In which of the following animals is respiration done by skin?
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In which of the following kinds of organism is the phenomenon found wherein the female kills the male after copulation
For which one of the following snakes is the deit mainly composed of other snakes?
Among the following animals , the figures of which are found in the state emblem of india?
Refer National symbols
Which one of the following types of laser is used in laser printers?
'Pencillin' which is used as an antibiotic is obtained from
Special 3-D photographs which have been taken with laser beams (and which make the objects look real) are called what?
Which of the following is used in pencils?
A pencil is an implement for writing or drawing. It is a thin core of graphite well mixed with clay, inside a wooden body as protective casing that prevents the core from being broken.