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.)
Benzaldehyde reduces ............. but not the ............. .

Explanation

To fill in the blanks in the statement "Benzaldehyde reduces ............. but not the .............", we need to identify the appropriate words from the options provided.

1. **Understanding the context**: Benzaldehyde is an aromatic aldehyde. It can participate in certain reduction reactions, specifically with Tollen's reagent, which is used to test for aldehydes.

2. **Identifying the first blank**: Benzaldehyde can reduce Tollen's reagent, which is also known as the silver mirror test. Therefore, the first blank should be filled with "silver mirror".

3. **Identifying the second blank**: Benzaldehyde does not reduce Fehling's solution, which is a test for aldehydes that contains copper(II) ions. Therefore, the second blank should be filled with "Fehling's test".

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