Q. While passing hydrogen over heated CuO(s), black color is oxidized to

View solution

Q. Reaction of Lead Oxide (PbO) and Hydrogen Gas (H₂) leads to

View solution

Q. After accepting electrons, Manganate Mn(VII) ion becomes oxidized to

View solution

Q. In electrolysis of copper purification, at cathode

View solution

Q. A reductant

View solution

Q. Displacement reaction occurs when

View solution

Q. Metals are good at

View solution

Q. In Copper Oxide (CuO) and Carbon Monoxide (CO) reaction, oxidizing agent is

View solution

Q. Reduction involves

View solution

Q. Less vitamins and valuable nutrients are destroyed if the

View solution

Q. Change of orange color of Chromium(VI) (Cr+6) to green color of Chromium(III) (Cr+3) indicates presence of a

View solution

Q. Exothermic reactions are

View solution

Q. When dichromate (VI) ion becomes reduced to chromium (III) ion, a change of color occurs from

View solution

Q. Reducing agents does not include

View solution

Q. At high temperatures, enzymes...

View solution

Q. If Potassium Iodide (KI) acts as oxidizing agent, change occurs from, indicates presence of

View solution

Q. In Copper(II) Oxide (CuO) and Carbon Monoxide (CO) reaction,

View solution

Q. On hydration, [Al(H₂O)₆]³⁺ (aq) produces

View solution

Q. The oxidation number of Si in SiCl₄ is

View solution

Q. The solution is turned acidic upon hydration of AlCl₃, because

View solution