In which of the following situations is mechanical energy most likely to be conserved?
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Through which does light travel best?
The method of soil conservation in which stones, grass, soil are used to build barriers along contours and trenches are made in front of the barriers to collect water is called?
Any undesirable change in physical, chemical or biological characteristics of air, land, water or soil is called?
Who among the following is the executive head of state in India?
Which of the following has become the first country in the world to pay equal salary to men and women?
Which among the following countries is facing debt crisis?
Who of the following was the last Governor General of Bengal?