JEE Main Chemistry Class 11 The P-Block Elements (Group 13-14) Questions

BCl3 and AlCl3, both have vacant p -orbital and incomplete octet, thus they behave as Lewis acids. SiCl4 can accept lone pair of electron in d -orbital of silicon, hence it can act as Lewis acid.
Although the most suitable answer is (d). However, both options (b) and (d) can be considered as correct answers. e.g. hydrolysis of SiCl4i.e., option (b) AlCl3 and SiCl4 is also correct.