Question 1: Which of the following metals can be used for making wires?
Question 2: Which of the following metals does not react even with concentrated hydrochloric acid?
Question 3: Which of the following metals reacts vigorously with water?
Question 4: Which metal is generally used for making a sewing needle?
Question 5: Which metal is used for making the filament of a bulb?
Question 6: Which metal is used in thermometer?
Question 7: Which of the following is an example of non-metal with lustre?
Question 8: Which of the following metals is the most reactive metal?
Question 9: Which of the following metals is the least reactive metal?
Question 1: Define metal?
Answer: Metal is a substance which is lustrous, sonorous, ductile, and is a good conductor of heat and electricity.
Question 2: Define non-metal?
Answer: Non-metal is a substance which is non-lustrous, non-sonorous, non-ductile, and is a bad conductor of heat and electricity.
Question 3: What do you understand by malleability?
Answer: Metals can be beaten into thin sheets. This ability is called malleability.
Question 4: What do you understand by ductility?
Answer: Metals can be drawn into thin wires. This ability is called ductility.
Question 5: What is sonority?
Answer: Metals produce a ringing sound when beaten with something. This ability is called sonority.
Question 6: What is lustre?
Answer: The typical shine on a metal is called lustre.
Question 7: What is the chemical formula of iron oxide?
Answer: Fe2O3
Question 8: What is the chemical formula of magnesium oxide?
Answer: MgO
Question 9: What is the chemical formula of copper hydroxide?
Answer: Cu(OH)2
Question 10: What is the chemical formula of copper carbonate?
Answer: CuCO3
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