Write the chemical reactions taking place in different zones in the blast furnace for the extraction of iron from its ore.

Lime Stone is added to Blast Furnace before smelting.

Let U be the set of all students who took part in the survey. Let T be the set of students taking tea. Let C be the set of students...

2CuS (s) + C (s) => CS2 (l) + 2Cu (s) CuO (s) + C (s) => CO (g) + Cu (s) G value is more –ve in second case as compared with first...

A mercury battery, used for hearing aids and electric watches, delivers a constant voltage of 1.35 V for long periods. The half-reactions are Anode: Zn (Hg) + 2 OH ̶ → ZnO...

(a) Sulphuric acid(aq) + Zinc(s) ------> Zinc  sulphate(aq) + Hydrogen(g) H2SO4(aq) + Zn(s)  -----> ZnSO4(aq) + H2(g) (b) Hydrochloric acid(aq) + Magnesium(s) -----> Magnesiurn chloride(aq) + Hydrogen(g)   2HCl(aq) + Mg(s )   -----> MgCI2(ag) +...

i. It is a combination reaction as well as an exothermic reaction. ii. It is a double displacement reaction as well as a precipitation reaction.

1. Odisha-Jharkhand Belt- Famous for Haematite iron ore. Badampahar Mines in the Mayurbhanj and Kendujhar districts. Singhbhum district of Jharkhand. 2. Durg-Bastar-Chamdarapur Belt- High Grade Haematite ore. Chhatisgarh and Maharashtra.Bailadadila range...

The Right option is  (d) 90° W,