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The electronegativity difference between $\text{N}$ and $\text{F}$ is greater than that between $\text{N}$ and $\text{H}$, yet the dipole moment of $\text{NH}_3$ (1.5 D) is larger than that of $\text{NF}_3$ (0.2 D). This is because:
Which of the following pairs of species have the same bond order?
In which of the following molecules, all atoms are coplanar?
Consider the following species: CN$$^+$$, CN$$^-$$, NO and CN. The highest bond order associated with:
What is the correct order of ionic mobility of the following ions in an aqueous solution?
The correct order of energies of molecular orbitals of N$$_2$$ molecule is:
The correct order of dipole moments for molecules NH$$_3$$, H$$_2$$S, CH$$_4$$ and HF is:
Which one of the following molecules is paramagnetic?
A 300-gram radioactive sample has a half-life of 3 hours. After 18 hours the remaining quantity will be:
Arrange the following hydrides in the order of decreasing bond angle: (A) SbH$$_3$$ (B) AsH$$_3$$ (C) PH$$_3$$ (D) NH$$_3$$
In the given reaction the product P is:
The rate of the reaction $2NO + Cl_2 \rightarrow 2NOCl$ is given by the rate equation $\text{rate} = k[NO]^2[Cl_2]$. The value of the rate constant can be increased by:
Activation energy $E_a$ and rate constant ($k_1$ and $k_2$) of a chemical reaction at two different temperatures ($T_1$ and $T_2$) are related by:
An increase in the concentration of the reactants of a reaction leads to a change in:
A first order reaction has a specific reaction rate of $10^{-2} \text{ s}^{-1}$. How much time will it take for $20 \text{ g}$ of the reactant to reduce to $5 \text{ g}$?
The rate of a first-order reaction is $1.5 \times 10^{-2} \text{ mol L}^{-1} \text{ min}^{-1}$ at $0.5 \text{ M}$ concentration of the reactant. The half-life of the reaction is:
The negatively geotropic roots produced by Rhizophora are called:
If the bombardment of $\alpha$-particle on $^{14}_{7}N$ emits protons, then the new atom will be:
If the half-life of a substance is $77 \text{ days}$ then its decay constant ($\text{days}^{-1}$) will be:
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