Chemistry questions
29404 published questions with worked solutions.
- _fG° at 500 K for substance 'S' in liquid state and gaseous state are + 100.7 kcal mol^ -1 and + 103 kcal mol^ -1 , respectively....
- In XeO_3F_2, the number of bond pair (s), π-bond (s) and lone pair (s) on Xe atom respectively are -
- Following four solutions are prepared by mixing different volumes of NaOH and HCl of different concentrations. pH of which one of...
- Given (i) 2Fe_2O_3(s) → 4Fe(s) + 3O_2(g); _rG° = + 1487.0 kJ mol^ -1 (ii) 2CO(g) + O_2(g) → 2CO_2(g); _rG° = –514.4 kJ mol^ -1...
- At a certain temperature in a 5L vessel, 2 moles of carbon monoxide and 3 moles of chlorine were allowed to reach equilibrium...
- The correct order of spin-only magnetic moments among the following is : (Atomic number : Mn = 25, Co = 27, Ni = 28, Zn = 30)
- When 2-butyne is treated with H_2/Lindlar's catalyst, compound X is produced as the major product and when treated with Na/liq....
- For a first order reaction, A → P, t_ 1/2 (half-life) is 10 days. The time required for 1 4 ^ th conversion of A (in days) is –...
- Lithium aluminium hydride reacts with silicon tetrachloride to form -
- The correct order of electron affinity is -
- Two 5 molal solutions are prepared by dissolving a non-electrolyte, non-volatile solute separately in the solvents X and Y. The...
- All of the following share the same crystal structure except -Not in JEE Main or NEET syllabus
- The total number of possible isomers for square-planar [Pt(Cl)(NO_2)(NO_3)(SCN)]^ 2- is-
- Two compounds I and II are eluted by column chromatography (adsorption of I > II). Which one of the following is a correct...
- The number of P–O bonds in P_4O_6 is -
- For per gram of reactant, maximum quantity of N_2 gas is produced in which of the following thermal decomposition reactions ?...
- If x gram of gas is adsorbed by m gram of adsorbent at pressure P, the plot of log x m versus log P is linear. The slope of the...Not in JEE Main or NEET syllabus
- In the leaching method, bauxite ore is digested with a concentrated solution of NaOH that produces 'X', when CO_2 gas is passed...Not in JEE Main or NEET syllabus
- The maximum number of possible oxidation states of actinoides are shown by:
- In the following reaction: carbonyl compound + MeOH ⇌ acetal. Rate of the reaction is the highest for: