19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The major product formed from the following reaction is (AFMC 2010) (a) (b) (c) (d)
An organic compound A burns with a sooty flame. It is negative towards Tollen’s reagent test and positive for Brady’s reagent test. The compound A is (KCET 2011)
Which of the following organic compounds answers both iodoform test Fehling’s test? (KCET 2013)
Ozonolysis (Reductive) X Y Z -> Y can be obtained by Etard’s reaction, Z undergoes disproportion reaction with concentrated alkali ,X could be (KCET 2014) (a) (b) (c) (d)
(i)CH MgBr (i)Dil.NaOH (ii) (ii)H O P R -> -> 4-methylpent-3-en-2-one compound P is (KCET 2014)
The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha-carbon is (NEET 2016)
The IUPAC name of the compound (NEET 2017) is
Conc.NaOH O|| H C H CH CH O -> Find out the products of reaction (AIIMS 2019)
Identify compound X in the following sequences of reactions : (NEET 2021) (a) (b) (c) (d)
Which of the following forms an enol to the greatest extent ? (a) (b) (c) (d)
Which of the compound shown is (are) correctly named as pentane derivates, either as pentanals or pentanones ?
When enolate A is compared with enolate B (A) (B) which of the following statements is true ?
Which of the following is paradehyde?
Ethanedial has which functional group ?
The structure would be best classified as a(n)
Acetals are
Formalin is an aqueous solution of :
A strong base can abstract an alpha-hydrogen from
The formula of chloral is (a)퐶퐻3퐶퐻= 푁퐻퐶6퐻5
[NEET 2019] 4d, 5p, 5f and 6p orbitals are arranged in order of decreasing energy. The correct option is
[NEET 2019] Orbital having 3 angular nodes and 3 total nodes is
[CBSE AIPMT 2015] The number of d-electrons in Fe²⁺ (Z = 26) is NOT equal to the number of electrons in which one of the following?
The correct order of increasing energy of orbitals in hydrogen atom is
Aufbau principle does NOT give the correct arrangement of filling of atomic orbitals in
The correct ground state electronic configuration of chromium atom (Z = 24) is