NEET Practice Quiz

Question 1

A particle is projected vertically upwards with speed $20\,\text{m s}^{-1}$. Taking $g=10\,\text{m s}^{-2}$, the ratio of the distance travelled in the first second to the distance travelled in the last second of upward motion is:

Accepted Answer

$3:1$

Question 2

For the reaction $N_2(g)+3H_2(g)\rightleftharpoons 2NH_3(g)$, the value of $K_p$ at a certain temperature is $1.6\times 10^{-4}$. If $R=0.08\,\text{L atm mol}^{-1}\text{K}^{-1}$ and $T=500\,\text{K}$, the corresponding value of $K_c$ is:

Accepted Answer

$2.56\times 10^{-1}$

Question 3

In a typical angiosperm embryo sac, the total number of nuclei and the total number of cells at maturity are respectively:

Accepted Answer

$8$ nuclei and $7$ cells

Question 4

A capacitor of capacitance $C$ is charged to a potential difference $V$. It is then disconnected from the battery and connected in parallel with an identical uncharged capacitor. The loss of electrostatic energy is:

Accepted Answer

$\frac{1}{4}CV^2$

Question 5

Which one of the following is the correct order of increasing first ionisation enthalpy?

Accepted Answer

$B<Be<C<O<N$

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