General Science Questions Answers for CTET/STET - 13 June 2014

1. Which of the following is the hardest substance available on earth?
[A]Gold
[B]Diamond
[C]Platinum
[D]Quartz


2. The oxide of nitrogen used in medicine as anaesthetic is _______________.
[A]Nitrous oxide
[B]Nitric oxide
[C]Nitrogen pentoxide
[D]Nitrogen dioxide


3. What is the process of removal of top soil by water or wind called?
[A]Soil creep
[B]Soil erosion
[C]Silting of soil
[D]Soil wash


4. What is the smallest functional and structural unit of kidney called?
[A]Ureter
[B]Nephron
[C]Aorta
[D]Renal artery


5. The use of _______________ gives a modern biologist better insight into the internal structure of cells.
[A]Electron microscope
[B]Ultracentrifuge
[C]Super Computer
[D]Spectrophotometer