List of top Chemistry Questions

\(NH_3\) molecule attract \(H^+\) ion towards itself to form ammonium ion \({NH}_4^+\) through:

In the redox reaction \[ \text{MnO}_4^- + \text{C}_2\text{O}_4^{2-} \to \text{Mn}^{2+} + \text{CO}_2 + \text{H}_2\text{O} \] The correct coefficients of \( \text{C}_2\text{O}_4^{2-} \) and \( \text{H}^+ \) are

Consider the following reaction sequence of alkene. \[ \text{CH}_3\text{CH} = \text{CH}_3 \xrightarrow{\text{O}_3} A \xrightarrow{\text{H}_2\text{O}} B \] What is the product B?

For the reactions \(C + O2 \rightarrow CO2\); \(\, \Delta H = -393 \, \text{kJ} 2Zn + O2 \rightarrow 2ZnO\), \(\, \Delta H = -412 \, \text{kJ}\) \(\text{the correct statement is:}\)

Which among the following is the strongest acid?

A cell has been set up as shown in the following diagram and E$^0$ has been measured as 1.00V at 25°C. Calculate $\Delta$G$^0$ for the reaction.

An aqueous solution of 2% (wt/wt) non-volatile solute exerts a pressure of 1.004 bar at the boiling point of the solvent. What is the molecular mass of the solute?
Which of the following is the correct Lewis structure for the ionic compound Ca(ClO2)2?
Select the incorrect statement.
The decreasing order of reactivity towards electrophilic addition of the following is: I. CH = CH
II. CH_2 = CH_2
III. H_2C = CH - Cl
Which of the following statements is not correct?
Which of the following statement is applicable for the Tyndall effect?
Which of the following flux is used to remove acidic impurities in metallurgical processes?
On reduction of glycolic acid with HI, the product formed is
A catalyst will change all of the following except
The metallic sodium dissolved in liquid ammonia to form a deep blue colour solution. The deep blue colour is due to the formation of
The ozone layer forms naturally by
Silica is a network solid of silicon and oxygen atoms. The empirical formula for silica is SiO₂. In silica, to how many oxygen atoms is each silicon bonded?
Rate of dehydration of alcohols follows the order
Which of the following is used as a food preservative?
Bakelite is obtained by reaction of phenol with
Curve X on the graph below shows the volume of oxygen formed during the catalytic decomposition of a 1.0 mol dm$^{-3}$ solution of hydrogen peroxide.

Which change would produce the curve Y?
As temperature is increased, the equilibrium of a gaseous reaction will always
A work is done on the system such that one mole of an ideal gas at 400K is compressed isothermally and reversibly to 1/10th of its original volume. The amount of (use R=2 cal) work done will be
Which one of the following is the correct statement?