Choose an appropriate word from the options to suitably fill the blank in the sentence below so that the sentence makes sense, both grammatically and contextually. They are very clever but . . . . . class teacher isn’t so much.
A). they
B). their
C). them
D). theirs
their
They are very clever but their class teacher isn’t so much.
2. The period of a waveform is:
5. The current gain of a transistor is defined as the ratio of the collector current to the
6. Which one of the following principles best describes the basic operation of a generator?
7. PVC is obtained by the polymerisation of
8. A polymeric substance used to make parachute is
9. The name of plastic polymer from which combs, toys, bowls etc., can be made, is
10. The basic chemical building block of natural rubber obtained from trees is