc. H2SO4 reacts with zinc to liberate hydrogen.
State why hydrogen is not prepared in the laboratory by the action of calcium with dilute sulphuric acid.
Name the following.
A metal which cannot be used for the preparation of hydrogen using dilute acids.
