Chemistry questions
29404 published questions with worked solutions.
- The denticity of the ligand present in the Fehling's reagent is _________.
- The equilibrium constant for the reaction Zn(s) + Sn^ 2+ (aq) Zn^ 2+ (aq) + Sn(s) is 1 10^ 20 at 298 K. The magnitude of standard...
- When 0.01 mol of an organic compound containing 60% carbon was burnt completely, 4.4 g of CO_2 was produced. The molar mass of...
- Total number of acidic oxides among N_2O_3, NO_2, N_2O, Cl_2O_7, SO_2, CO, CaO, N_2O and NO is ____________.
- For conversion of compounds A B, the rate constant of the reaction was found to be 4.6 10^ -5 L mol^ -1 s^ -1 . The order of the...
- Assume that the radius of the first Bohr orbit of hydrogen atom is 0.6 Å. The radius of the third Bohr orbit of He^+ is...
- At 298 K N_2(g)+3H_2(g) 2NH_3(g), K_1=4 10^5 N_2(g)+O_2(g) 2NO(g), K_2=1.6 10^ 12 H_2(g)+ 1 2 O_2(g) H_2O(g), K_3=1.0 10^ -13...
- The volume of HCl, containing 73 g L^ -1 , required to completely neutralise NaOH obtained by reacting 0.69 g of metallic sodium...
- The correct order of hydration enthalpies is (A) K^+ (B) Rb^+ (C) Mg^ 2+ (D) Cs^+ (E) Ca^ 2+ Choose the correct answer from the...
- Number of cyclic tripeptides formed with 2 amino acids A and B is :
- Which of the given compounds can enhance the efficiency of hydrogen storage tank ?Not in JEE Main or NEET syllabus
- Match List-I with List-II. List-I (Antimicrobials): A. Narrow spectrum antibiotic B. Antiseptic C. Disinfectants D. Broad...Not in JEE Main or NEET syllabus
- Identify the correct order for the given property for following compounds. (A) Boiling Point: n-propylCl < isopropylCl < allylCl...
- "A" obtained by Oswald's method involving air oxidation of NH_3, upon further air oxidation produces "B". "B" on hydration forms...
- The standard electrode potential (M^ 3+ /M^ 2+ ) for V, Cr, Mn & Co are –0.26 V, –0.41 V, +1.57 V and +1.97 V, respectively. The...
- Match List-I with List-II. List-I (Reaction): A. Hoffmann Degradation B. Clemenson reduction C. Cannizaro reaction D....
- The bond dissociation energy is highest for
- Chiral complex from the following is Here en = ethylene diamine
- Which of the following salt solutions would coagulate the colloid solution formed when FeCl_3 is added to NaOH solution, at the...Not in JEE Main or NEET syllabus
- The increasing order of pK_a for the following phenols is (A) 2,4-Dinitrophenol (B) 4-Nitrophenol (C) 2,4,5-Trimethylphenol (D)...