Chemistry questions
29404 published questions with worked solutions.
- A species having carbon with sextet of electrons and can act as electrophile is called
- Given below are two statements: Statement I: IUPAC name of HO–CH₂–(CH₂)₃–CH₂–COCH₃ is 7-hydroxyheptan-2-one. Statement II:...
- Given below are two statements: Statement I: Noble gases have very high boiling points. Statement II: Noble gases are monoatomic...
- Identify the factor from the following that does not affect electrolytic conductance of a solution.
- The 'spin only' magnetic moment for [Ni(NH₃)₆]²⁺ is ________ × 10⁻¹ BM. (given = atomic number of Ni : 28)
- Number of moles of methane required to produce 22 g CO₂(g) after combustion is x × 10⁻² moles. The value of x is ________.
- Number of alkanes obtained on electrolysis of a mixture of CH₃COONa and C₂H₅COONa is ________.
- The ionization energy of sodium in kJ mol⁻¹, if electromagnetic radiation of wavelength 242 nm is just sufficient to ionize...
- The number of species from the following in which the central atom uses sp³ hybrid orbitals in its bonding is ________. NH₃, SO₂,...
- One Faraday of electricity liberates x × 10⁻¹ gram atom of copper from copper sulphate. x is ________.
- Consider the following reaction at 298 K. (3/2)O₂(g) ⇌ O₃(g), K_p = 2.47 × 10⁻²⁹. Δ_rG° for the reaction is ________ kJ. (Given R...
- CH₃CH₂Br + NaOH → (C₂H₅OH) → Product A; → (H₂O) → Product B. The total number of hydrogen atoms in product A and product B is...
- Calamine and Malachite, respectively, are the ores of :Not in JEE Main or NEET syllabus
- In the following sequence of reactions a compound A, (molecular formula C_6H_ 12 O_2) with a straight chain structure gives a C_4...
- Match List – I with List II. List-I (Colloid Preparation Method): (a) Hydrolysis (b) Reduction (c) Oxidation (d) Double...Not in JEE Main or NEET syllabus
- The Crystal Field Stabilization Energy (CFSE) and magnetic moment (spin-only) of an octahedral aqua complex of a metal ion (M^ 2+...
- Monomer units of Dacron polymer are :Not in JEE Main or NEET syllabus
- In the given chemical reaction, colors of the Fe^ 2+ and Fe^ 3+ ions, are respectively : 5Fe^ 2+ +MnO^ 4- +8H^+ Mn^ 2+...
- The stereoisomers that are formed by electrophilic addition of bromine to trans-but-2-ene is/are
- Given below are two statements : Statement I : The nucleophilic addition of sodium hydrogen sulphite to an aldehyde or a ketone...