Which among the following alloys contains mercury as one of its constituents?

During the extraction of iron from hematite in a blast furnace,which substance is obtained as slag?

Which among the following statements is incorrect for magnesium metal?

What is thermit reaction? How is it used to join the railway tracks or cracked machine parts?

Give reasons for the following:
$(i)$ Ionic compounds have high melting and boiling points.
$(ii)$ Ionic compounds are soluble in water.
$(iii)$ Ionic compounds are solid and somewhat hard.
$(iv)$ Ionic compounds conduct electricity in the molten state.
$(v)$ Metals have a tendency to lose electrons.

Which of the following is not a neutral oxide?