Which of the following products is formed by the Krebs cycle?

When $1$ molecule of pyruvate is completely oxidized,how many moles of carbon dioxide are produced?

Match the columns based on the number of carbon atoms in the compounds involved in the Krebs cycle:

Column-$I$	Column-$II$
$(a)$ $4$ $C$ compound	$(1)$ Acetyl $CoA$
$(b)$ $2$ $C$ compound	$(2)$ Pyruvate
$(c)$ $5$ $C$ compound	$(3)$ Citric acid
$(d)$ $3$ $C$ compound	$(4)$ $\alpha$-Ketoglutaric acid
	$(5)$ Malic acid

Select the correct sequence of intermediates formed during the Krebs cycle.

Which of the following is a $5$-carbon component of the Krebs cycle?

Match the enzyme involved in the Krebs cycle given in column-$I$ with the reactions they catalyse given in column-$II$. Choose the correct option.

Column $I$	Column $II$
$i.$ Isocitrate dehydrogenase	$a.$ Citrate $\rightarrow$ Cis-aconitate
$ii.$ Fumarase	$b.$ Succinate $\rightarrow$ Fumarate
$iii.$ Aconitase	$c.$ Fumarate $\rightarrow$ Malate
$iv.$ Succinate dehydrogenase	$d.$ Isocitrate $\rightarrow$ Oxalosuccinic acid