Question Bank Directory

A molecule among the following that has the maximum dipole moment is:

Identify the incorrect statement among the following options:

For a certain reaction, the rate = $k[A]^2[B]$, when the initial concentration of A is tripled keeping the concentration of B constant, the initial rate would be:

The correct statement among the following is:

Which mixture of the solutions will lead to the formation of negatively charged colloidal $[AgI]I^-$ sol ?

In which of the following pairs, both the species are not isostructural?

For the reaction $2A \rightarrow B + C$, it would be a zero-order reaction when:

The activation energy for a simple chemical reaction $A \rightarrow B$ is $E_a$ in a forward direction. The activation energy for the reverse reaction:

Among the options given below, identify the isoelectronic species:

Match List-I (Molecules) with List-II (Shapes): List-I: (a) $PCl_5$ (b) $SF_6$ (c) $BrF_5$ (d) $BF_3$ List-II: (i) Square pyramidal (ii) Trigonal planar (iii) Octahedral (iv) Trigonal bipyramidal Choose the correct answer from the options given below:

Paramagnetic species among the following is:

If a first-order reaction reaches 60% completion within 60 minutes, approximately how much time would it take for the same reaction to reach 50% completion? ($\log 4=0.60$, $\log 5=0.69$)

In the reaction, $3A \rightarrow 2B$ the rate of reaction $+\frac{d[B]}{dt}$ is equal to:

An organic compound A ($\text{C}_4\text{H}_9\text{Cl}$) in reaction with $\text{Na}$/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative. A is:

A few reactions are given below: (i) $\text{CH}_3\text{CH}_2\text{CH}_2\text{Br} + \text{KOH} \rightarrow \text{CH}_3\text{CH=CH}_2 + \text{KBr} + \text{H}_2\text{O}$ (ii) [Missing] (iii) [Missing] Select the reaction type for the above reactions:

Find the emf of the cell in which the following reaction takes place at $298\text{ K}$: $Ni(s) + 2Ag^+(0.001\text{ M}) \rightarrow Ni^{2+}(0.001\text{ M}) + 2Ag(s)$ (Given that $E^{\circ}_{cell} = 1.05\text{ V}; \frac{2.303RT}{F} = 0.059$)

Half-life period of a first order reaction is $1386 \text{ s}$. The specific rate constant of the reaction is:

When a biochemical reaction is carried out in a laboratory outside the human body in the absence of an enzyme, then the rate of reaction obtained is $10^{-6}$ times. The activation energy of a reaction in the presence of an enzyme is:

Which one of the following statements is incorrect related to Molecular Orbital Theory?

Solution of sucrose (Molar Mass = 342 g mol⁻¹) is prepared by dissolving 34.2 g of it in 1000 g of water. Freezing point of the solution is: (K_f for water is 1.86 K kg mol⁻¹)