List of top Chemistry Questions

Among the following, the molecule in which all atoms obey the octet rule is
What is the correct equation that relates kinetic energy (\(E_{\text{ke}}\)) and pressure (\(P\)) of one mole of an ideal gas? - (V = Volume)

At T(K), the following graph is obtained for an ideal gas.

Which of the following graphs correctly represents the work done on the gas (shaded part)?

Identify the correct statements from the following: I. Conjugate base of chloric acid is \( ClO^- \)
II. \( AlCl_3 \) is a Lewis acid
III. Conjugate base of \( NH_3 \) is \( NH_2^- \)
The anions present in baking soda, caustic soda, and washing soda respectively are
The products formed in the reaction of \( BeCl_2 \) with \( LiAlH_4 \) are
Identify the reaction in which hydrogen gas is not liberated
Assertion (A): Silicones are used in surgical and cosmetic plants Reason (R): Silicones have high thermal stability
The minimum concentration (ppm) of dissolved oxygen in water that is required for the growth of fish is

Observe the following formula 

 The groups/atoms in the plane of the paper are

IUPAC name of neohexyl alcohol is
A crystal is formed by X (cations) and Y (anions). Atoms of Y form ccp and atoms of X occupy half of octahedral voids and half of tetrahedral voids. What is the molecular formula of the crystal?
Identify the correct graph for a first-order reaction (A → P) Given:
- \( x \)-axis = time (\( t \))
- \( a \) = Initial concentration of A
- \( (a-x) \) = Concentration of A at time \( t \)

Match the following: 

Identify the correct statements from the following:
The amino acid obtained from cheese is
An alkene \( X \) (\( C_5H_{10} \)) on reaction with \( HBr \) gave \( Y \) (\( C_5H_{11}Br \)). \( Y \) undergoes hydrolysis via an \( S_N1 \) mechanism. What is \( X \)?

The products of the following reactions \( X \) and \( Y \) respectively are Reaction: 

Which of the following sequence of reagents converts benzoic acid to benzaldehyde?
An organic compound \( C_7H_5N \) on reduction with reagent X gave Y. Reaction of Y with p-toluene sulphonyl chloride gave Z which is insoluble in alkali. X and Y respectively are:
Two statements are given below Statement I: Liquid A and liquid B form a non-ideal solution with positive deviation. \hspace{0.5cm} The interactions between A and B are weaker than A–A and B–B interactions. Statement II: For an ideal solution, \(\Delta_{\text{mix}} H = 2 \text{ kJ mol}^{-1} \); \(\Delta_{\text{mix}} V = 0\).
At 300 K, aqueous KCl and aqueous K$_2$SO$_4$ solutions were electrolyzed separately using Pt electrodes. The gases liberated at cathodes in these two electrolytic processes are respectively:
A hydrocarbon has 85.7\% of carbon by weight. 56 g (2 moles) of hydrocarbon was completely burnt in oxygen and obtained \( CO_2 \) and \( H_2O \). What is the weight (in g) of \( CO_2 \) formed? - (C = 12 u, H = 1 u, O = 16 u)
The electron gain enthalpy (in kJ/mol) of oxygen, sulphur, selenium respectively are
What is the energy (in J) required to transfer the electron from \( n = 1 \) to \( n = 2 \) state in \( \text{Li}^{2+} \)? (K = constant \( 2.18 \times 10^{-18} \) J)