Which of the following tests does glucose give?

Tollen’s test

Despite having a -CHO group, glucose does not react with NaHSO₃ to form an addition product and give either Schiff’s test or 2,4-DNP test like other aldehydes. However, it forms a silver mirror on treatment with Tollen’s reagent. These observations indicate the existence of glucose in other forms and gave way to the cyclic structure of glucose.