Short answer is that we don't know for sure. That should not, however, be taken as a reason to doubt the events recorded in the Torah. Background:
In the Exodus, Moses brought the Israelites out of the Egyptian slavery under the guidance of God, after God brought plagues upon the Egyptians (Exodus ch.1-12).
After the Israelites left, Egypt was in turmoil for decades. Though Israel was later harassed (Judges ch.3,6 and 10) by its smaller neighbors (Ammon, Moab, Midian), not a peep was heard from Egypt for four hundred years.
Egypt's turmoil is also borne out by the Ipuwer papyri (Professor John van Seters, Journal of Egyptian Archaeology no. 50). The plagues were also described by ancient historians, including Herodotus and Diodorus. The Exodus is mentioned by Strabo, Berosus, Artapanus, Numenius, Justin, and Tacitus.
See also:
Scholars and historians are not sure but their best guess is that he was either Amenhotep II or Raamses II.
Ramesses II the Great. He was the ruler usually associated with Moses.
The ten plagues (Exodus ch.7-12).
In the majority of the Plagues, Pharaoh hardened his own heart. Only in a few of the later plagues did God harden Pharaoh's heart. These later cases were a punishment for Pharaoh having hardened his own heart while he still had free will.
God brought many plagues upon Pharaoh's country (Exodus ch.7-12).
That is not stated. What is stated, is how Pharaoh and his advisers reacted to the plagues. In the majority of the plagues, Pharaoh hardened his own heart; and in the first two, even his advisers did the same. Only later did their attitude soften. See Exodus chapters 7-12.
God sent ten plagues upon Egypt (Exodus ch.7-12), not only the plague of frogs. The purpose of the plagues was to impress upon Pharaoh and the Egyptians that God is the Boss (Exodus 7:5) and that the Israelites must be freed in order to serve Him (Exodus 7:26).The K'li Yakar commentary writes that, since the Egyptians worshiped the Nile, God symbolically trounced their false belief by making the Nile a source of anguish in the first two plagues. Also, since Pharaoh refused to recognize the voice of God (Exodus 5:2), He forced Pharaoh to listen to the constant croaking of the frogs (and later the unnaturally loud thunder during the hailstorms (Exodus 9:28) (K'li Yakar).
In the biblical story, God used a series of plagues to demonstrate his power and persuade the Pharaoh to release the Israelites. After witnessing the devastating plagues firsthand, the Pharaoh eventually relented and allowed the Israelites to leave Egypt.
The plagues which God brought upon Egypt (Exodus ch.7-12).
At first, he made a conscious decision to refuse to permit the freeing of the Israelites. In a few of the later plagues, God Himself hardened Pharaoh's heart, for a reason given in Exodus ch.10.
Yes, Pharaoh died along with the entire Egyptian army.
Exodus
God made pharaoh the 10 plagues.
No. Tutankhamen is from nearly 100 years prior to the supposed date of the Exodus. The Pharaoh commonly cited is Ramses II.