List of practice Questions

The unit of the constant ‘a’ in van der Waals equation of state of a real gas can be expressed as
Among the following, microwave active molecule(s) is/are
The true statement(s) regarding the brown ring test carried out in the laboratory for the detection of NO\(_3^-\) is/are
The true statement(s) regarding the carbonic anhydrase enzyme is/are
The correct statement(s) about NO$_2$, NO$_2^+$ and CO$_2$ is/are
The compound formed upon subjecting an aliphatic amine to Lassaigne’s test is
Among the following compounds, the one having the lowest boiling point is
The correct option having one complex from each of the following pairs which is more reactive towards the oxidative addition reaction by hydrogen molecule is
Among the following, the correct statement is
The ratio of the nearest neighbor atomic distances in body-centered cubic (bcc) and face-centered cubic (fcc) crystals with the same unit cell edge length is
In qualitative inorganic analysis of metal ions, the ion which precipitates as sulfide in the presence of H$_2$S in warm dilute HCl is
The correct statement regarding the observed magnetic properties of NO, O$_2$, B$_2$ and C$_2$ in their ground state is
The correct option for the number of bending modes of vibration in each of H$_2$O, CS$_2$, and SO$_2$ molecules, respectively, is
The total number of degrees of freedom of an HBr molecule that is constrained to translate along a straight line but does not have any constraints for its rotation and vibration is
According to the kinetic theory of gases, the ratio of the root mean square velocity of molecular oxygen and molecular hydrogen at 300 K is
The half-life of the chemical reaction, A \(\rightarrow\) Product, for initial reactant concentrations of 0.1 and 0.4 mol L\(^{-1}\) are 200 and 50 s, respectively. The order of the reaction is
For three non-coplanar vectors a, b and c, the expression a $\cdot$ (b $\times$ c) can be written as
Correct trend in the bond order is
The correct option for the metal ion present in the active site of myoglobin, hemocyanin and vitamin B12, respectively, is
The thermodynamic criterion for spontaneity of a process in a system under constant volume and temperature and in the absence of any work other than expansion work (if any) is
The number of vibrational mode(s) of a carbon dioxide molecule that can be detected using infrared spectroscopy is
Let \( \mathbf{a} = 4i - 2j + 6k \) and \( \mathbf{b} = 7i + j - 12k \). If \( \mathbf{a} \times \mathbf{b} = \alpha i + \beta j + \gamma k \), then the value of \( \alpha + \beta + \gamma \) equals .............

The standard emf of a cell (in V) involving the reaction, 

A schematic representation of restriction fragment length polymorphism (RFLP) analysis of a sample population is shown below. The number of people exhibiting a given pattern is indicated above the lanes. 

Calculate the frequency of the 6.5 kb allele. [Correct to two decimal places] 
 

Heterozygous female fruit flies with gray body and purple eyes were mated with homozygous males with black body and red eyes. The number of offspring obtained and their phenotypes are shown below: 

Calculate the recombination frequency.