In isothermal ideal gas compression

Match the process given in Column - I with the entropy change in Column - II {: ( "Column I", " Column II"),( "(a)Reversible adiabatic ideal gas compression.", " (p)"DeltaS_("surr") = 0 ) , ("(b)Reversible isothermal ideal gas expansion." , "(q)" DeltaS_("system") = 0),(" (c)Adiabatic free expansion " (p_(ext) = 0)" of an ideal gas" , "(r)" DeltaS_("surr") gt 0 ) , ( "(d)Irreversible isothermal ideal gas compression." , " (s)" DeltaS_("surr") lt 0 ):}

In an isothermal reversible compression of an ideal gas the sign of q, DeltaS and w are respectively

If an ideal gas is compressed isothermally then

When an ideal gas is compressed isothermally then its pressure increase because:

When an ideal gas is compressed isothermally then its pressure increase because: