State a reason why when hydrogen is passed over heated copper oxide, the resultant product fromed, differs incolour from the original reactant.

What is observed when carbon monoxide is passed over heated copper oxide.

Name all the products formed when ammonia is passed over heated copper oxide.

When ammonia is passed over heated copper oxide, the metallic coper is obtained. The reaction shows that ammonia is :

When dry ammonia gas is passed over heated sodium (out of contact of air) the product formed is

When hydrogen gas is passed over heated copper (II) oxide, copper and steam are formed. Write the balanced chemical equation for this reaction and state (i) the substance oxidized and (ii) the substance reduced in the reaction.

When dry ammonia gas is passed over heated sodium (out of contact of air) the product forms is

State one obervation for the following : Ammonia gas is passed over heated copper [II] oxide.

What happens when a mixture of acetylene and hydrogen is passed over heated nickel at 573 K?

Tertiary alcohols when passed over heated copper undergo……………….to form…………………..

Fill in the blank by choosing the appropriate word/words from those given in the brackets. (acetaldehyde, formaldehyde, benzaldehyde, yellow, white, violet, Cannizzaro's, Liebermann, no alpha -hydrogen atom, 1alpha -hydrogen atom, 2alpha -hydrogen atoms, aldol, beta -hydroxy aldehyde, aldol condensation, mixed condensation, + I,-I, -M,+ M. decreases, increases, benzalchloride, PCI, SOCh. sec, alcohol, tert, alcohol, phenylhydrozone, semicarbazone, more, less, acetals, ketals, silver mirror, test, urotropine, acetaldehyde cyanohydrin, lactic acid, benzoic acid, Sodalime, ethanoic acid, propanoic acid, electrolysis, Kolbe's electrolytic reaction, carbon dioxide, water, amides, alpha, halogen, phosphorus, weaker, stronger, ethyl alcohol, dibasic,monobasic, 2,2-dimethylpropanoic acid, CH_(3)COCI , acetic acid, CH_(3)CH_(2)CH_(2)COOK , enatiomers, diastereo, K_(a) pk_(a) , methanoic acid, higher, lower.) Ethanol vapours are passed over heated copper and the product is treated with aqueous NaOH. The final product is........