Which of the following can neither be created nor be destroyed?
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‘SwasthVayu’, a Non-invasive Ventilator, was developed by which organsiation?
Which of the following is natural fiber?
Earth revolves around Sun. Who was the 1st one to present this theory?
__________ acts as a shield absorbing ultraviolet radiation from the sun.
________ perform Internet Protocol blocking to protect networks from unauthorized access.
Preservation of historical articles is done in science of ________________
"Trade unions" is listed in the __________ list given in the Seventh Schedule of the Constitution of India.