Identify the name of the reaction when an aldehyde or ketone reacts with $Zn-Hg / \text{conc. } HCl$ to give an alkane.

How can $A$ and $B$ be differentiated?

$n$-hexane $\xrightarrow{Al_2O_3/\Delta} (A)$ $\xrightarrow{(CO + HCl)/AlCl_3} (B)$. Select the incorrect statement among the following:

Upon reaction with $CH_3MgBr$ followed by protonation,the compound that produces ethanol is

Both ethanal and propanone will react with which of the following?

Following compounds are given:
$(i) CH_3-CH_2-OH$
$(ii) CH_3-CO-CH_3$
$(iii) CH_3-CH(OH)-CH_3$
$(iv) CH_3-OH$
Which of the above compound$(s)$,on being warmed with iodine solution and $NaOH$,will give iodoform?