Advertisements
Advertisements
प्रश्न
Give reason for the following:
Nitric acid is used in purification of gold.
उत्तर
Nitric acid is used in the purification of gold because impurities of other metals are dissolved in it.
APPEARS IN
संबंधित प्रश्न
Write balanced equations for Action of heat on a mixture of copper and concentrated nitric acid
What do you observe when?
Hydrogen sulphide is bubbled through conc. HNO3?
Complete and balance the following equation :
C + HNO3 → ___________
Complete and balance the following equation :
Fe + HNO3(conc.) → _____________
Give two chemical tests to distinguish between dilute nitric acid and hydrochloric acid.
What do you see when concentrated nitric acid is added to copper?
Write the equation for the laboratory preparation of nitric acid from potassium nitrate and concentrated sulphuric acid.
Write the equation for the reaction:
Aluminum, Nitride and Water.
Copy and complete the following table relating to important industrial processes output refers to the product of the process not the intermediate steps.
| Name of process | Inputs | Catalyst | Equation for catalysed reaction | Output |
| Haber process | Hydrogen + | |||
|
Ammonia + |
Nitric acid |
A dilute acid B does not normally give hydrogen when reacted with metals but does give a gas when reacts with copper. Identify B. Write the equation with copper.
