MCQ
$B.P.$ of ${H_2}O\,({100\,^o}C)$ and ${H_2}S\,( - {42\,^o}C)$ explained by
  • A
    Vander Waal's forces
  • B
    Covalent bond
  • Hydrogen bond
  • D
    Ionic bond

Answer

Correct option: C.
Hydrogen bond
(c) Boiling point of ${H_2}O$ is more than that of ${H_2}S$ because ${H_2}O$ forms hydrogen bonding while ${H_2}S$ does not.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Ethylene possess
A species having carbon with sextet of electrons and can act as electrophile is called
Consider the following reversible chemical reactions

${A_2}(g)\, + \,{B_2}(g)\,\overset {{K_1}} \leftrightarrows \,2AB(g)\,\,\,......(1)$

$6AB\,(g)\,\,\overset {{K_2}} \leftrightarrows \,\,3{A_2}(g)\, + \,3{B_2}(g)......(2)$

The relation between $K_1$ and $K_2$ is

de-Broglie equation is
$1\,mol$ of oxygen gas are heated at constant volume from $20\,^oC$ to $30\,^oC$ . What will be change in the internal energy of gas? Molar heat capacity of oxygen at constant pressure, $ C_P= 7.03\,cal\,mol^{-1}\,K^{-1}$ and $R = 2\,cal\,mol^{-1}\,K^{-1}$ ? .....$cal$
Identify the correct decreasing order of priority of the functional groups from the following:
If EA, EB and EC represent kinetic energies of an electron, alpha particle and proton respectively and each moving with same de-Broglie wavelength, then choose the correct increasing representation,
The dipole moment is the highest for
In the gas phase reaction, ${C_2}{H_4} + {H_2} $ $\rightleftharpoons$ ${C_2}{H_6}$, the equilibrium constant can be expressed in units of
 Given below are two statements : one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$ :

Assertion $(A) :$ A simple distillation can be used to separate a mixture of propanol and propanone.

Reason $(R) :$ Two liquids with a difference of more than $20^{\circ} \mathrm{C}$ in their boiling points can be separated by simple distillations.

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