Engineering Questions — Chemistry — JEE Main

Q.66. Given below are some of the statements about Mn and Mn₂O₇. Identify the correct statements A. Mn forms the oxide Mn₂O₇ in which Mn is in its highest oxidation state. B. Oxygen stabilizes the Mn

Q.58. Decomposition of A is a first order reaction at T(K) and is given by A(g) → B(g) + C(g). In a closed 1 L vessel, 1 bar A(g) is allowed to decompose at T(K). After 100 minutes, the total pressure

Q.59. Given below are two statements : Statement-I : Aluminium upon reaction with NaOH forms [Al(OH)₄]⁻ ion. Statement-II : The geometry of ICl₂, ClO₃⁻ and IBr₂⁻ is square planar, pyramidal and linear

Q.63. Consider the given graph showing variation of reactant concentration with time. Three different reactions were started with identical initial concentration of reactants. Which of the following s

Q.52. Given below are two statements : Given : Molar mass of C, H, O, Cl are 12, 1, 16 and 35.5 g mol⁻¹, respectively. Statement I : In 30%(w/w) solution of methanol in CCl₄ (at T K), the mole fractio

Q.64. Compound (X) is subjected to the sequence of reactions as shown above. Molar mass of the major product (Y) formed is ______ gmol⁻¹. (Given molar mass in g mol⁻¹ C : 12, H : 1, O : 16) [Figure: R

Q.61. Given below are two statements for catalytic properties of transition metals : Statement I: First row transition metals which act as catalyst utilise their 3d electrons only for formation of bon

Q.67. Consider the following sequence of reactions [Figure: Reaction scheme starting with phenol, reacting with (i) Cu/573 K, (ii) H, PhCOOH to give product P]. The major product P is :

Q.62. Given below are two statements : Statement I: Vapours of the liquid with higher boiling point condense before vapours of the liquid with lower boiling points in fractional distillation. Statemen

Q.71. First and second ionization enthalpies of lithium are 520 kJ mol and 7297 kJ mol respectively. Energy required to convert 3.5 mg lithium (g) into Li(g) [Li(g) Li(g)] is ______ kJ mol. (nearest