In the electroplating of gold the electrolyte used is?
1). Gold chloride
2). Gold nitrate
3). Gold sulphate
4). Potassium aurocyanide
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1. The polymerisation of which of the following is used in manufacturing of polythene in industry ?
2. The metal that is usually extracted from sea water is
4. The atmospheric gas that is mainly responsible for Green House effect :
5. The acid rain destroys vegetations because it contains
6. Magnesium (Mg) + Oxygen $(O_{2})$ = ?
8. Which of the following in automobile exhaust can cause cancer?