1.
In extraction of copper, the flux used is
2.
Food cans are coated with tin and not with zinc because
3.
Which of the following methods is suitable for preventing an iron frying pan from rusting?
4.
Generally, non-metals are not conductors or electricity, which of the following is a good conductor of electricity?
5.
Which of the following is purest form of carbon?
6.
Alloys are homogeneous mixtures of a metal with a metal or non-metal. Which among the following alloys contain non-metal as one of its constituents?
7.
Which of the following properties is generally not shown by metals?
8.
Which among the following alloys contain mercury as one of its constituents?
9.
Galvanisation is a method of protecting iron from rusting by coating with a thin layer of
10.
The most abundant element in the universe is:
