Chemistry questions
29404 published questions with worked solutions.
- The primary pollutant that leads to photochemical smog is:Not in JEE Main or NEET syllabus
- Thermal decomposition of a Mn compound (X) at 513 K results in compound Y, MnO_2 and a gaseous product. MnO_2 reacts with NaCl...
- The pair that has similar atomic radii is:
- Which of the given statements is INCORRECT about glycogen?
- NO_2 required for a reaction is produced by the decomposition of N_2O_5 in CCl_4 as per the equation, 2N_2O_5(g) → 4NO_2(g) +...
- A solution is prepared by dissolving 0.6 g of urea (molar mass = 60 g mol^ -1 ) and 1.8 g of glucose (molar mass = 180 g mol^ -1...
- In comparison to boron, beryllium has:
- The molar solubility of Cd(OH)_2 is 1.84 10^ -5 M in water. The expected solubility of Cd(OH)_2 in a buffer solution of pH = 12...
- In which one of the following equilibria, K_p K_c?
- Which one of the following is likely to give a precipitate with AgNO_3 solution?
- Among the statements(a)-(d), the incorrect ones are : (a) Octahedral Co(III) complexes with strong field ligands have very high...
- Two open beakers one containing a solvent and the other containing a mixture of that solvent with a non volatile solute are...
- A chromatography column, packed with silica gel as stationary phase, was used to separate a mixture of compounds consisting of...
- In the following reactions, products (A) and (B), respectively, are : NaOH + Cl_2 (A) + side products (hot and conc.) Ca(OH)_2 +...
- The ammonia ( NH_3 ) released on quantitative reaction of 0.6 g urea ( NH_2CONH_2 ) with sodium hydroxide (NaOH) can be...
- For the following reactions CH_3CH_2CH_2Br + Z^ k_s ( substitution ) CH_3CH_2CH_2Z + Br^ CH_3CH_2CH_2Br + Z^ k_e ( elimination )...
- The redox reaction among the following is :
- The bond order and the magnetic characteristics of CN^- are :
- Within each pair of element F & Cl, S & Se, and Li & Na, respectively, the elements that release more energy upon and electron...
- The refining method used when the metal and the impurities have low and high melting temperatures, respectively, is :Not in JEE Main or NEET syllabus