Chemistry questions
29404 published questions with worked solutions.
- Match the LIST-I with LIST-II. List-I (Deficiency Disease): A. Scurvy, B. Convulsions, C. Cheilosis, D. Xerophthalmia. List-II...
- Match the LIST-I with LIST-II. List-I (Amino acid): A. Glutamine, B. Lysine, C. Tyrosine, D. Serine. List-II (Positive...
- First and second ionization enthalpies of lithium are 520 kJ mol⁻¹ and 7297 kJ mol⁻¹ respectively. Energy required to convert 3.5...
- Consider the following sequence of reactions: diazoaminobenzene (Ph−N=N−NH−Ph) (i) HCl (ii) Aniline (in excess) (iii) Warm...
- 4.7 g of phenol is heated with Zn to give product X. If this reaction goes to 60% completion then the number of moles of compound...
- Sucrose hydrolyses in acidic medium into glucose and fructose by first order rate law with t₁/₂=3 hour. The percentage of sucrose...
- Consider the reaction X⇌Y at 300 K. If ΔH° and K are 28.40 kJ mol⁻¹ and 1.8×10⁻⁷ at the same temperature, then the magnitude of...
- Match List-I with List-II. List-I (Mass of substance): A. 1.8 mg water, B. 9.8 mg sulphuric acid, C. 1.8 mg carbon, D. 5.85 mg...
- Which of the following statements are not correct? A. For water, magnitude of K_b is more than the magnitude of K_f. B. The...
- Consider the following reactions in which all the reactants and products are present in gaseous state 2xy ⇌ x₂ + y₂ K₁ = 2.5×10⁵...
- Match List-I with List-II. List-I (Electronic configuration of neutral atom (where n = 2)): A. ns², B. ns²np¹, C. ns²np³, D....
- Find the correct statements related to group 15 hydrides. A. Reducing nature increases from NH₃ to BiH₃ B. Tendency to donate...
- Given below are two statements: Statement I: The number of pairs among [Ti⁴⁺, V²⁺], [V²⁺, Mn²⁺], [Mn²⁺, Fe³⁺] and [V²⁺, Cr²⁺] in...
- Given below are two statements for catalytic properties of transition metals. Statement I: First row transition metals which act...Not in JEE Main or NEET syllabus
- Given below are two statements: Statement I: Vapours of the liquid with higher boiling point condense before vapours of the...
- n-Butane on monochlorination under photochemical condition gives an optically active compound "P". "P" on further chlorination...
- Given below are two statements: Statement I: Due to increase in van der Waals forces, the order of boiling points is CH₃CH₂CH₂I >...
- Which statements are True? A. In Hoffmann bromamide degradation, 4 moles of NaOH and 2 moles of Br₂ are consumed per mole of an...
- The incorrect statement from the following with respect to carbohydrates is:
- Which of the following amino acid will give violet coloured complex with neutral ferric chloride solution?