Podcast
Questions and Answers
Which of the following metals is a liquid at room temperature?
Which of the following metals is a liquid at room temperature?
- Chlorine (Cl)
- Sodium (Na)
- Mercury (Hg) (correct)
- Magnesium (Mg)
What is the main reason why copper is used for making electrical circuits?
What is the main reason why copper is used for making electrical circuits?
- Copper is a liquid at room temperature
- Copper is a good conductor of electricity (correct)
- Copper is very hard and durable
- Copper is highly reactive with other metals
Which of the following can be classified as an alloy?
Which of the following can be classified as an alloy?
- Chlorine
- Magnesium oxide
- Zinc oxide
- Brass (Cu and Zn) (correct)
Why is solder, an alloy of lead and tin, used for welding electrical wires together?
Why is solder, an alloy of lead and tin, used for welding electrical wires together?
Which metal mentioned in the text does not corrode easily?
Which metal mentioned in the text does not corrode easily?
What type of reaction occurs when metallic oxides are heated with certain metals?
What type of reaction occurs when metallic oxides are heated with certain metals?
Why is iron never used in its pure state?
Why is iron never used in its pure state?
What substance is iron mixed with to create stainless steel?
What substance is iron mixed with to create stainless steel?
What can change the properties of any metal?
What can change the properties of any metal?
How is an alloy prepared?
How is an alloy prepared?
Why is 24 carat gold not suitable for making jewellery?
Why is 24 carat gold not suitable for making jewellery?
What is added to pure gold to make it hard enough for making jewelry?
What is added to pure gold to make it hard enough for making jewelry?
Which type of oxides are aluminium oxide and zinc oxide?
Which type of oxides are aluminium oxide and zinc oxide?
What is the process known as when metals above hydrogen in the activity series displace hydrogen from dilute acids?
What is the process known as when metals above hydrogen in the activity series displace hydrogen from dilute acids?
Which metal is more reactive, sodium (Na) or magnesium (Mg)?
Which metal is more reactive, sodium (Na) or magnesium (Mg)?
What is the term used for a homogeneous mixture of two or more metals, or a metal and a non-metal?
What is the term used for a homogeneous mixture of two or more metals, or a metal and a non-metal?
In the context of metals and non-metals, which of the following statements is false?
In the context of metals and non-metals, which of the following statements is false?
Which element is known for forming chloride ions by gaining electrons?
Which element is known for forming chloride ions by gaining electrons?
