In melting of iron, which of the following reactions takes place in Bladt Furnace at 400°C- 600°C________?

Related Mcqs:

1. A sample of an iron and oxygen ore has a mass of 35.8 grams. The iron in the compound has a mass of 27.9 grams. What is the percent iron in the ore?

   A. 74% Fe B. 75% Fe C. 77% Fe D. 78% Fe Submitted by: Muhammad Ali Kunbhar...

2. In which of the following type of reactions energy of reactant is greater than energy of product________________?

   A. endothermic B. exothermic C. unpredictable D. same...

3. Which of the following reactions may be assoclated with aldehyde and ketone ?

   A. nucleophile addition B. polymerization C. oxidation D. all of the above...

4. Which of the following do not give aldol condensation reactions ?

   A. formaldehyde B. acetaldehyde C. diemthyl ketone D. propionaldehyde...

5. In a closed vessel, a gas is heated from 300K to 600 K. The kinetic energy becomes__________?

   A. Double B. Same C. Half D. Four times Submitted by: Muhammad Ali Kunbhar...

6. Across short period the melting and boiling point increase upto __________________?

   A. IIIA group B. IVA group C. VA group D. VIA group...

7. A substance having very high vapour pressure at its melting point on heating will show_______________?

   A. Melting B. Sublimation C. Decomposition D. Condensation...

8. The melting points and boiling points upto meddle of 3d- series ____________________?

   A. increases B. decreases C. remain same D. no regular trend...

9. Melting points of VII-A group elements down the group ____________________?

   A. Increase B. Decrease C. Remain constant D. No regular trend...

10. Which one of the followings possesses melting point below 0°C?

    A. Nitrogen B. Phosphorus C. Carbon D. Bismuth...