Chemistry questions
29404 published questions with worked solutions.
- The potassium ferrocyanide solution gives a Prussian blue colour, when added to :
- Identify the element for which electronic configuration in +3 oxidation state is [Ar]3d^5:
- The molar solubility of Zn(OH)_2 in 0.1 M NaOH is x 10^ -18 M. The value of x is _____(Nearest integer) (Given : The solubility...
- For the reaction 2NO_2(g) N_2O_4(g), when S = –176.0 JK^ -1 and H = –57.8 kJ mol^ -1 , the magnitude of G at 298 K for the...
- The sum of oxidation states of two silver ions in [Ag(NH_3)_2] [Ag(CN)_2] complex is _______.
- The number of atoms in 8 g of sodium is x 10^ 23 . The value of x is________. (Nearest integer) [Given : N_A=6.02 10^ 23 mol^ -1...
- If 80 g of copper sulphate CuSO_4.5H_2O is dissolved in deionised water to make 5 L of solution. The concentration of the copper...
- The spin-only magnetic moment value of B_2^+ species is _________ 10^ -2 BM. (Nearest integer) [Given 3 = 1.73]
- If the conductivity of mercury at 0°C is 1.07 10^6 S m^ -1 and the resistance of a cell containing mercury is 0.243 , then the...
- A peptide synthesized by the reactions of one molecule each of Glycine, Leucine, Aspartic acid and Histidine will...
- (continuation) Total peptide linkage count from Q59 reaction scheme confirmed as 3.
- Which of the following reduction reaction CANNOT be carried out with coke ?Not in JEE Main or NEET syllabus
- Identify the elements X and Y using the ionisation energy values given below : Ionization energy (kJ/mol): 1st, 2nd X: 495, 4563...
- The secondary structure of protein is stabilised by:
- Which of the following polymer is used in the manufacture of wood laminates ?Not in JEE Main or NEET syllabus
- Statement I : Sodium hydride can be used as an oxidising agent. Statement II : The lone pair of electrons on nitrogen in pyridine...
- The INCORRECT statement regarding the structure of C_ 60 is :
- The correct statements about H_2O_2 are : (A) used in the treatment of effluents. (B) used as both oxidising and reducing agents....
- Ammonolysis of Alkyl halides followed by the treatment with NaOH solution can be used to prepare primary, secondary and tertiary...
- Which of the following is least basic ?