List of top Chemistry Questions

Identify the correct order of acidic strength:
Find the products X, Y in the following reaction sequence:
When blood cells are placed in 1% (w/v) NaCl aqueous solution:
Correct order of basicity of the following is:
Identify the correct statement: (A) Nitriles react with Grignard Reagent followed by hydrolysis to give carbonyl compounds, (B) Aldehyde reacts with alcohol to form hemiacetal, (C) Carbonyl compounds are converted to corresponding acetal to increase chemoselectivity, (D) Carbonyl compound reacts with $2^{\circ}$ amines to form enamines.}
Match List - I (Conversion) with List - II (Name of the reaction): (A) Pyridine $\rightarrow$ 2-Amino pyridine, (B) Salicylaldehyde $\rightarrow$ Catechol, (C) Toluene $\rightarrow$ Benzaldehyde, (D) Homologation of carboxylic acids
Match List - I (Name of the reaction) with List - II (Conversion): (A) Elbs reaction, (B) Reimer-Tiemann reaction, (C) Kolbe reaction, (D) Claisen rearrangement
Match List - I (Structure of Amino acid) with List - II (Name of the Amino acid):
Which of the following statements are correct about aromatic compounds?
Following are the identification tests of alcohols: (A) $1^{\circ}$ alcohol gives red, (B) $2^{\circ}$ alcohol gives blue, (C) $3^{\circ}$ alcohol gives green, (D) $1^{\circ}$ alcohol gives yellow in Victor Meyer Test.}
Identify the correct sentences about alkene reactions: (A) Alkenes undergo electrophilic addition, (B) Alkenes undergo nucleophilic addition in general, (C) Saytzeff's rule favors more substituted alkenes, (D) Alkenes are inert towards peracids.
$\lambda_{max}$ in UV spectrum of the given cyclic enone structure is:
Reaction of Glucose with Excess acetic anhydride gives:
Correct order of pKa values of following acids is:
Relative reactivity of the following compounds towards displacement reaction is:
Product formed in the following reaction is:
How many N-H Stretching bands observed in the IR spectrum of primary Amines ($R-NH_2$)?
Pulegone on reaction with $KMnO_{4}$ forms:
Identify the compound which shows mass spectrum: $m/z = 60$ (100%), $m/z = 61$ (3%), $m/z = 62$ (0.2%)
Which one of the following is used as internal standard in NMR analysis?
Relative rate of alkaline hydrolysis of the following compound: 4-R-ethyl benzoate where R is: (A) $NO_2$, (B) $Cl$, (C) $H$, (D) $CH_3$, (E) $OCH_3$
Assertion (A): Enantiomers are inseparable on simple column chromatography. Reason (R): Enantiomers bind achiral stationary phase with equal affinity and Enantiomers can be separated by using chiral stationary phase.
Assertion (A): In $S_N1$ reaction racemic mixture is formed and in $S_N2$ reaction inversion of configuration is observed. Reason (R): $S_N1$ reaction is concerted mechanism and $S_N2$ reaction involves carbocation intermediate.
Assertion (A): HBr addition to alkenes gives Markonikov addition. Reason (R): HBr addition to alkene in the presence of peroxide gives Anti-Markonikov addition as the reaction proceeds via radical mechanism.
Assertion (A): Carbon halogen bond in aryl and vinyl halides are unusually shorter. Reason (R): Chlorobenzene and vinyl chlorides undergo $S_N1$ and $S_N2$ reaction in general.