Chemistry questions
29404 published questions with worked solutions.
- The quantity of silver deposited when one coulomb charge is passed through AgNO_3 solution:
- Given below are two statements: Statement I: The metallic radius of Na is 1.86 Å and the ionic radius of Na^+ is lesser than 1.86...
- CH_3CH_2–OH → (i) Jone's Reagent → P (ii) KMnO_4 (iii) NaOH, CaO. Consider the above reaction sequence and identify the major...
- For the electro chemical cell M|M^ 2+ ||X|X^ 2- . If E^o_ (M^ 2+ /M) = 0.46 V and E^o_ (X/X^ 2- ) = 0.34 V. Which of the...
- The number of moles of methane required to produce 11g CO_2(g) after complete combustion is: (Given molar mass of methane in g...
- The number of complexes from the following with no electrons in the t_2 orbital is _______. TiCl_4, [MnO_4]^-, [FeO_4]^ 2- ,...
- The number of ions from the following that have the ability to liberate hydrogen from a dilute acid is _______. Ti^ 2+ , Cr^ 2+...
- The correct statements from the following are: (A) The decreasing order of atomic radii of group 13 elements is Tl > In > Ga > Al...
- Combustion of 1 mole of benzene is expressed as C_6H_6(l) + 15 2 O_2(g) → 6CO_2(g) + 3H_2O(l). The standard enthalpy of...
- The fusion of chromite ore with sodium carbonate in the presence of air leads to the formation of products A and B along with the...
- X g of ethanamine was subjected to reaction with NaNO_2/HCl followed by hydrolysis to liberate N_2 and HCl. The HCl generated was...
- In an atom, total number of electrons having quantum numbers n = 4, |m_l| = 1 and m_s = - 12 is
- In the Claisen-Schmidt reaction to prepare 351 g of dibenzalacetone using 87 g of acetone, the amount of benzaldehyde required is...
- Consider the following single step reaction in gas phase at constant temperature. 2A(g) + B(g) → C(g). The initial rate of the...
- Number of compounds from the following with zero dipole moment is ___________. HF, H_2, H_2S, CO_2, NH_3, BF_3, CH_4, CHCl_3,...
- Given below are two statements: Statement I: Picric acid is 2, 4, 6-trinitrotoluene. Statement II: Phenol-2, 4-disulphuric acid...
- Match List-I with List-II: List-I (Hybridization): A. sp³ B. dsp² C. sp³d D. sp³d² List-II (Orientation in Space): I. Trigonal...
- Which of the following statements are correct? A. Glycerol is purified by vacuum distillation because it decomposes at its normal...
- Match List-I with List-II: List-I (Compound/Species): A. SF₄ B. BrF₃ C. BrO₃⁻ D. NH₄⁺ List-II (Shape/Geometry): I. Tetrahedral...
- Consider the following complexes: (A) [CoCl(NH₃)₅]²⁺, (B) [Co(CN)₆]³⁻, (C) [Co(NH₃)₅(H₂O)]³⁺, (D) [Cu(H₂O)₄]²⁺. The correct order...