Question: As Rameses is getting dressed by his servants, Nefretiri stops one servant and takes a sword from him. The shot then cuts to Rameses getting dressed and then Nefretiri comes to give him the sword. What exactly did she do with it: did she stab her dead son (who is placed on that statue), or did she do something else?
Answer: She gave the sword to Ramses and told him to bring it back with Moses' blood on it.
Answer: She didn't do anything with it. She took the sword so she could help dress her husband herself.
Question: Can someone explain how all the special effects were done, such as the electronic blasters rays, and the sound effects? As the film was from 1956 there were no electronic keyboards then and the sounds are very futuristic.
Question: How is it that Rodan flew supersonic speeds but you only see him flap his wings to take off? Also how did he leave a vapor trail at high altitude?
Answer: The movie was made in the 1950s when special effects barely existed and were primitive at best. This is also a Japanese-made movie, and their film industry, at that time, was far less sophisticated than Western movies. Audiences then were expected to employ a "suspension of disbelief" while watching a Sci-fi movie, accepting that what they were seeing was implausible or crudely done, but it told the story. Audiences know that Rodan could not have taken off at supersonic speeds merely by flapping its wings or left a vapor trail at high altitude, but just accept that it adds to the overall illusion of what is supposed to be happening.
Answer: I have always thought she stabbed her dead son. It's obvious she does something with it other than just give it to Rameses.
She doesn't do anything other than give him the sword. She's trying to dramatically convince Ramses to kill Moses. In countless stories, one character will tell another character to kill someone while handing them a weapon.