The first fertilizer plant in India was set up at :
The concept of sustainable development relates to
निम्नलिखित में से कौन सा कथन 'पेटेंट' के संदर्भ में सही नहीं है?
Which method of water purification does not kill micro-organisms?
Who among the following was a contemporary of Changiz Khan?
Who was called 'Frontier Gandhi'?
किसी तत्व के समस्थानिक से तात्पर्य है।
