हाइड्रोजन के निम्नलिखित में से किस स्थिति में प्राकृतिक रूप से धात्विक अवस्था में मौजूद होने का अनुमान लगाया गया है?

Consider the following statements regarding hydrogen peroxide: Statement I: H2O2 acts as an oxidising as well as a reducing agent in both acidic and basic media. Statement II: A '10V' H2O2 sample means it contains 6% (w/v) H2O2. Select the correct option:

Which of the following statements correctly describe the properties and applications of heavy water (D2O)? I. It is employed in certain nuclear reactors to slow down fast neutrons. II. Compared to normal water, it shows stronger hydrogen bonding. III. It boils at a lower temperature than ordinary water. IV. It is chemically more reactive as a solvent than H2O. Select the correct answer using the code below: