| 1. | The metal that melts even when kept on the palm is ? | |
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Cobalt
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Mercury
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Nickel
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Gallium
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Report Question| 2. | The stainless steel is an alloy of ? | |
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Nickel and chromium
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Iron, nickel and chromium
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Iron and chromium
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Iron and nickel
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| 3. | Which of the following property is generally not shown by metals ? | |
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Electrical conduction
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Ductility
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Sonorous in nature
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Dullness
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| 4. | During electrolytic refining of zinc, it gets ? | |
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Remains in the solution
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Deposited on cathode as well as anode
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Deposited on cathode
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Deposited on anode
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| 5. | Silver articles become black on prolonged exposure to air. this is due to the formation of ? | |
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Ag3N
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Ag2S and Ag3N
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Ag2O
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Ag2S
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| 6. | Which non-metal is the best conductor of electricity ? | |
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Bromine
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Graphite
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Phosphorus
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silicon
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| 7. | The lightest liquid metal is ? | |
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Fr
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Cs
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Ga
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Hg
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| 8. | Non-metals form covalent chlorides because ? | |
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they cannot share electrons with chlorine atoms
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they can give electrons to chlorine
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they can give electrons to chlorine atoms to form chloride ions
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they can share electrons with chlorine
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| 9. | Which of the following non-metal is lustrous ? | |
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Nitrogen
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Oxygen
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Iodine
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Sulphur
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| 10. | Which of the following is purest form of carbon ? | |
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Fullerene
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Charcoal
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Diamond
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Graphite
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