PALLAVI MODEL SCHOOL BOWENPALLY CLASS –X METALS AND NON METALS I. Write True and false 1. The composition of aqua-regia is Conc. HCl: Conc. HNO 3 is 3: 1 2. Metals are electronegative in nature 3. Sodium chloride conducts electricity in solid state 4. Chlorine is a half metal 5. Cassiterite is not an ore of iron 6. Electrical wires have a coating of an PVC insulting material 7. Duralumin is a mixture of Copper and tin? 8. Sodium Metal that can be easily cut with a knife 9. The impurities (sand, silt, soil, gravel, etc.) present in the ore are called gangue.
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