Chemistry questions
29404 published questions with worked solutions.
- The correct sequence of acidic strength of the following aliphatic acids in their decreasing order is: CH₃CH₂COOH, CH₃COOH,...
- Given below are two statements: Statement (I): All the following compounds react with p-toluenesulfonyl chloride. C₆H₅NH₂,...
- The emf of cell Tl|Tl⁺(0.001 M)||Cu²⁺(0.01 M)|Cu is 0.83 V at 298 K. It could be increased by:
- Identify the correct statements about p-block elements and their compounds. (A) Non metals have higher electronegativity than...
- Given below are two statements: Statement (I): Kjeldahl method is applicable to estimate nitrogen in pyridine. Statement (II):...
- The reaction: ½H₂(g) + AgCl(s) → H⁺(aq) + Cl⁻(aq) + Ag(s) occurs in which of the following galvanic cell:
- Match List-I with List-II. List-I (Complex ion): (A) [Cr(NH₃)₆]³⁺ (B) [NiCl₄]²⁻ (C) [CoF₆]³⁻ (D) [Ni(CN)₄]²⁻ List-II (Spin only...
- Number of molecules having bond order 2 from the following molecule is _______. C₂, O₂, Be₂, Li₂, Ne₂, N₂, He₂
- The total number of carbon atoms present in tyrosine, an amino acid, is _______.
- Molality of an aqueous solution of urea is 4.44 m. Mole fraction of urea in solution is x × 10⁻³. Value of x is _______. (integer...
- Total number of unpaired electrons in the complex ion [Co(NH₃)₆]³⁺ and [NiCl₄]²⁻ is:
- A solution is prepared by adding 1 mole ethyl alcohol in 9 mole water. The mass percent of solute in the solution is _______...
- On combustion Li, Na and K in excess of air, the major oxides formed, respectively, are-Not in JEE Main or NEET syllabus
- The elements with atomic numbers 101 and 104 belong to, respectively-
- The number of isomers possible for [ Pt(en)(NO_2)_2 ] is-
- The region in the electromagnetic spectrum where the Balmer series lines appear is-
- What are the functional groups present in the structure of maltose ?
- On heating, lead (II) nitrate gives a brown gas (A). The gas (A) on cooling changes to a colourless solid/liquid (B). (B) on...
- Match the following : List-I: (i) Foam (ii) Gel (iii) Aerosal (iv) Emulsion List-II: (a) smoke (b) cell fluid (c) jellies (d)...Not in JEE Main or NEET syllabus
- The pair in which both the species have the same magnetic moment (spin only) is-