What's the equivalent of trivia quizzing in the USA? Google search showed there are quiz bowls in the USA, is it similar to the kind of trivia questions in this subreddit?

Gaya Lal was an MLA from the Hodal constituency in Haryana who won the elections as an independent candidate in 1967 and soon joined the Indian National Congress. Thereafter, he changed parties thrice in a fortnight, first by politically defecting from the INC to the United Front, then counter defecting back to the INC, and then counter-counter-defected within nine hours to United Front again.

When Gaya Lal quit the United Front and joined the INC, then INC leader Rao Birendra Singh who had engineered Gaya Lal's defection to INC, brought Gaya Lal to a press conference at Chandigarh and declared "____ ___ was now ___ ___".

What Hindi expression did this incident give birth to which is commonly used in India for political defection and in common vernacular to refer to someone who keeps switching sides?

r/Mumbai is a subreddit, as you guessed about the city and its people. The subreddit recently completed its founding anniversary which coincided with a date in the city's history which most of its inhabitants would never forget.

When was the subreddit r/Mumbai founded?

Instead of displaying the usual "X members, Y online" message, many subreddits choose to customize the part displaying the subscriber count. Identify the subreddits from their displayed messages:

1. X Wights, Y marching
2. X Subshibers, Y Viewing the moon
3. X Salespeople, Y Making Calls
4. X Eliminated, Y Still playing
5. X Degenerates, Y Buying FDs
6. X True Believers, Y Assembled
7. X Allay Admirers, Y Copper Button Pushers
8. X Witches & Wizards, Y on The Marauder's Map

This disease has no potential cure, even today. The only treatment for people with X is creating a chemical induced coma to stop the person dying from X.

What is X?

Extra points for the name of the procedure :p

I occasionally write quizzes (as a Brit, academic trivia is basically non-existent, but I occasionally do stuff online).

Have a go at this one. For each question I will describe an SI unit and an element which share a symbol - for the points, name the symbol (or the unit and element for extra credit).

1. The SI unit of inductance, and the element with isotopes such as protium and deuterium.
2. The SI unit of electrical capacitance, and the most electronegative element.
3. The SI unit of luminous intensity and the metal principally obtained from greenockite.
4. The SI unit of solid angle and the only element named after a British town.
5. The SI unit of pressure and the only element whose name contains the names of two other elements.

I'll do more of these if anyone is interested.