List of top Chemistry Questions

What is the action of : (i) Liquid bromine in acetic acid on anisole. (ii) Soda-lime on sodium acetate?
At T(K), a gaseous mixture contains H\(_2\) and O\(_2\). The total pressure of the mixture is 2 bar. The weight percentage (w/w) of H\(_2\) is 33.33%. What is the approximate ratio of partial pressure of H\(_2\) and O\(_2\)?
Write short notes on the following:
(i) Carbylamine reaction
(ii) Hofmann–bromamide reaction
(iii) Diazotisation
The correct order of atomic radii of C, Al and S is
Account for the following: (a) The dipole moment of chlorobenzene is lower than that of cyclohexylchloride.
Write structures of the following compounds: (i) 2-Chloro-3-methylpentane
(ii) 1,4-dibromobut-2-ene
(iii) 1-Bromo-2,2-dimethylpropane
(iv) 1-Bromo-2-methylbut-2-ene
(v) 1-Chloro-2-methylbenzene
What do you understand by these following terms? Give one example of each.
(i) Aldol (ii) Schiff's base (iii) Cannizaro's reaction (iv) Oxime (v) Acetal
How can these conversions be done? Give chemical equations only.
(i) Propan-2-ol from propene (ii) Benzyl alcohol from benzyl chloride (iii) Propan-1-ol from ethyl magnesium chloride (iv) 2-methyl propan-2-ol from methyl magnesium bromide (v) Picric acid from phenol
Which of the following is an example of antifertility drug?
Based on the data given above, give plausible reason for the variation of conductivity and molar conductivity with concentration.
Concentration of KCl solution (mol/L)Conductivity at 298.15 K (S cm-1)Molar Conductivity at 298.15 K (S cm2 mol-1)
1.000 0.1113111.3
0.1000.0129129.0
0.0100.00141141.0
The correct IUPAC name for \( CH_2 = CHCH_2NHCH_3 \) is:
How many coulombs of electricity is required to produce 1g of sodium metal by reduction of sodium ion?
The element that has the highest melting point in the 3d series is:
An alcohol X (C$_4$H$_{10}$O) reacts with Conc.HCl/ZnCl$_2$ to give corresponding chloride. X on dehydration forms Y, which reacts with Baeyer's reagent to give Z. What is Z?
Observe the following set of reactions
2-Methylpropene $\xrightarrow{\text{HBr}, (\text{CH}_3\text{COO})_2}$ Y
2-Methylpropene $\xrightarrow{\text{HBr}}$ X
Correct statement regarding X and Y is
Explain optical activity, chirality, retention, inversion and racemisation in Haloalkane.
Identify the compound which is least reactive towards nucleophilic substitution reactions.
What are X and Y respectively in the following set of reactions?
The sequence of reagents required to convert benzoic acid to n-propyl benzene is
The catalyst used in the preparation of high density polythene is
Permanganate titrations cannot be performed satisfactorily in presence of HCl. The reason is
The hormone 'X' increases glucose levels in blood. Low levels of other hormone 'Y' causes lethargyness. What are X, Y respectively?
Consider the following statements
Statement I: At room temperature H$_2$O is a liquid while H$_2$S is a gas
Statement II: H$_2$O is neutral while H$_2$S is acidic.
The correct answer is
The number of non-ionizable valences of Co$^{3+}$ and Pt$^{4+}$ ions in the complexes CoCl$_3\cdot5$NH$_3$ and PtCl$_4\cdot5$NH$_3$ is respectively
Which of the following sets are correctly matched?
i. P$_2$O$_3$, N$_2$O$_4$ - acidic
ii. N$_2$O, NO - neutral
iii. SeO$_3$, TeO$_3$ - basic
iv. As$_2$O$_3$, Sb$_2$O$_3$ - amphoteric
The correct option is