Haematite is an ore/mineral of
1). Zinc
2). Iron
3). Lead
4). Manganese
1. For a spontaneous chemical process, the free energy change is
3. Muscles get tired when there is shortfall of ___________.
4. Question 3.1:What is the basic theme of organisation in the periodic table?
5. Cooking gas is a mixture of
6. The most electronegative element among the following is
7. The washing machine works on the principle of ____________