Chemistry questions
29404 published questions with worked solutions.
- Among the following, total number of meta directing functional groups is ________. (Integer based) –OCH₃, –NO₂, –CN, –CH₃,...
- The mass of silver (Molar mass of Ag : 108 gmol⁻¹) displaced by a quantity of electricity which displaces 5600 mL of O₂ at S.T.P....
- The element having the highest first ionization enthalpy is
- A reagent which gives brilliant red precipitate with Nickel ions in basic medium is
- The correct IUPAC name of K₂MnO₄ is
- Given below are two statements : Statement I : Fluorine has most negative electron gain enthalpy in its group. Statement II :...
- Alkyl halide is converted into alkyl isocyanide by reaction with
- Chromatographic technique/s based on the principle of differential adsorption is/are A. Column chromatography B. Thin layer...
- The ascending acidity order of the following H atoms (shown circled in the source) is A: HC≡C–Ⓗ B: H₂C=CH–Ⓗ C: (CH₃)₃C–Ⓗ D:...
- Match List-I with List-II. List-I (Bio Polymer): A. Starch, B. Cellulose, C. Nucleic acid, D. Protein List-II (Monomer): I....
- Phenol treated with chloroform in presence of sodium hydroxide, which further hydrolyzed in presence of an acid results
- Anomalous behavior of oxygen is due to its
- Match List-I with List-II. List-I (Compound): A. Ethanol, B. Phenol, C. m-Nitrophenol, D. p-Nitrophenol List-II (pKa value): I....
- Match List I with List II. List I (Spectral Series for Hydrogen): A. Lyman, B. Balmer, C. Paschen, D. Pfund List II (Spectral...
- Which of the following acts as a strong reducing agent ? (Atomic number: Ce = 58, Eu = 63, Gd = 64, Lu = 71)
- Which of the following statement are correct about Zn, Cd and Hg? A. They exhibit high enthalpy of atomization as the d-subshell...
- Standard enthalpy of vapourisation for CCl₄ is 30.5 kJ mol⁻¹. Heat required for vapourisation of 284 g of CCl₄ at constant...
- The oxidation number of iron in the compound formed during brown ring test for NO₃⁻ ion is ________.
- The following concentrations were observed at 500K for the formation of NH₃ from N₂ and H₂. At equilibrium ; [N₂] = 2 × 10⁻² M,...
- A constant current was passed through a solution of AuCl₄⁻ ion between gold electrodes. After a period of 10.0 minutes, the...