Question : Which of the following metals can deposit copper from copper sulphate solution?

Option 1: Platium

Option 2: Mercury

Option 3: Iron

Option 4: Gold

Question : Which of the following is the most abundant metal on Earth's crust?

Option 1: Magnesium

Option 2: Iron

Option 3: Copper

Option 4: Aluminium

Question : Which of the metals has the maximum thermal conductivity?

Option 1: Iron

Option 2: Aluminium

Option 3: Silver

Option 4: Copper

Question : The elements known as primary nutrients for plants are:

Option 1: nitrogen, phosphorus and potassium

Option 2: nitrogen, oxygen and silicon

Option 3: potassium, boron and nitrogen

Option 4: nitrogen, phosphorous and iron

Question : Copper wires are generally used for electrical power transmission instead of iron wire because:

Option 1: Copper is cheaper than iron

Option 2: Copper is lighter than iron

Option 3: Copper is a good conductor of electricity than iron

Option 4: Copper can take higher power than iron