Benzophenone can be converted into benzene using

The correct order of rate of reaction toward nucleophilic addition reaction for the following compounds is:
$(a)$ $p-NO_2-C_6H_4-CHO$
$(b)$ $C_6H_5-CHO$
$(c)$ $p-OMe-C_6H_4-CHO$
$(d)$ $CH_3-CO-CH_2CH_3$
$(e)$ $C_6H_5-CO-C_6H_5$

Which of the following pairs is differentiated by the iodoform test?

Two moles of benzaldehyde and one mole of acetone under alkaline conditions using aqueous $NaOH$ after heating gives $x$ as the major product. The number of $\pi$ bonds in the product $x$ is.................

The mixed aldol products obtained from the aldol condensation of ethanal $(CH_3CHO)$ and propanone $(CH_3COCH_3)$ are:

Which of the following compounds,upon hydrolysis followed by heating,gives a product that yields a positive iodoform test?