MCQ
Which heat is produced throughout the conducting wire?
- APetlier heat
- BThomson effect heat
- ✓Joule heat
- DNone of these
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$H _2 O (\ell) \rightarrow H _2 O ( g )$
at $T =100^{\circ} C$ and $1$ atmosphere pressure, the correct choice is :
$CH \equiv CH\xrightarrow[{(excess)}]{{NaN{H_2}/liq.N{H_3}}}A\xrightarrow{{2C{H_3} - I}}B\xrightarrow[{quinolene}]{{{H_2}/Pd - BaS{O_4}}}C$
$C\xrightarrow[{quinolene}]{{{H_2}/Pd - BaS{O_4}}}\xrightarrow[{liq.\,N{H_3}}]{{NaN{H_2}}}D$
| Column $I$ (Molecule/ion) | Column $II$ (Hybridisation) |
| $(A)$ $H_3O^+$ ion | $(P)$ $sp$ |
| $(B)$ $NH_2^-$ ion | $(Q)$ $sp^2$ |
| $(C)$ $NO_3^-$ ion | $(R)$ $sp^3$ |
| $(D)$ $ClF_3$ | $(S)$ $sp^3d$ |
$4B(s) + 3O_2\,(g) \rightarrow 2B_2O_3\,(g)$ ; $E^o_{cell} = 1.433$ $volt$ What is molar entropy (in $J/K$) of oxygen gas
Given ${\left( {{\Delta _f}{H^o}} \right)_{{B_2}{O_3}}}\left( g \right) = - 840\,\frac{{KJ}}{{mol}}$
${\left( {S_m^o} \right)_{{B_2}{O_3}}} \left( g \right) = 280J/K - mol$
${{(S_{m}^{o})}_{B}}\,\,\left( s \right)=10\,J/K-mol$