What is the value of sin 7π/4c?
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How long does a train, 75 m long, moving at 60 km/hr take to pass a certain telegraph post?
Who is the captain of the Indian men's volleyball team as of February 2018?
If waste materials contaminate the source of drinking water, which of the following diseases will spread?
The elements known as primary nutrients for plants
Which method will be employed to test the hardness of water?
The passage of an electric current through a conducting liquid causes ___________.
____ is the most electropositive and ___ is the most electronegative element of the third period of modern periodic table.