Find the area (in cm²) of a semi-circle of radius 21 cm.
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Which one of the following is not a borderline element?
In the following series, one letter is missing as shown by the ?. Select the missing letter from the given options.
N, L, J, H, ?
What is the pH value of human blood?
The Biography of Humayun was written by ___________.
Which of the following is NOT an effect of Noise Pollution?
What is the type of Energy possessed by a stretched rubber band?
Before Champaran Satyagraha, the farmers of Champaran used to follow the 'Panchkathiya' system, whereby five katthas of land in a bigha had to be planted with ___.
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