Chemistry questions
29404 published questions with worked solutions.
- Among the following complexes, the total number of diamagnetic species is _____. [ Mn(NH _3)_6]^ 3+ , [ MnCl _6]^ 3- , [ FeF _6]^...
- Based on **VSEPR** model, match the xenon compounds given in **List-I** with the corresponding geometries and the number of lone...
- According to Bohr's model, the highest kinetic energy is associated with the electron in the
- In a metal deficient oxide sample, M _ X Y _2 O _4 (**M** and **Y** are metals), **M** is present in both +2 and +3 oxidation...
- The species formed on fluorination of phosphorus pentachloride in a polar organic solvent are
- An aqueous solution of hydrazine ( N _2 H _4) is electrochemically oxidized by O _2, thereby releasing chemical energy in the...
- To form a complete monolayer of acetic acid on 1g of charcoal, 100 mL of 0.5 M acetic acid was used. Some of the acetic acid...Not in JEE Main or NEET syllabus
- Vessel-1 contains w _2 g of a non-volatile solute **X** dissolved in w _1 g of water. Vessel-2 contains w _2 g of another...
- Among [ Co(CN) _4]^ 4- , [ Co(CO) _3( NO )], XeF _4, [ PCl _4]^+, [ PdCl _4]^ 2- , [ ICl _4]^-, [ Cu(CN) _4]^ 3- and P _4 the...
- An organic compound P having molecular formula C _6 H _6 O _3 gives ferric chloride test and does not have intramolecular...
- The correct decreasing order of energy for the orbitals having, following set of quantum numbers: (A) n = 3, = 0, m = 0 (B) n =...
- Match List-I with List-II List-I: (A) _ MO = _ A - _ B (B) = Q r (C) (N_b − N_a)/2 (D) _ MO = _ A + _ B List-II: (I) Dipole...
- Given below are two statements : Statement-I : For KI, molar conductivity increases steeply with dilution. Statement-II : For...
- Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R) : Assertion (A) :...Not in JEE Main or NEET syllabus
- Outermost electronic configurations of four elements A, B, C, D are given below : (A) 3s^ 2 (B) 3s^ 2 3p^ 1 (C) 3s^ 2 3p^ 3 (D)...
- An element A of group 1 shows similarity to an element B belonging to group 2. If A has maximum hydration enthalpy in group 1...Not in JEE Main or NEET syllabus
- Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Boron...
- In neutral or alkaline solution, MnO_ 4 ^ - oxidises thiosulphate to :
- Low oxidation state of metals in their complexes are common when ligands :
- Match List-I with List-II List-I (Polymer): (A) Neoprene (B) Teflon (C) Acrilan (D) Natural rubber List-II (Monomer): (I)...Not in JEE Main or NEET syllabus