Chemistry - 2018 Past Year Paper - Chemistry MCQ

NaF, KF, MgO and CaO are crystalline solids. They have NaCl structure. Their lattice energies vary in the order

The major product formed in the following reaction is

The compound that contains the most acidic hydrogen is ​

The C-2 epimer of D-glucose is

The value of integral   is

ghe number of crystal systems and the number of Bravais lattices are, respectively,

For adsorption of a gas on a solid surface, the plot that represents Freundlich isotherm is (x = mass of gas, m = mass of adsorbent, P = pressure)

With respect to periodic properties, the CORRECT statement is

Which plot represents a spectrophotometric titration, where the titrant alone absorbs light in the visible region?

Among the following metal carbonyl species, the one with the highest metal-carbon back bonding is

The CORRECT order of Δ_o (the octahedral crystal field splitting of d orbitals) values for the following anionic metal complexes is

The decay modes of ¹⁴C and ¹⁴O are

Consider the following four xenon compounds: XeF2, XeF4, XeF6 and XeO3 The pair of xenon compounds expected to have non-zero dipole moment is

The CORRECT order of stability for the following carbocations is

Among the dimethylcyclohexanes, which one can be obtained in enantiopure form?

The major product formed in the following reaction is

The product X in the following reaction sequence is

The major product formed in the following reaction is

The major products Y and Z in the following reaction sequence are

The CORRECT order of carbonyl stretching frequencies for the following compounds is

The sequence of three steps involved in the following conversion is​

The CORRECT expression that corresponds to reversible and adiabatic expansion of an ideal gas is 

The electrolyte AB2 ionises in water as

The mean ionic activity coefficient (y± ) is

The reaction, A → Products, follows first-order kinetics. If [A] represents the concentration of reactant at time t, the INCORRECT variation is shown in

The behavior of Cl₂ is closest to ideal gas behavior at

A vector  is rotated through an angle and is also doubled in magnitude resulting inAn acceptable value of x is

With reference to the variation of molar conductivity (L
) with concentration for a strong electrolyte in an aqueous solution, the CORRECT statement is