Question

Is “that” an interrogative pronoun?

Answer 1

No

Because :

An interrogative pronoun is a pronoun which is used to make asking questions easy. There are just five interrogative pronouns. Each one is used to ask a very specific question or indirect question. ... The five interrogative pronouns are what, which, who, whom, and whose.

Answer 2

${\fbox{\fbox{\huge\sf\pink{AnsWeR}}}}$

$\sf\blue{No \:"that"\: is \:not \:interrogative\: pronoun }$

Know more-:

$\sf\purple{1.What \:did \:you \:buy \:at\: boutique?}$

INTERROGATIVE PRONOUN

☞ We use interrogative pronouns to ask questions. They are: who, which, whom, what and whose. These are also known as wh-words.

$\sf\red{2.That \:is\: not\: my\: bag. It\: is\: yours.}$

POSSESSIVE PRONOUN

☞Possessive pronouns show that something belongs to someone. The possessive pronouns are my, our, your, his, her, its, and their. There's also an “independent” form of each of these pronouns: mine, ours, yours, his, hers, its, and theirs.

$\sf\green{3.The \:boy \:travelled\: me.}$

PERSONAL PRONOUN

☞I, you, he, she, it, we they, me, him, her, us, and them are all personal pronouns. Personal pronouns are the stunt doubles of grammar; they stand in for the people who star in our sentences.