Q5. There is one word missing in the following sentences. Write the correct answer in the blank.
Is necessity the mother ___________ {of , in, for , from} invention? Well, not always. Determined to find a cheap sustainable fuel, ___________ {with , to , in , into } a fuel similar to diesel.
Q6. Fill in the blanks with one word only :
After a series of tests in a sustained three year effort, Thiyagarajan (i) ----------------- (finally / equally/swiftly/ ultimately) perfected the device and applied for a patent. C S M Sundaram, Thiyagarajan's guide, said the device was the (ii) -----------------(consequence / result / effort / work ) of backbreaking (iii) ------------- (Result / task /work/ proposal) persistence and dogged tenacity.
