List of top Chemistry Questions

Which of the following is the correct structure of L-Glucose ?
The number of correct reaction(s) among the following is ________.
The correct sequence of ligands in the order of decreasing field strength is :
Identify the correct set of reagents or reaction conditions ‘X’ and ‘Y’ in the following set of transformation.
Which of the following nitrogen containing compound does not give Lassaigne’s test ?
The Molarity (M) of an aqueous solution containing \( 5.85 \, \text{g} \) of \( \text{NaCl} \) in \( 500 \, \text{mL} \) water is:
(Given: Molar Mass \( \text{Na} = 23 \) and \( \text{Cl} = 35.5 \, \text{g mol}^{-1} \))
The element which shows only one oxidation state other than its elemental form is :
Consider the following reaction: \( \text{MnO}_2 + \text{KOH} + \text{O}_2 \rightarrow \text{A} + \text{H}_2\text{O} \). Product ‘A’ in neutral or acidic medium disproportionates to give products ‘B’ and ‘C’ along with water. The sum of spin-only magnetic moment values of B and C is _________ BM (nearest integer).
(Given atomic number of Mn is 25)
Problem Fig
An ideal gas undergoes a cyclic transformation starting from the point \( A \) and coming back to the same point by tracing the path \( A \to B \to C \to A \) as shown in the diagram. The total work done in the process is \( \_\_\_\_ \) J.
Number of radial nodes present in 3p are
Which of the following compounds has intramolecular hydrogen bonding in it?
The ratio of magnitude of potential energy and kinetic energy for \(5^{th}\) excited state of hydrogen atom is
Consider the following two statements Statement I: \(π\) \(2p\) bonding molecular orbital has low electron density above & below internuclear axis Statement II: \(π\times2p\) antibonding molecular orbital has only one nodal plane
Consider the following two statements Statement I: \(SiO_2\) and GeO₂\(GeO_2\) are acidic, \(SnO\) and \(PbO\) are amphoteric Statement II: Allotropes of carbon are formed due to catenation and \(dπ - ρπ\) bond
Number of compounds with one lone pair of electrons on central atom amongst following is
\(CIF_3, XeO_3, BrF_5, XeF_4, O_3, NH_3\),\( H_2O\)
Which of the following has the highest 3rd ionization energy?
Which of the following elements has the highest 1st ionization energy ?
Which of the following is correct for adiabatic free expansion against vacuum?
Consider the following two statements 
Statement I: In \(p\) and \(d\) block both metals and non - metals are present 
Statement II: Electronegativity and ionisation enthalpy of metals is greater than non - metals
Complementary stand of DNA ATGCTTCA is:
What is the order of reducing character for \(AsH_3, NH_3, PH_3\) (group \(15\) hydrides)?
Why does oxygen show anomalous behavior ?
Which of the following sets of elements can be detected by Lassaigne's Test ?
In Kjeldahl's method for estimation of nitrogen, \(CuSO_4\) acts as