Question

How is the rate of heat transfer from the fin given? h
= convective heat transfer coefficient p = perimeter
of the fin k = thermal conductivity of fin A = cross-
sectional area of the fin TS= Base temperature of
the fin T¥ = Temperature of surrounding fluid.​

Answer 1

$\small \red{ \mid{ \fbox{ \tt{[i] Combination \: reaction}} \mid}}$

A chemical reaction , in which two or more substances combine to form a new substance.

$\small{ \sf \:Ex - (i)2H_2 + O_2 →2H_2O} \\ \small{ \sf \: \: \: \: \: \: \: \: \: \: \: (ii) N_2 + 3H_2 →2NH_3}$

$\small \blue{ \mid{ \fbox{ \tt{[ii] Decomposition \: reaction}} \mid}}$

A chemical reaction , in which more than one product is obtained from a single reactant.

$\small{ \sf \:Ex - (i)2H_2O →2H_2 + O_2} \\ \small{ \sf\: \: \: \: \: \: \: \: \: \: \: (ii)CaCO_3→CaO + CO_2}$

$\small \green{ \mid{ \fbox{ \tt{[iii] Displacement \: reaction}} \mid}}$

A chemical reaction , in which one element displaces other element in a compound.

$\small{ \sf \:Ex - (i)Fe + CuSO_4 →FeSO_4 + Cu} \\ \small{ \sf \: \: \: \: \: \: \: \: \: \: \: (ii)Mg + 2HCl →MgCl_2 + H_2}$

$\small \pink{ \mid{ \fbox{ \tt{[iv] Neutralisation \: reaction}} \mid}}$

A chemical reaction , between acid and base to form salt and water.

$\small{ \sf \:Ex - (i)NaOH + HCl→NaCl + H_2O} \\ \small{ \sf \: \: \: \: \: \: \: \: \: \: \: (ii)Mg +H _2SO_4 →MgSO_4 + 2H_2O}$