Chemistry questions
29404 published questions with worked solutions.
- Match List-I with List-II List-I: A. α-Glucose and α-Galactose B. α-Glucose and β-Glucose C. α-Glucose and α-Fructose D....
- Given below are two statements: Statement I: The correct order of first ionization enthalpy values of Li, Na, F and Cl is Na < Li...
- For a strong electrolyte, a plot of molar conductivity against (concentration)^ 1/2 is a straight line, with a negative slope,...
- A first row transition metal in its +2 oxidation state has a spin-only magnetic moment value of 3.86 BM. The atomic number of the...
- The number of unpaired d-electrons in [Co(H_2O)_6]^ 3+ is______
- The number of species from the following that have pyramidal geometry around the central atom is________ S_2O_3^ 2- , SO_4^ 2- ,...
- The maximum number of orbitals which can be identified with n = 4 and m = 0 is_____
- Number of compounds/species from the following with non-zero dipole moment is_____ BeCl_2, BCl_3, NF_3, XeF_4, CCl_4, H_2O, H_2S,...
- From 6.55 g of aniline, the maximum amount of acetanilide that can be prepared will be___× 10^ -1 g.
- Consider the following reaction, the rate expression of which is given below A + B → C, rate = k [A]^ 1/2 [B]^ 1/2 . The reaction...
- The total number of 'sigma' and 'Pi' bonds in 2-oxohex-4-ynoic acid is____.
- A first row transition metal with highest enthalpy of atomisation, upon reaction with oxygen at high temperature forms oxides of...
- What pressure (bar) of H_2 would be required to make emf of hydrogen electrode zero in pure water at 25ºC?
- The correct sequence of ligands in the order of decreasing field strength is:
- Match List-I with List-II: List-I (Mechanism steps): (A) Aniline: the lone pair on –NH_2 delocalises into the benzene ring, shown...
- What will be the decreasing order of basic strength of the following conjugate bases? ^-OH, R O, CH_3CO O, Cl
- In the precipitation of the iron group (III) in qualitative analysis, ammonium chloride is added before adding ammonium hydroxide...
- One of the commonly used electrode is calomel electrode. Under which of the following categories calomel electrode comes?
- Number of complexes from the following with even number of unpaired "d" electrons is ____. [V(H_2O)_6]^ 3+ , [Cr(H_2O)_6]^ 2+ ,...
- Which one of the following molecules has maximum dipole moment?