List of practice Questions

The correct order of electronegativity of the given elements is
Which of the following terrestrial biomes has the highest animal diversity?
An electric circuit with a resistor of constant resistance ‘R’ is maintained at a constant voltage ‘V’. Based on Ohm’s law, if the current ‘I’ through the circuit is doubled, the power ‘P’ dissipated across the resistor is
Sequence comparison of which of the following genes is used as a measure of evolutionary divergence across bacterial species?
After how many cycles of polymerase chain reaction (PCR), the amplified product of required length is generated for the first time from a chromosomal DNA template?
In humans, Down syndrome is caused by
Which one of the following hormones is produced by the adrenal gland?

One mole of a monoatomic ideal gas starting from state A, goes through B and C to state D, as shown in the figure. Total change in entropy (in J K\(^{-1}\)) during this process is ............... 

The number of chiral carbon centers in the following molecule is ............... 

Consider the following matrices A and B.
\[ A = \begin{pmatrix} 1 & 2 & 0 & 0 \\ 3 & 4 & 0 & 0 \\ 0 & 5 & 5 & 0 \\ 0 & 0 & 6 & 7 \\ 0 & 0 & 8 & 9 \end{pmatrix} \quad \text{and} \quad B = \begin{pmatrix} 10 & 11 & 0 & 0 & 0 \\ 12 & 13 & 0 & 0 & 0 \\ 0 & 0 & 4 & 0 & 0 \\ 0 & 0 & 15 & 16 & 0 \\ 0 & 0 & 17 & 18 & 0 \end{pmatrix} \]

If \( C = AB \), the sum of the diagonal elements of \( C \) is ..............

A tube fitted with a semipermeable membrane is dipped into 0.001 M NaCl solution at 300 K as shown in the figure. Assume density of the solvent and solution are the same. At equilibrium, the height of the liquid column \( h \) (in cm) is ......... 

An electron at rest is accelerated through 10 kV potential. The de Broglie wavelength (in A) of the electron is .............

The number of stereoisomers possible for the following compound is .............. 

Number of \( ^1H \) NMR signals observed for the following compound is ............. 

Consider \( \mathbf{C} = \mathbf{A} \times \mathbf{B} \), where \( \mathbf{A} = 3\hat{i} - 2\hat{j} + 5\hat{k} \) and \( \mathbf{B} \) is a unit vector in the \( xy \)-plane, making an angle of 37° with the \( x \)-axis. The projection of \( \mathbf{C} \) on the \( x \)-axis is ................ (round off to one decimal place)

\[ \int_0^\infty x e^{-x} dx = \text{...............} \] (round off to the nearest integer)

The product(s) in the following transformation is(are) 

The major products P and Q of the following reactions are 

The major product in the following reaction sequence is 

Pericyclic reactions involved in the synthesis of Vitamin D\(_2\) from Ergosterol are 

The correct order of the rate of mononitration using conc. H\(_2\)SO\(_4\)/conc. HNO\(_3\) at room temperature is

The major products P and Q of the following transformations are 

The major product of the following transformation is 

The figures (I, II, III) given below schematically represent variation of surface tension of three different aqueous solutions with increasing concentration of each of the solutes (surfactant, sodium chloride, and n-propanol). Match the figures with appropriate solutes and choose the correct option. 

The correct option for \( x \) which satisfies the following equation is \[ \begin{vmatrix} x & 2 & 3 \\ 4 & x & 6 \\ x & 8 & 9 \end{vmatrix} = \begin{vmatrix} 102 & 18 & 36 \\ 1 & 3 & 4 \\ 17 & 3 & 6 \end{vmatrix} \]