List of top Chemistry Questions asked in JEE Main

Arrange the following compounds in increasing order of their dipole moment:
HBr, H\(_2\)S, NF\(_3\), and CCl\(_3\)

Consider the given figure and choose the correct option: \includegraphics[width=1\linewidth]{322.png}

Consider the following cases of standard enthalpy of reaction (\( \Delta H_f^\circ \) in kJ mol\(^{-1}\)): \[ \text{C}_2\text{H}_6(g) + 7 \text{O}_2(g) \rightarrow 2 \text{CO}_2(g) + 3 \text{H}_2\text{O}(l) \quad \Delta H_1^\circ = -1550 \] \[ \text{C(graphite)} + \text{O}_2(g) \rightarrow \text{CO}_2(g) \quad \Delta H_2^\circ = -393.5 \] \[ \text{H}_2(g) + \frac{1}{2} \text{O}_2(g) \rightarrow \text{H}_2\text{O}(g) \quad \Delta H_3^\circ = -286 \] The magnitude of \( \Delta H_f^\circ \) of \( \text{C}_2\text{H}_6(g) \) is ____ kJ mol\(^{-1}\) (Nearest integer).

Given below are two statements: Statement (I): \textit{A spectral line will be observed for a 2p\(_x\) \(\rightarrow\) 2p\(_y\) transition.}
Statement (II): \textit{2p\(_x\) and 2p\(_y\) are degenerate orbitals.} In the light of the above statements, choose the correct answer from the options given below:

The most stable carbocation from the following is: \includegraphics[width=1\linewidth]{3333.png}

The molar solubility(s) of zirconium phosphate with molecular formula \( \text{Zr}^{4+} \text{PO}_4^{3-} \) is given by relation: \includegraphics[width=1\linewidth]{333.png}

Given below are two statements: Statement (I): \textit{An element in the extreme left of the periodic table forms acidic oxides.}
Statement (II): \textit{Acid is formed during the reaction between water and oxide of a reactive element present in the extreme right of the periodic table.} In the light of the above statements, choose the correct answer from the options given below:

Given below are two statements: Statement (I): \textit{Corrosion is an electrochemical phenomenon in which pure metal acts as an anode and impure metal as a cathode.}
Statement (II): \textit{The rate of corrosion is more in alkaline medium than in acidic medium.} In the light of the above statements, choose the correct answer from the options given below:

Given below are two statements: Statement (I): \textit{Nitrogen, sulphur, halogen, and phosphorus present in an organic compound are detected by Lassaigne's Test.}
Statement (II): \textit{The elements present in the compound are converted from covalent form into ionic form by fusing the compound with Magnesium in Lassaigne's test.} In the light of the above statements, choose the correct answer from the options given below:

Match List - I with List - II. List - I (Partial Derivatives) \quad List - II (Thermodynamic Quantity)

\includegraphics[width=1\linewidth]{brc.png}

Match the Compounds (List - I) with the appropriate Catalyst/Reagents (List - II) for their reduction into corresponding amines. \includegraphics[width=1\linewidth]{b.png}