Chemistry questions
29404 published questions with worked solutions.
- Class XII students were asked to prepare one litre of buffer solution of pH 8.26 by their Chemistry teacher. The amount of...
- At 30°C, the half life for the decomposition of AB_ 2 is 200 s and is independent of the initial concentration of AB_ 2 . The...
- Given below are two statements: one is labelled as Assertion A and other is labelled as Reason R. Assertion A : Finest gold is...Not in JEE Main or NEET syllabus
- The metal that has very low melting point and its periodic position is closer to a metalloid is
- The metal that is not extracted from its sulfide ore isNot in JEE Main or NEET syllabus
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Boric acid is...
- The correct decreasing order of priority of functional groups in naming an organic compound as per IUPAC system of nomenclature is
- Hydrolysis of which compound will give carbolic acid?
- Vulcanization of rubber is carried out by heating a mixture ofNot in JEE Main or NEET syllabus
- Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A:...
- A 10 g mixture of hydrogen and helium is contained in a vessel of capacity 0.0125 m^ 3 at 6 bar and 27°C. The mass of helium in...
- Consider an imaginary ion ^ 48 _ 22 X^ 3- . The nucleus contains 'a'% more neutrons than the number of electrons in the ion. The...
- For the reaction H_ 2 F_ 2 (g) H_ 2 (g) + F_ 2 (g), U = −59.6 kJ mol^ -1 at 27°C. The enthalpy change for the above reaction is...
- The elevation in boiling point for 1 molal solution of non-volatile solute A is 3 K. The depression in freezing point for 2 molal...
- 20 mL of 0.02 M hypo solution is used for the titration of 10 mL of copper sulphate solution, in the presence of excess of KI...
- The number of non-ionisable protons present in the product B obtained from the following reactions is _____. C_ 2 H_ 5 OH + PCl_...
- The spin-only magnetic moment value of the compound with strongest oxidizing ability among MnF_ 4 , MnF_ 3 and MnF_ 2 is _____...
- Total number of isomers (including stereoisomers) obtained on monochlorination of methylcyclohexane is _____.
- A 100 mL solution of CH_ 3 CH_ 2 MgBr on treatment with methanol produces 2.24 mL of a gas at STP. The weight of gas produced is...
- How many of the following drugs is/are examples(s) of broad-spectrum antibiotics? Ofloxacin, Penicillin G, Terpineol, Salvarsan....Not in JEE Main or NEET syllabus