Reduction is: gain of hydrogen gain of protons gain of oxygen loss of electrons

Question

Reduction is: gain of hydrogen gain of protons gain of oxygen loss of electrons Chlorine in water acts as a(n): electron donor proton donor oxidizing agent reducing agent Which substance is the oxidizing agent used in Breathalyzer tests for drunk driving? C H_2O NaCl KNnO_4 In which one of the following is the reactant undergoing oxidation? Al_2O_3 rightarrow Al Cl_2 rightarrow 2 Cl^- CO_2 rightarrow C H_2 rightarrow 2 H^+ In the photosynthesis reaction: 6 CO_2 + 6 H_2O rightarrow C_6H_12O_6 + 6 O_2 carbon dioxide is: reduced oxidized and reduced oxidized neither oxidized nor reduced Which statement about hydrogen is FALSE? It is flammable Its isotopes have their own names. It forms a positive ion and thus is a metal. Most hydrogen has no neutrons. Aluminum is more reactive than iron, yet it is used for a variety of applications in which iron would corrode (cans, rain gutters, etc.) The reason aluminum doesn't corrode is: all aluminum products are treated with a plastic coating aluminum does not react with oxygen aluminum does not undergo oxidation very unreactive aluminum oxide forms a thin layer on aluminum Which ONE of these is a reducing agent? C CO_2 H_2O_2 F_2 Anaerobic bacteria do not need to live. Water nitrogen sugar oxygen Which bacteria cause a foul odor? Aerobic anaerobic genetically modified pathogenic

Explanation / Answer

1) a

Reduction = gain of electrons (or) gain of hydrogen

4) d

oxidation = increase in oxidation number

In d, oxidation number of H is increased from 0 to +1

Hence, d is oxidation

6) C

Hydrogen is non-metal.

9) d

Anaerobic bacteria do not need oxygen to live.

10) d

Pathogenic baceria cause a foul odor.

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