Practice free Chemistry NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Which molecules/ions are most paramagnetic?
Use MOT
B2 is most paramagnetic due to presence of two unpaired electrons.
Which has linear shape but not sp hibridisation ?
In & , the hibridisation state of central atom is sp3d but shape is linear.
Which of the following structure is most expected for the molecule XeOF4 ?
XeOF4 is an oxyfluoride of xenon, with xenon in the +6 oxidation state. The molecule has a square pyramidal shape, with the xenon atom at the center, surrounded by 4 fluorine atoms in a square planar arrangement and 1 oxygen atom at the apex.
Which has highest bond energy ?
CO is not a homo-nuclear atom like C2, N2 or even O3, O3 (both these categories are different: with and without 2s-2p mixing). So there is a large discrepancy in the atomic energy levels of 2s, 2p e- of C and O.As a result, 2p(pi)x, 2p(pi)y and 2p(sigma)z have lower energy than 2s(sigma)*. So the e- lost is from 2s(sigma)*2 and not 2p(sigma)z. And hence the bond order increases from 3 to 3.5 and not decreases to 2.5 . (The typical school textbook formula doesn't work for species like CO,CO+ and even NO,NO+ in many situations)
Which has highest bond angle ?
Fact, 2nd period element having min lone pair ,is having max bond angle
Which is mismatched regarding the shape ?
XeO3 = Pyramidal shape
The isostere pair is
Isostere pairs are those in which total number of atom and total number of e-s are same
Select the correct order of solubility (in water) from the following:
solubility of salt having smaller anion increases down the group and larger anion decreases down.
Which of the following exhibits H-bonding?
N2H4 (hydrazine) exhibits hydrogen bonding due to the presence of N-H bonds. Hydrogen bonding occurs when a hydrogen atom is covalently bonded to a highly electronegative atom like N, O, or F, allowing it to form a weak attractive interaction with another electronegative atom.
Amongst the one with highest boiling point is:
H2O has highest boiling point due to H-bonding
Ready to ace NEET?
Free access · No credit card required
Yes. You can attempt every Chemistry 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.