NEET Chemistry MCQs

A mixture of two volatile liquids A and B shows a negative deviation from Raoult's law. Which of the following statements is INCORRECT regarding this mixture?

Two vectors $\vec{A}$ and $\vec{B}$ have magnitudes A and B respectively. If the magnitude of their cross product is $\frac{AB}{\sqrt{2}}$, which of the following could be the angle between $\vec{A}$ and $\vec{B}$?

For any two non-zero vectors $\vec{A}$ and $\vec{B}$, if $|\vec{A} imes \vec{B}| = \vec{A} \cdot \vec{B}$, the angle between $\vec{A}$ and $\vec{B}$ is:

1.2 g of a metal displaced 0.44 g of H$_2$ from an acid. The equivalent weight of the metal is:

An element forms an oxide with the formula X$_2$O$_3$. If the equivalent weight of the element is 9, what is its atomic weight?

The equivalent weight of oxalic acid (H$_2$C$_2$O$_4$.2H$_2$O) is:

If $\vec{A} = 2\hat{i} + 3\hat{j} - \hat{k}$ and $\vec{B} = \hat{i} + \hat{j} + \hat{k}$, find the projection of $\vec{A}$ on $\vec{B}$.

Consider the hypothetical molecule $AB_2$, where A and B are nonmetals. If the molecule has a bent shape with a bond angle significantly less than 120°, which of the following is the MOST likely hybridization of the central atom A?

Consider the isoelectronic species $N_2$, $CO$, and $CN^-$. Arrange them in increasing order of bond length.

The bond length in $O_2$ is experimentally determined to be 121 pm. Using this information and the concept of bond order, predict the approximate bond length in $O_2^+$ (superoxide ion).