List of top Chemistry Questions

Among the following 0.1 m aqueous solutions, which one will exhibit the lowest boiling point elevation, assuming complete ionization of the compounds in solution?

Variation of solubility with temperature \(T\) for a gas in liquid is shown by the following graphs. The correct representation is 

Half-life of a first order reaction is 20 seconds and initial concentration of reactant is 0.2M. The concentration of reactant left after 80 seconds is
Which of the following statements is/are true about equilibrium?
According to Le Chatelier's principle, in the reaction \( \text{CO}(g) + 3\text{H}_2(g) \rightleftharpoons \text{CH}_4(g) + \text{H}_2\text{O}(g) \), the formation of methane is favoured by
The equilibrium constant at 298 K for the reaction \( A + B \rightleftharpoons C + D \) is 100. If the initial concentrations of all the four species were 1 M each, then equilibrium concentration of D (in mol/L) will be
Catalysts are used to increase the rate of a chemical reaction. Because it
Match the following and select the correct option for the quantity of electricity, in Cmol\(^{-1}\), required to deposit various metals at the cathode.
Phenol can be distinguished from propanol by using the reagent
The number of orbitals associated with 'N' shell of an atom is
For a given half cell, \( \text{Al}^{3+} + 3e^- \rightarrow \text{Al} \) on increasing the concentration of aluminium ion, the electrode potential will
Which of the following statements are true about \( [NiCl_4]^{2-} \)?
(a) The complex has tetrahedral geometry.
(b) Co-ordination number of Ni is 2 and oxidation state is +4.
(c) The complex is sp\(^3\) hybridised.
(d) It is a high spin complex.
(e) The complex is paramagnetic.
The group reagent NH\(_4\)Cl (s) and aqueous NH\(_3\), will precipitate which of the following ion
A member of the Lanthanoid series which is well known to exhibit +4 oxidation state is

The major product formed when 1 - Bromo-3-Chlorocyclobutane reacts with metallic sodium in dry ether is 

The electronic conductance depends on:
Which of the following has the most acidic Hydrogen?
The sodium fusion extract is boiled with concentrated nitric acid while testing for halogens. By doing so, it
The correct statement/s about Galvanic cell is/are:
(a) Current flows from cathode to anode
(b) Anode is positive terminal
(c) If \(E_{\text{cell}} < 0\), then it is spontaneous reaction
(d) Cathode is positive terminal
The compound(s) showing optical activity is/are

Which of the following statement(s) is/are correct about the given compound?

X is an extensive property and x is an intensive property of a thermodynamic system. Which of the following statement(s) is (are) correct?

Identify 'P' and 'Q' in the following reaction

Which pair of ions among the following can be separated by precipitation method?

The major product 'P' and 'Q' in the above reactions are