Chemistry questions
29404 published questions with worked solutions.
- In which of the following equilibria, K_p and K_c are NOT equal?
- Given below are two statements: Statement I : The boiling point of three isomeric pentanes follows the order n-pentane >...
- Match List I with List II. List I (Reaction): A. cyclohexene 2 dialdehyde (ring cleaved: OHC-(CH_2)_4-CHO) B. benzene...
- Given below are two statements: Statement I : The boiling point of hydrides of Group 16 elements follow the order H _2 O > H _2...
- Given below are two statements: Statement I : Aniline does not undergo Friedel-Crafts alkylation reaction. Statement II : Aniline...
- Which reaction is NOT a redox reaction?
- Given below are two statements : Statement I : Both [ Co ( NH _3)_6]^ 3+ and [ CoF _6]^ 3- complexes are octahedral but differ in...
- Given below are two statements : Statement I : [ Co ( NH _3)_6]^ 3+ is a homoleptic complex whereas [ Co ( NH _3)_4 Cl _2]^ + is...
- The ratio of mass percentage (w/w) of C : H in a hydrocarbon is 12 : 1. It has two carbon atoms. The weight (in g) of CO₂(g)...
- SF₄ is isostructural with: A. BrF₄⁻ B. CH₄ C. IF₄⁺ D. XeF₄ E. XeO₂F₂ Choose the correct answer from the options given below:
- Gas 'A' undergoes change from state 'X' to state 'Y'. In this process, the heat absorbed and work done by the gas is 10 J and 18...
- At 25°C, 20.0 mL of 0.2 M weak monoprotic acid HX is titrated against 0.2 M NaOH. The pH of the solution (a) at the start of the...
- Consider the reaction aX → bY, for which the rate constant at 30°C is 1 × 10⁻³ mol⁻¹ L s⁻¹. Which of the following statements are...
- The correct set that contains all kinds (basic, acidic, amphoteric and neutral) of oxides is:
- Given below are two statements: Statement I: The second ionization enthalpy of B, Al and Ga is in the order of B > Al > Ga....
- Given below are two statements: Statement I: Among Zn, Mn, Sc and Cu, the energy required to remove the third valence electron is...
- Which of the following complexes will show coordination isomerism? A. [Ag(NH₃)₂][Ag(CN)₂] B. [Co(NH₃)₆][Cr(CN)₆] C....
- Complete combustion of X g of an organic compound gave 0.25 g of CO₂ and 0.12 g of H₂O. If the % of carbon is 25% and of hydrogen...
- Given below are two statements: Statement I: In O₂N-C₆H₄-CH⁺-C₆H₄-OCH₃, the carbocation is stabilised by +R effect of −OCH₃...
- The compound (X) on (i) on heating in the presence of anhydrous AlCl₃ and HCl gas gives 2,4-dimethylpentane and (ii)...