19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Correct order of basicity of various nitrogen in
Which of the following represents the correct order of the acidity in the given compounds ?
Hybridisation states of C in + CH and CH are (a) sp & sp
Which of the following orders is correct for the stability of these carbocations ?
Which of the following compounds possesses the C—H bond with the lowest bond dissociation energy?
The IUPAC name of the following compound is
The incorrect IUPAC name is (a) (b) (c) (d)
IUPAC name of is
The correct structure of 4-bromo-3-methyl but-1-ene is
Ethanol and dimethyl ether are
The IUPAC name of is
The most reactive nucleophile among the following is : (a) CH O (b) C H O
Among the following, the strongest nucleophile is : (a) C H SH (b) CH COO (c) CH NH (d) NCCH
The number of sigma electrons in toluene are
Which of the following represents the given mode of hybridisation sp -sp -sp-sp from left to right ? (a) H C CH C N
The correct structure of 2, 6-Dimethyl-dec-4-ene (NEET 2021) (a) (b) (c) (d)
The compound which shows metamerism is (NEET 2021)
Dihedral angle of least stable conformer of ethane is (NEET 2021)
A tertiary butyl carbocation is more stable than a secondary butyl carbocation because of which of the following? (NEET 2020)
The most stable carbocation, among the following is (NEET 2019)
The number of sigma () and pi ( ) bonds in pent-2- en-4-yne is (NEET 2019)
Which of the following is correct with respect to –I effect of the substituents? (R = alkyl) (NEET 2018)
Which of the following molecules represents the order of hybridisation sp2, sp2, sp, sp from left to right atoms? (NEET 2018)
The correct statement regarding electrophile is (NEET 2017)
The IUPAC name of the compound is _____. (NEET 2017)