Chemistry questions
29404 published questions with worked solutions.
- Consider the three aromatic molecules (P, Q and R) whose structures have been given below: P is N,N-dimethylaniline, Q is...
- Match List-I with List-II. List-I (Vitamin): A. Vitamin B₁ B. Vitamin B₂ C. Vitamin B₆ D. Vitamin C List-II (Name): I. Pyridoxine...
- A salt with few drops of conc. HCl gives apple green colour in flame test. The group precipitate of the salt is dissolved in...
- 5.33 g of CrCl₃·6H₂O, which is a 1 : 3 electrolyte, is dissolved in water and is passed through a cation exchanger. The chloride...
- Consider the isomers of hydrocarbon with molecular formula C₅H₁₀. These isomers do not decolourise KMnO₄ solution. These isomers...
- One mole of an alkane (x) requires 8 mole oxygen for complete combustion. Sum of number of carbon and hydrogen atoms in the...
- For reaction A → P, rate constant k = 1.5 × 10³ s⁻¹ at 27°C. If activation energy for the above reaction is 60 kJ mol⁻¹, then the...
- At the transition temperature T, A ⇌ B and ΔG° = 105 − 35logT where A and B are two states of substance X. The transition...
- Which of the following is correct set of 4 quantum numbers of 19th electron in Chromium (Atomic number = 24) in accordance with...
- At T(K), the equilibrium constant of A₂(g) + B₂(g) ⇌ C(g) is 2.7 × 10⁻⁵. What is the equilibrium constant for 13A₂(g) + 13B₂(g) ⇌...
- In order to oxidise a mixture of 1 mole each of FeC₂O₄, Fe₂(C₂O₄)₃, FeSO₄ and Fe₂(SO₄)₃ in acidic medium, the number of moles of...
- A monoatomic anion (A⁻) has 45 neutrons and 36 electrons. Atomic mass, group in the periodic table and physical state at room...
- Given below are two statements: Statement I: The covalency of oxygen is generally two but it can exceed upto four. The oxidation...
- The correct statements among the following are, A. Mo(VI) and W(VI) are less stable than Cr(VI). B. Ce⁴⁺ and Tb⁴⁺ are oxidant...
- Match the LIST-I with LIST-II List-I (Complex ion): A. [Cr(H₂O)₆]²⁺ B. [Co(H₂O)₆]²⁺ C. [Cu(H₂O)₆]²⁺ D. [Mn(H₂O)₆]²⁺ List-II...
- Increasing order of electron withdrawing power of following functional groups is: a. −CN b. −COOH c. −NO₂ d. −I
- Match the LIST-I with LIST-II List-I (Name of reaction): A. Finkelstein reaction B. Swarts reaction C. Sandmeyer's reaction D....
- Amongst the given nine compounds (benzaldehyde; 1-naphthol; a phenol bearing an N,N-dimethylamino substituent; a para-substituted...
- Product C of the following reaction sequence will be: Aniline Br_2/water A (Major Product) NaNO_2/HCl, 273-278K B (i) ,HBF_4 (ii)...
- Given below are two statements: Statement I: The structure of Maltose is given below (two glucose units linked α-1,4). Maltose is...