MCQ of Metals and Non Metals
Metals and Non Metals MCQ questions:- 1. Physical nature of most of the ionic compounds is May exist in any state wrong liquid solid correct gas 2. Which of the following is/are oxide ore(s)? Bauxite Cuprite Hematite All of these correct 3. Horn silver is a/an halide ore correct sulphide ore sulphate ore oxide ore 4. Greenish coating that develops on copper utensils is due to formation of C u C O 3 C u C O 3 correct C u ( O H ) 2 C u ( O H ) 2 C u O C u O C u ( O H ) 2 ⋅ C u C O 3 C u ( O H ) 2 ⋅ C u C O 3 5. Which of the following is used in reduction of alumina? Electricity correct Coke Aluminum Carbon monoxide 6. Which of the following conditions are necessary for rusting of iron? Presence of water only Presence of air only Presence of water and air both correct None of these 7. Food cans are coated with tin and not with zinc because zinc is more reactive than tin correct zinc has higher melting point than tin zinc is costlier than tin...