In the Ostwald process, the catalyst used for the oxidation of ammonia is:
A. Iron
B. Platinum
C. Nickel
D. Vanadium pentoxide
Answer: Option B
Solution (By JKSSB Mock Tests)
The Ostwald process is used to manufacture nitric acid. The first step involves the catalytic oxidation of ammonia (NH3) to nitric oxide (NO). This reaction is carried out at about 800°C using a platinum-rhodium gauge catalyst. Iron is used in the Haber process, and V2O5 in the Contact process.
Explanation:
Gamma rays are high-frequency electromagnetic waves emitted from the nucleus. They have very high penetration power and are used in cancer therapy.
Explanation:
Silk is a natural protein fiber obtained from silkworm cocoons. Nylon, polyester, acrylic are synthetic polymers derived from petrochemicals.
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