Chemistry questions
29404 published questions with worked solutions.
- The reagents with which glucose does **not** react to give the corresponding tests/products are A. Tollen's reagent B. Schiff's...
- Match List I with List II. List-I: Quantum Number (A) m_l (B) m_s (C) l (D) n List-II: Information provided (I) shape of orbital...
- Which reaction is **NOT** a redox reaction?
- Given below are two statements: Statement I : The boiling point of hydrides of Group 16 elements follow the order...
- Arrange the following elements in increasing order of electronegativity: N, O, F, C, Si Choose the correct answer from the...
- The energy of an electron in the ground state (n = 1) for He^ + ion is -x J, then that for an electron in n = 2 state for Be^ 3+...
- Match List I with List II. List-I: (Conversion) (A) 1 mol of H_2O to O_2 (B) 1 mol of MnO_4^- to Mn^ 2+ (C) 1.5 mol of Ca from...
- 1 gram of sodium hydroxide was treated with 25 mL of 0.75 M HCl solution, the mass of sodium hydroxide left unreacted is equal to
- In which of the following equilibria, K_p and K_c are **NOT** equal?
- The E^ value for the Mn^ 3+ /Mn^ 2+ couple is more positive than that of Cr^ 3+ /Cr^ 2+ or Fe^ 3+ /Fe^ 2+ due to change of
- In which of the following processes entropy increases? A. A liquid evaporates to vapour. B. Temperature of a crystalline solid...
- A compound with a molecular formula of C_6H_ 14 has two tertiary carbons. Its IUPAC name is:
- For the reaction 2A B+C, K_c=4 10^ -3 . At a given time, the composition of reaction mixture is : [A]=[B]=[C]=2 10^ -3 M. Then,...
- Given below are two statements: Statement I : The boiling point of three isomeric pentanes follows the order n-pentane >...
- Which one of the following alcohols reacts instantaneously with Lucas reagent?
- The Henry's law constant (K_H) values of three gases (A, B, C) in water are 145, 2 10^ -5 and 35 kbar, respectively. The...
- On heating, some solid substances change from solid to vapour state without passing through liquid state. The technique used for...
- Match List I with List II. List-I: (Complex) (A) [Co(NH_3)_5(NO_2)]Cl_2 (B) [Co(NH_3)_5(SO_4)]Br (C) [Co(NH_3)_6][Cr(CN)_6] (D)...
- Given below are two statements: Statement I : Aniline does not undergo Friedel-Crafts alkylation reaction. Statement II : Aniline...
- Among Group 16 elements, which one does **NOT** show -2 oxidation state?