The objection identifies a real weakness in a popular apologetic argument, but it does not refute Quran 10:92. The verse promises that Pharaoh's body would be made a sign; it does not identify him with Ramesses II, describe modern mummification, or state that his death must be detectable as drowning.
Why the objection has force
The argument is often presented too confidently: the Exodus Pharaoh is identified with a particular Egyptian king, his mummy is found, and its survival is treated as a precise scientific miracle. Yet historians do not agree on the identity of the Pharaoh of the Exodus. Ramesses II is only one proposed candidate, and his mummy does not establish death by drowning. More generally, Egyptian embalming preserved many royal bodies, so the mere existence of a mummy is not, by itself, extraordinary.
That criticism is fair. If someone claims that the Quran predicted the discovery of one specific mummy, or that modern medical examination proves the king drowned, the evidence does not warrant that confidence. Those are additional claims, not the plain wording of the verse.
What the verse actually says
Today We will save your body so that you may be a sign for those after you. And surely most people are heedless of Our signs.
Quran 10:92
The Arabic refers to Pharaoh's badan, his body. It does not say that the body would remain perfectly intact for thousands of years, that it would be found in a museum, or that its cause of death would be readable from the remains. The surrounding passage says that Pharaoh professed faith only when drowning had overtaken him, and that this declaration was rejected.
Classical commentators such as al-Tabari and Ibn Kathir understood the verse as saying that Pharaoh's corpse was brought out and made visible, so that the Israelites would know that he had truly died and that later people could take warning from his fate. On that reading, the sign is the public preservation and recognition of the corpse after the destruction of its powerful owner. It need not depend on a modern archaeological discovery.
What archaeology can and cannot establish
Archaeology cannot currently identify the Exodus Pharaoh with certainty, and no existing mummy can responsibly be presented as a demonstrated fulfilment of every detail in the popular claim. Nor does the Quran require that identification. Conversely, the absence of clear drowning injuries in a candidate mummy does not disprove the verse: drowning often leaves no distinctive skeletal signature, the candidate may be wrong, and the verse does not say the body would retain such evidence.
Thus the strongest case is modest. The Quran describes a preserved, recognizable corpse as a sign, and Egyptian royal remains provide a possible historical illustration, not a conclusive identification. The verse remains a theological claim about Pharaoh's fate and a warning to later generations; it should not be turned into an overconfident claim that a particular mummy has been scientifically proven to be that Pharaoh.