PPSC 2015 (General Studies) Previous Year Paper

Which printer uses a combination of laser beam and electrophotographic techniques?

The electronic configuration of an atom is 1s ², 2s ², 2p ⁵. The number of unpaired electrons in this atom are

Which property of water makes it a good solvent?

Consider the following statements:

1. Radon is the heaviest gas.

2. Astatine is a rarer element on Earth.

3. Graphite is an allotrope of carbon.

Which among the above statement(s) is/are correct?

Which of the following ecosystem types has the highest annual net primary productivity?