The reaction of Copper Sulphate and Iron produces Iron Sulphate and __________.
1). Vinegar
2). Ash
3). Baking Soda
4). Copper
1. The presence of Cobalt in Vitamin B12 was established for the first time by
2. Which one of the following is used for dating very old objects of archaeological importance?
3. Of the following commonly used materials, the one that is not an alloy is
4. Nucleons are regarded as composites sub-particles known as
5. Citric acid is present in free form in
7. The gas produced in marshy places due to decomposition of vegetation is
8. When formaldehyde and potassium hydroxide are heated, we get