Chemistry questions
29404 published questions with worked solutions.
- 83 g of ethylene glycol dissolved in 625 g of water. The freezing point of the solution is ________K. (Nearest integer) [Use :...
- The reaction rate for the reaction [PtCl_4]^ 2- +H_2O [Pt(H_2O)Cl_3]^-+Cl^- was measured as a function of concentrations of...
- A chloro compound "A". (i) forms aldehydes on ozonolysis followed by the hydrolysis. (ii) when vaporized completely 1.53 g of A,...
- Which one of the following is correct for the adsorption of a gas at a given temperature on a solid surface?Not in JEE Main or NEET syllabus
- The major product formed in the following reaction is : indole-2-yl-acetic acid [CH_3OH] SOCl_2 Major product
- The polymer formed on heating Novolac with formaldehyde is :Not in JEE Main or NEET syllabus
- Statement I : The limiting molar conductivity of KCl (strong electrolyte) is higher compared to that of CH_3COOH (weak...
- Statement I: In the titration between strong acid and weak base methyl orange is suitable as an indicator. Statement II: For...
- Statement I: According to Bohr's model of an atom, qualitatively the magnitude of velocity of electron increases with decrease in...
- The correct sequential addition of reagents in the preparation of 3-nitrobenzoic acid from benzene is :
- Statement I: Frenkel defects are vacancy as well as interstitial defects. Statement II: Frenkel defect leads to colour in ionic...Not in JEE Main or NEET syllabus
- AB_3 is an interhalogen T-shaped molecule. The number of lone pairs of electrons on A is _______. (Integer answer)
- Of the following four aqueous solutions, total number of those solutions whose freezing point is lower than that of 0.10 M...
- The OH– concentration in a mixture of 5.0 mL of 0.0504 M NH_4Cl and 2 mL of 0.0210 M NH_3 solution is x 10^ -6 M. The value of x...
- The number of 4f electrons in the ground state electronic configuration of Gd^ 2+ is_________.
- The following data was obtained for chemical reaction given below at 975 K. 2NO(g)+H_2(g) N_2(g)+2H_2O(g) [NO] [H2] Rate: (A) 8...
- The Born-Haber cycle for KCl is evaluated with the following data: _fH^- for KCl = –436.7 kJ mol^ -1 , _ sub H^- for K = 89.2 kJ...
- The total number of negative charge in the tetrapeptide, Gly-Glu-Asp-Tyr, at pH 12.5 will be _________. (Integer answer)
- An aqueous KCl solution of density 1.20 g mL^ -1 has a molality of 3.30 mol kg^ -1 . The molarity of the solution in mol L^ -1 is...
- Which of the following forms of hydrogen emits low energy ^- particles?Not in JEE Main or NEET syllabus