Engineering Thermodynamics
Relation between cp and cv is given by (where cp = Specific heat at constant pressure, cv = Specific heat at constant volume, γ = cp/cv, known as adiabatic index, and R = Gas constant)

cv = R/ γ-1
cv/ cp =R
cp - cv = R
Both (B) and (C)

ANSWER DOWNLOAD EXAMIANS APP

Engineering Thermodynamics
Mond gas is obtained by

Passing air and a large amount of steam over waste coal at about 650°C
Carbonisation of bituminous coal
Passing steam over incandescent coke
Partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast

ANSWER DOWNLOAD EXAMIANS APP