Chemistry questions
29404 published questions with worked solutions.
- Assertion (A) : A simple distillation can be used to separate a mixture of propanol and propanone. Reason (R) : Two liquids with...
- Which one of the following 0.10 M aqueous solutions will exhibit the largest freezing point depression ?
- Consider the following cell reaction Cd_ (s) +Hg_2SO_ 4(s) + 9 5 H_2O_ (l) CdSO_4. 9 5 H_2O_ (s) +2Hg_ (l) The value of E^0_ cell...
- The molarity of the solution prepared by dissolving 6.3 g of oxalic acid (H_2C_2O_4.2H_2O) in 250 mL of water in mol L^ -1 is x...
- The total number of reagents from those given below that can convert nitrobenzene into aniline is______. (Integer answer) I. Sn –...
- The number of halogen(/s) forming halic (V) acid is___________.
- For a first order reaction, the ratio of the time for 75% completion of a reaction to the time for 50% completion is_______....
- The number of hydrogen bonded water molecule(s) associated with stoichiometry CuSO_4.5H_2O is_______.
- Ge(Z = 32) in its ground state electronic configuration has x completely filled orbitals with m_l = 0. The value of x is_______.
- A_3B_2 is a sparingly soluble salt of molar mass M (g mol^ -1 ) and solubility x g L^ -1 . The solubility product satisfies K_ sp...
- Which among the following species has unequal bond lengths ?
- The correct order of acid character of the following compounds is : OH-benzoic acid (I), nitro-benzoic acid (II), COOH-benzoic...
- The correct order of bond dissociation enthalpy of halogens is :
- In which of the following order the given complex ions are arranged correctly with respect to their decreasing spin only magnetic...
- Which of the following compound is added to the sodium extract before addition of silver nitrate for testing of halogens?
- Which one of the following statements is FALSE for hydrophilic sols ?Not in JEE Main or NEET syllabus
- The solubility of Ca(OH)_2 in water is : [Given : The solubility product of Ca(OH)_2 in water = 5.5 10^ -6 ]
- The method used for the purification of Indium is:Not in JEE Main or NEET syllabus
- Given below are two statements: Statement I : and forms of sulphur can change reversibly between themselves with slow heating or...
- If a compound AB dissociates to the extent of 75% in an aqueous solution, the molality of the solution which shows a 2.5 K rise...