Do You Know Rodney McKay? Trivia Quiz

Answer: Meredith Rodney McKay

It is first mentioned in "McKay and Mrs. Miller" by his sister Jeannie. However he doesn't like his first name Meredith as it sounds more like a girl name.

Answer: Col. Simmons

It happens during SG-1 episode "48 hours" when Teal'c is not rematerialized after going through the Stargate.

Answer: Area 51

This is revealed right in the end of "48 hours".

Answer: citruses

Even though lemons are used to make him react the way somebody else wants, in "48 hours" he mentions citrus allergy.

Answer: looking after Russian naquadah generator programme

Naquadah programme is his only possibility.

Answer: a concert pianist

He mention this in "Broken Ties" :
Rodney: "... what they call "piano fingers," so slim, nimble, you know? Really no surprise my family signed me up for lessons. My first teacher, of course, hailed me as a natural."

Just to add:
Rodney: "I had a not-so-comfortable childhood. My parents hated each other, blamed me. Music... was my salvation. It had this... perfect order for me."

Answer: Both of these

Major John Sheppard stands in front of him and deliberately pushes him backwards over the balcony. Rodney plunges to the floor of the Gateroom about thirty feet below.

John: "Did you see that?!"

Elizabeth: "Yes! What the ...?"

As they all look over the balcony, Rodney jumps up from the floor, raising his hands and smiling.

Rodney: "I'm fine!"

He has a small device on his chest. It is glowing green. John grins down at him and heads for the stairs. Elizabeth and Grodin do likewise and they all run down to join Rodney.

Rodney: "Look, Beckett's gene therapy worked. I was able to activate this. It's a, uh, personal shield: acts like a protective skin; and it must have inertial dampening properties too, because I didn't feel a thing."

...

Elizabeth: "I'm still trying to understand how you thought it was a good idea to test this device by having someone throw you off a balcony."

Rodney (smiling): "Oh, believe me, that's not the first thing we tried."

John grins and turns to Elizabeth.

John(proudly): "I shot him."

Elizabeth stares at him incredulously. John's smile fades a little.

John: "In the leg!"

Answer: He prefers lethal injection, although he has a certain fondness for the electric chair

He mentions this in "Condemned" when they sre speaking about capital punishment of the Olesians:

John: "There is, however, the minor moral hiccup of their form of capital punishment."

Elizabeth: "I'm sorry?"

Rodney: "They have an island. It's their own version of Alcatraz where they send their worst criminals."

John: "And the Gate is on the island, so ..."

Elizabeth: "... so the Wraith feed on the prisoners."

John: "Yep."

Elizabeth: "Talk about cruel and unusual punishment."

Rodney: "I prefer lethal injection, although I do have a certain fondness for the electric chair. Call me romantic."

Answer: Margaret Thatcher

Rodney doesn't like how the Olesians consider the case so he speaks to John:

Rodney: Seriously, am I the only one creeped out by that guy?

John: They're politicians, Rodney -- they're all creepy.

Rodney: Margaret Thatcher wasn't creepy. OK -- well, maybe a little. She actually resembled an aunt of mine -- same hairstyle, facial structure, only my aunt was much taller, and remarkably hirsute. Oddest thing: she had to shave twice a day."

Answer: Madison

Jeannie is his sister.
Elizabeth is the leader of Atlantis expedition.
Betty is just a name that John uses to show Rodney that he does remember his niece's name in "The Shrine".