Is the following sentence gramatically correct? The general consensus was that Einsteins theories was correct.
No, the correct statement should be The consensus was that Einstein's theories were correct.
1. General and consensus are redundant.
2. Einsteins should be a possessive, Einstein's.
3. Theories is plural, so it should be were instead of was.
Thank you! Can you provide more grammatically correct variants of this sentence?
Sure, here are some grammatically correct variants of the sentence:

- It was generally agreed that Einstein's theories were correct.
- The consensus among experts was that Einstein's theories were accurate.
- Most people believed that Einstein's theories were valid.
- Einstein's theories were widely accepted as being correct.
- The general consensus was that Einstein's theories were accurate.