(b) ReductorA shiny brown coloured element 'X' on heating in air becom – InterviewSolution

InterviewSolution

1.	(b) ReductorA shiny brown coloured element 'X' on heating in air becomes black in colour. Namethe element 'X' and the black coloured compound formed.Why do we apply paint on iron articles?ditame are flushed with nitrogen. Why?
Answer» ‘X’ is copper (Cu) and the black-coloured compound formed is copper oxide (CuO). The equation of the reaction involved on heating copper is given below.2Cu+O2---2CuO.

Discussion

No Comment Found

Related InterviewSolutions

ne Henry's law and give its two applications
25. When 2 gm of a gas A is introduced into an evaluated flaskkept at 25Â°C, the pressure is found to be one atmosphere. If3 gm of another gas B is then added to the same flask, thetotal pressure becomes 1.5 atm. Assuming ideal gasbehaviour, calculate the ratio of the molecular weightsA.B
3.Write any two applications of osmotic pres
8.What are the harmful effects of plastics especially plastic bags?
8. What are the harmful effects of plastics especially plastic bags?
14. In a group of 50 persons, 14 drink tea but not coffee and 30 drink tea. Find ((0) Hormany drink tea and coffee both () How many drink coffee but not tea.
Write the mechanisms and applications(a) Mannich reaction
Why Solids, Liquids and Gases Have Different Properties
the galvanised article is protected against rusting even if the zinc coating is broken . reason this out???
How glass wool is prepared ? Give itsapplications based on two different properties.(Ans. : Refer Section 3.3.3)