The $R.Q.$ (Respiratory Quotient) of fat is:

The Respiratory Quotient $(RQ)$ for organic acids is ......... .

When the respiratory substrate is ......,the volume of $CO_2$ evolved is more than the volume of $O_2$ consumed.

The respiratory quotient $(RQ)$ of a germinating castor seed is

Arrange the $RQ$ value of the following respiratory substrates in ascending order:
$(a) C_{4}H_{6}O_{5}$ (Malic acid)
$(b) C_{6}H_{12}O_{6}$ (Glucose)
$(c) C_{18}H_{36}O_{2}$ (Stearic acid)
$(d) \text{Succulents (night)}$

$R.Q.$ is defined as: