Chemistry questions
29404 published questions with worked solutions.
- The decreasing order of hydride affinity for following carbocations is : (A) CH_2=CH- + C (CH_3) (B) C_6H_5- + C (C_6H_5)-CH_3...
- The correct order of the number of unpaired electrons in the given complexes is : (A) [Fe(CN)_6]^ 3- (B) [FeF_6]^ 3- (C) [CoF_6]^...
- The reaction used for preparation of soap from fat is -
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : The energy...
- Incorrect method of preparation for alcohols from the following is -
- The correct order for acidity of the following hydroxyl compound is : (A) CH_3OH (B) (CH_3)_3COH (C) phenol (D) p-methoxyphenol...
- Match List-I with List-II. List-I: A. 16 g of CH_4(g) B. 1 g of H_2(g) C. 1 mole of N_2(g) D. 0.5 mol of SO_2(g) List-II: I....
- The correct relationships between unit cell edge length 'a' and radius of sphere 'r' for face-centred and body-centred cubic...Not in JEE Main or NEET syllabus
- The correct order of metallic character is
- In Carius tube, an organic compound 'X' is treated with sodium peroxide to form a mineral acid 'Y'. The solution of BaCl_2 is...
- The difference in the oxidation state of Xe between the oxidised product of Xe formed on complete hydrolysis of XeF_4 and XeF_4...
- For a metal ion, the calculated magnetic moment is 4.90 BM. This metal ion has _______ number of unpaired electrons.
- In alkaline medium, the reduction of permanganate anion involves a gain of _______ electrons.
- A(g) 2B(g) + C(g) For the given reaction, if the initial pressure is 450 mm Hg and the pressure at time t is 720 mm Hg at a...
- The number of endothermic process/es from the following is _______. A. I_2(g) 2I(g) B. HCl(g) H(g) + Cl(g) C. H_2O(l) H_2O(g) D....
- The specific conductance of 0.0025 M acetic acid is 5 10^ -5 S cm^ -1 at a certain temperature. The dissociation constant of...
- The number of incorrect statement/s from the following is _________. A. The successive half lives of zero order reactions...
- The number of molecules from the following which contain only two lone pair of electrons is ____________ H_2O, N_2, CO, XeF_4,...
- An aqueous solution of volume 300 cm^3 contains 0.63 g of protein. The osmotic pressure of the solution at 300 K is 1.29 mbar....
- Given below are two statements: Statement I : Aqueous solution of K_2Cr_2O_7 is preferred as a primary standard in volumetric...