NEET Practice Questions (MCQs) with Answers & Solutions

The plot of osmotic pressure ($\Pi$) vs concentration ($\text{mol L}^{-1}$) for a solution gives a straight line with slope $25.73\ \text{L bar mol}^{-1}$. The temperature at which the osmotic pressure measurement is done is:

(Use $R = 0.083\ \text{L bar mol}^{-1}\text{K}^{-1}$)

Identify the major product C formed in the following reaction sequence:

$CH_3\text{-}CH_2\text{-}CH_2\text{-}I \xrightarrow{NaCN} A \xrightarrow[\text{Partial hydrolysis}]{OH^-} B \xrightarrow{NaOH/Br_2} C\ (\text{major})$

During the preparation of Mohr's salt solution (Ferrous ammonium sulphate), which of the following acid is added to prevent hydrolysis of $\text{Fe}^{2+}$ ion?

The rate of a reaction quadruples when temperature changes from $27^\circ C$ to $57^\circ C$. Calculate the energy of activation. Given $R = 8.314\ J\,K^{-1}\,mol^{-1}$, $\log 4 = 0.6021$.

Mass in grams of copper deposited by passing $9.6487$ A current through a voltmeter containing copper sulphate solution for 100 seconds is:

(Given: Molar mass of $Cu : 63\ g\,mol^{-1}$, $1F = 96487\,C$)

The cofactor of the enzyme carboxypeptidase is:

Given below are two statements:

Statement I: Parenchyma is living but collenchyma is dead tissue.

Statement II: Gymnosperms lack xylem vessels but presence of xylem vessels is the characteristic of angiosperms.

In the light of the above statements, choose the correct answer from the options given below:

Spindle fibers attach to kinetochores of chromosomes during

In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it?

The equation of Verhulst-Pearl logistic growth is $\dfrac{dN}{dt} = rN\left[\dfrac{K-N}{K}\right]$. From this equation, $K$ indicates: