Recall the structure and properties of sucrose

Sucrose is a disaccharide made up of:

• one unit of $\alpha$-D-glucose
• one unit of $\beta$-D-fructose

These two monosaccharides are joined through a glycosidic linkage.

Check the linkage carefully

In sucrose, the bond is between:

• $C_1$ of $\alpha$-D-glucose, and
• $C_2$ of $\beta$-D-fructose

So the linkage is: \alpha\text{-}D\text{-glucose}(1\rightarrow 2)\beta\text{-}D\text{-fructose}

Therefore, statement A says the linkage is between $C_1$ of glucose and $C_1$ of fructose, which is incorrect.

Check statement B

Sucrose itself is commonly called cane sugar or table sugar.

On hydrolysis, it gives an equimolar mixture of glucose and fructose, which is called invert sugar.

Hence, saying sucrose is also named invert sugar is not true.

Check statement C

In sucrose, both anomeric carbons are involved in glycosidic bond formation, so it cannot open up to give a free aldehyde/ketone form.

Hence, sucrose is a non-reducing sugar.

So C is true.

Check statement D

Hydrolysis of sucrose gives: $\text{sucrose} + H_2O \rightarrow \text{glucose} + \text{fructose}$

So D is true.

Conclusion

The statements that are not true are:

• A
• B

So this question actually has two incorrect statements, not one.

Comparison with stored answer

The stored correct answer is A only.

But from standard biomolecule chemistry, B is also false, because sucrose is not itself called invert sugar; its hydrolysis product is called invert sugar.