Practice free NEET NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Bauxite has the composition
Bauxite is primarily composed of $ Al_2 O_3 . 2 H_2O $, meaning it is hydrated aluminum oxide. This is the correct chemical formula for bauxite, which is a principal ore of aluminum.
Which one of the following is correct statement
$ B(OH)_3 \rightarrow H_3BO_3 (Boricacid), Al(OH)_3 \rightarrow amphoteric $
$ AlCl_3 $ is
$ AlCl_3 $ (Aluminum chloride) is anhydrous and covalent. In its anhydrous form, $ AlCl_3 $ exists as a covalent compound with a layered structure. It is not ionic in this form.
Aluminium has a great affinity for oxygen & it’s oxidation is an exothermic process. This fact is used in
Thermite welding utilizes the fact that aluminum has a great affinity for oxygen and its oxidation is an exothermic process. This reaction is highly exothermic and produces molten iron, which is used to weld metal parts together.
Which of the following is an amphoteric oxide.
$ Al_2O_3 $ is an amphoteric Oxide
When Al is added to KOH solution
$ 2KOH + 2Al + 2H_2O \rightarrow 2KAIO_2 + 3H_2 $
Aluminium is more reactive than iron. But Aluminium is less easily corroded than iron because
Aluminium is more reactive than iron, but it is less easily corroded because it forms a protective oxide layer on its surface. This thin layer of aluminium oxide prevents further oxidation and protects the underlying metal from corrosion.
Aluminium vessels should not be washed with materials containing washing soda since
Aluminium vessels should not be washed with materials containing washing soda because washing soda (sodium carbonate) reacts with aluminium to form soluble aluminate. This reaction can damage the aluminium vessel.
Which of the statements about anhydrous aluminium chloride is correct
$ FeSo_4 (NH_4)2SO_4.6H_2O $
The liquid field metal expanding on solidification is
$ Al_2 Cl_6 + 12 H_2 O \rightleftharpoons 2 [ Al (H_2O)_6 ] 3 ^ + + 6 Cl^ - $
Ready to ace NEET?
Free access · No credit card required
Yes. You can attempt every NEET question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.
No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.
The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.