Chemistry questions
29404 published questions with worked solutions.
- Given below are two statements. Statement I : Phenols are weakly acidic. Statement II : Therefore they are freely soluble in NaOH...
- 17.0 g of NH_ 3 completely vaporises at −33.42°C and 1 bar pressure and the enthalpy change in the process is 23.4 kJ mol^ -1 ....
- 1.2 mL of acetic acid is dissolved in water to make 2.0 L of solution. The depression in freezing point observed for this...
- A dilute solution of sulphuric acid is electrolysed using a current of 0.10 A for 2 hours to produce hydrogen and oxygen gas. The...
- The activation energy of one of the reactions in a biochemical process is 532611 J mol^ -1 . When the temperature falls from 310...
- The number of terminal oxygen atoms present in the product B obtained from the following reaction is _____. FeCr_ 2 O_ 4 + Na_ 2...
- An acidified manganate solution undergoes disproportionation reaction. The spin-only magnetic moment value of the product having...
- During sodium nitroprusside test of sulphide ion in an aqueous solution, one of the ligands coordinated to the metal ion is...
- The complete hydrolysis of ICl, ClF_3 and BrF_5 , respectively, gives
- The correct statement(s) about intermolecular forces is(are)
- The density (in g cm⁻³) of the metal which forms a cubic close packed (ccp) lattice with an axial distance (edge length) equal to...Not in JEE Main or NEET syllabus
- The solubility of barium iodate in an aqueous solution prepared by mixing 200 mL of 0.010 M barium nitrate with 100 mL of 0.10 M...
- Adsorption of phenol from its aqueous solution on to fly ash obeys Freundlich isotherm. At a given temperature, from 10 mg g⁻¹...Not in JEE Main or NEET syllabus
- Consider a reaction A + R ⟶ Product. The rate of this reaction is measured to be k[A][R]. At the start of the reaction, the...
- At 300 K, an ideal dilute solution of a macromolecule exerts osmotic pressure that is expressed in terms of the height (h) of the...
- An electrochemical cell is fueled by the combustion of butane at 1 bar and 298 K. Its cell potential is X F 10^3 volts, where F...
- The sum of the spin only magnetic moment values (in B.M.) of [Mn(Br)_6]^ 3- and [Mn(CN)_6]^ 3- is _____.
- A linear octasaccharide (molar mass = 1024 g mol⁻¹) on complete hydrolysis produces three monosaccharides: ribose, 2-deoxyribose...
- Which of the following options are correct for the reaction? 2[Au(CN)_2]^-(aq)+Zn(s) 2Au(s)+[Zn(CN)_4]^ 2- (aq) A. Redox reaction...
- The standard electrode potential of M^+/M in aqueous solution does not depend on