Iron is not used alone as a catalyst in ammonia synthesis, because (A) Its activity declines rapidly, if heated to above 520°C (B) It decomposes ammonia (C) It gets oxidised above 500°C (D) None of these

Iron is not used alone as a catalyst in ammonia synthesis, because
(A) Its activity declines rapidly, if heated to above 520°C
(B) It decomposes ammonia
(C) It gets oxidised above 500°C
(D) None of these
by

1 Answer

Answer :

(A) Its activity declines rapidly, if heated to above 520°C
by

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__________ glass is used in the mercury in glass thermometer meant for measuring a temperature of 500°C. (A) Borosilicate (B) High silica (C) Supermax (D) Lead

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The industrial process of producing ammonia by the reaction of nitrogen with hydrogen in the presence of catalyst is called?

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Last Answer : Haber process

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Last Answer : (C) Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld

One mole on iron [55.8 gm], when oxidised to `+2` oxidation state gives up :

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How many compound(s) or iron (s) can be oxidised by `H_(2)O_(2)` among the following (i) `AsO_(3)^(2)` (ii) `SO_(4)^(2-)` (iii) `Fe_(2) (SO_(4))_(3)`

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Pick up the correct statement from the following: (A) In basic Bessemer process, the steel heats the converter (B) In open-hearth process, the furnace heats the steel (C) In Siemens process, the impurities of pig iron are oxidised by the oxygen of the ore (D) All the above

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Last Answer : (C) Gasified