Advertisements
Advertisements
प्रश्न
Write correctly the balanced equation for the following:
‘When zinc filings are added to a concentrated solution of sodium hydroxide’.
Advertisements
उत्तर
\[\ce{Zn + 2NaOH ->\underset{\text{[sodium zincate]}}{Na2ZnO2} + H2}\]
APPEARS IN
संबंधित प्रश्न
Give reason for the following:
A pop sound produced when hydrogen is burnt?
State four uses of hydrogen:
Define catalytic hydrogenation.
FILL IN THE BLANK
Hydrogen is present abundantly in the ................
FILL IN THE BLANK
Ammonia is used to make ................
Write the balanced equation and give your observation when the following metal reacts:
Magnesium with boiling water
Give the balanced equation of the reaction.
Choose terms from the options given in brackets to complete this sentence.
A metal …………….. hydrogen in the activity series gives hydrogen with …………… acid or …………… acid.
(above, below, dilute hydrochloric, concentrated hydrochloric, dilute sulphuric).
Give equations for the reactions.
Give balanced equation for the following conversion:
Water gas to hydrogen – industrially.
Select the correct options for the following statement:
The gas which has now replaced hydrogen in air balloons is ___.
Give a chemical test to distinguish between the following gases:
Hydrogen and oxygen
Give a chemical test to distinguish between the following gases:
Ammonia and hydrogen chloride
How can you obtain hydrogen from sodium hydroxide [not by electrolysis].
Write down the “word equation” for the following reaction:
sodium hydroxide solution + zinc → ?
What do you observe when a piece of sodium is dropped into cold water?
