Chemistry questions
29404 published questions with worked solutions.
- A mixture of 1 mole of H_2O and 1 mole of CO is taken in a 10 litre container and heated to 725 K. At equilibrium 40% of water by...
- The incorrect statement regarding the reaction given below is – (N,N-dimethylaniline + NaNO_2 + HX 'B')
- The bond order and magnetic property of acetylide ion are same as that of -
- Match List I with List II. List I (Example): A. 2-chloro-1, 3-butadiene B. Nylon 2-nylon 6 C. Polyacrylonitrile D. Dacron List II...Not in JEE Main or NEET syllabus
- For lead storage battery pick the correct statements A. During charging of battery, PbSO_4 on anode is converted into PbO_2 B....
- Given below are two statements: Statement I: SbCl_5 is more covalent than SbCl_3. Statement II: The higher oxides of halogens...
- Four gases, A, B, C and D have critical temperatures 5.3, 33.2, 126.0 and 154.3K respectively. For their adsorption on a fixed...Not in JEE Main or NEET syllabus
- Given below are two statement : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : 5f electron...
- 2-hexene [ (ii) H_2O] (i) O_3 Products The two products formed in above reaction are-
- Match List I with List II. List I (Type of Hydride): A. Electron deficient hydride B. Electron rich hydride C. Electron precise...Not in JEE Main or NEET syllabus
- The density of alkali metals is in the order -Not in JEE Main or NEET syllabus
- Given below are two statements: Statement I: Boron is extremely hard indicating its high lattice energy. Statement II: Boron has...
- A metal chloride contains 55.0% of chlorine by weight. 100 mL vapours of the metal chloride at STP weigh 0.57 g. The molecular...
- The reaction 2NO + Br_2 2NOBr takes place through the mechanism given below NO + Br_2 NOBr_2 (fast) NOBr_2 + NO 2NOBr (slow) The...
- 80 mole percent of MgCl_2 is dissociated in aqueous solution. The vapour pressure of 1.0 molal aqueous solution of MgCl_2 at 38°C...
- In an oligopeptide named Alanylglycylphenyl alanyl isoleucine, the number of sp^2 hybridised carbons is _________.
- The mass of NH_3 produced when 131.8 kg of cyclohexane carbaldehyde undergoes Tollen's test is _____kg. (Nearest Integer) Molar...
- An analyst wants to convert 1 L HCl of pH = 1 to a solution of HCl of pH 2. The volume of water needed to do this dilution is...
- Match List-I with List-II. List-I (Reagent): A. KOH (alc) B. KCN (alc) C. AgNO_2 D. H_3CCOOAg List-II (Product): I. Nitrile II....
- In the wet tests for detection of various cations by precipitation, Ba^ 2+ cations are detected by obtaining precipitate of