Chemistry questions
29404 published questions with worked solutions.
- Consider the complex ions, trans-[ Co(en)_2Cl_2 ]^+ (A) and cis-[ Co(en)_2Cl_2 ]^+ (B). The correct statement regarding them is :
- The number of chiral carbons present in sucrose is _________ .
- For a dimerization reaction, 2A(g) → A_2(g) at 298 K, U = – 20kJ mol ^ -1 , S = – 30J K ^ -1 mol ^ -1 , then the G will be...
- For a reaction; X + Y 2Z, 1.0 mol of X, 1.5 mol of Y and 0.5 mol of Z were taken in a 1 L vessel and allowed to react. At...
- The volume, in mL, of 0.02 M K_2Cr_2O_7 solution required to react with 0.288 g of ferrous oxalate in acidic medium is_______....
- Considering that _0>P, the magnetic moment (in BM) of [ Ru(H_2O)_6 ]^ 2+ would be________ .
- Consider the Assertion and Reason given below. Assertion (A) : Ethane polymerized in the presence of Ziegler Natta catalyst at...Not in JEE Main or NEET syllabus
- Arrange the following solution in the decreasing order pf pOH : (A) 0.01 M HCl (B) 0.01 M NaOH (C) 0.01 M CH_3COONa (D) 0.01 M...
- The correct statement with respect to dinitrogen is -
- A solution of two components containing n_1 moles of the 1st component n_2 moles of the 2nd component is prepared. M_1 and M_2...
- For the reaction – Fe_2N(s)+ 3 2 H_2(g) 2Fe(s)+NH_3(g)
- Among the sulphates of alkaline earth metals, the solubilities of BeSO_4 and MgSO_4 in water, respectively, are -Not in JEE Main or NEET syllabus
- The set that contains atomic numbers of only transition elements is :
- The lanthanoid that does NOT show +4 oxidation state is
- The variation of equilibrium constant with temperature is given below : Temperature T_1 = 25ºC, Equilibrium Constant K_1 = 100...
- Which of the following compounds shows geometrical isomerism :
- Potassium chlorate is prepared by the electrolysis of KCl in basic solution 6OH^-+Cl^- ClO_3^-+3H_2O+6e^- . If only 60% of the...
- The elevation of boiling point of 0.10 m aqueous CrCl_3.xNH_3 solution is two times that of 0.05 m aqueous CaCl_2 solution. The...
- The number of Cl=O bonds in perchloric acid is, "_________"
- The value of K_C is 64 at 800 K for the reaction N_2(g)+3H_2(g) 2NH_3(g) . The value of K_C for the following reaction is :...