List of top Chemistry Questions

Which of the following is the correct order of acidic strength for the following compounds: HNO$_3$, HClO$_4$, and HClO$_3$?

O$_2$ gas will be evolved as a product of electrolysis of:
(A) an aqueous solution of AgNO3 using silver electrodes.
(B) an aqueous solution of AgNO3 using platinum electrodes.
(C) a dilute solution of H2SO4 using platinum electrodes.
(D) a high concentration solution of H2SO4 using platinum electrodes.
Choose the correct answer from the options given below :

Consider the above reaction, what mass of CaCl₂ will be formed if 250 ml of 0.76 M HCl reacts with 1000 g of CaCO₃?

The standard reduction potential values of some of the p-block ions are given below. Predict the one with the strongest oxidizing capacity.

Given below are two statements:

Statement I: Experimentally determined oxygen-oxygen bond lengths in the $ O_2 $ are found to be the same and the bond length is greater than that of a $ O=O $ (double bond) but less than that of a single $ O-O $ bond.

Statement II: The strong lone pair-lone pair repulsion between oxygen atoms is solely responsible for the fact that the bond length in ozone is smaller than that of a double bond $ O=O $ but more than that of a single bond $ O-O $.

In light of the above statements, choose the correct answer from the options given below:

In an oxidation-reduction reaction, what happens to the oxidation state of the central atom in $ \text{MnO}_4^- $ when it is reduced to $ \text{Mn}^{2+} $?

The major product of the following reaction is:

The compounds that produce CO$_2$ with aqueous NaHCO$_3$ solution are:

Which of the following is an example of antifertility drug?

Explain with reason:
(i) Cr^{2+} is a reducing agent while Mn^{3+} is an oxidising agent, while both have $d^4$ configuration.}

Calculate the potential for half-cell containing 0.01 M K$_2$Cr$_2$O$_7$(aq), 0.01 M Cr$^{3+}$(aq), and 1.0 x 10$^{-4}$ M H$^+$(aq).

Concentrated nitric acid is labelled as 75%by mass. The volume in mL of the solution which contains 30 g of nitric acid is: Given: Density of nitric acid solution is 1.25 g/mL.

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	0.1113	111.3
0.100	0.0129	129.0
0.010	0.00141	141.0

The correct IUPAC name for $ CH_2 = CHCH_2NHCH_3 $ is:

State Henry's law. Why are aquatic species more comfortable in cold water as compared to warm water?

State Raoult’s law for a solution containing volatile components. Why is the vapour pressure of an aqueous solution of glucose lower than that of water?

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:

In the given reaction sequence, the structure of Y would be:

Assume a living cell with 0.9%($w/w$) of glucose solution (aqueous). This cell is immersed in another solution having equal mole fraction of glucose and water. (Consider the data up to first decimal place only) The cell will:

Given below are two statements:

Statement (I):
are isomeric compounds.

Statement (II):
are functional group isomers.

In the light of the above statements, choose the correct answer from the options given below:

The conversion of phenol to salicylic acid can be accomplished by

The effect of temperature on the spontaneity of reactions are represented as: Which of the following is correct?

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

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