Advertisements
Advertisements
प्रश्न
What do you observe when dilute sulphuric acid is added to granulated zinc?
Advertisements
उत्तर
When Zinc reacts with dilute sulphuric acid, hydrogen gas is evolved with an effervesence.
Zn + dil. H2SO4 → Zn SO4 + H2.
APPEARS IN
संबंधित प्रश्न
Give one example each of which illustrates the following characteristics of a chemical reaction:
evolution of a gas
Write the chemical equation for the event.
A reaction was brought about between ferric oxide and aluminium.
State what is meant by the ‘reactivity series of metals’
With reference to Acid explain with a suitable example of how the reactivity of the metals could be differentiated.
Observe the following diagram and identify the type of reaction and write observation.

Which among the following alloys contain mercury as one of its constituents?
A metal A, which is used in thermite process, when heated with oxygen gives an oxide B, which is amphoteric in nature. Identify A and B. Write down the reactions of oxide B with HCl and NaOH.
Give the steps involved in the extraction of metals of low and medium reactivity from their respective sulphide ores.
Of the three metals X, Y and Z. X reacts with cold water, Y with hot water and Z with steam only. Identify X, Y and Z and also arrange them in order of increasing reactivity.
An element A burns with golden flame in air. It reacts with another element B, atomic number 17 to give a product C. An aqueous solution of product C on electrolysis gives a compound D and liberates hydrogen. Identify A, B, C and D. Also write down the equations for the reactions involved.
