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प्रश्न
Choose the correct answer from the option given below:
The catalyst used in the manufacture of HNO3 by Ostwald process is
पर्याय
Platinum black
Finely dividend nickel
Vanadium pentoxide
Platinum gauze
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उत्तर
Platinum gauze
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संबंधित प्रश्न
What is meant by the following term?
Decrepitation
What is the purpose of Conc. H2SO4 in the above preparation?
Nitric acid cannot be concentrated beyond 68% by the distillation of a dilute solution of HNO3, State the reason.
How can 68% nitric acid be concentrated to 98% nitric acid?
Give reason for the following:
Aluminum does not react with nitric acid of any concentration.
Give reason for the following:
Nitric acid is used in purification of gold.
Complete and balance the following equation :
Pt + HNO3 + HCl → ___________
Give the name of a soluble lead salt and write the eqution for the action of heat on this salt. Write the equation for the preparation of nitric acid from potassium nitrate.
Why does pure nitric acid take on a yellowish brown colour when exposed to light?
From the following list of substances, choose one substance in the case which matches the description given below:
Ammonium nitrate, calcium hydrogen carbonate, copper carbonate, lead nitrate, potassium nitrate, sodium carbonate, sodium hydrogen carbonate, zinc carbonate.
A Substance that gives off only oxygen when heated.
