Blood is red in colour due to the presence of __________
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Lowering of value of currency relative to a foreign reference currency is called _________.
Sound travels at a speed of 333 m/s in the air, thus, in 1 s, a distance of 333 m is travelled by
India's first Railway University will come up at
The longest day of the year in the Northern Hemisphere occur on _____.
The source of energy in an ecosystem is
Who discovered Proton?
Which team has won the 2016 -17 Ranji Trophy?