'Bread and butter' is considered a single idea/dish here, so it takes a singular verb. Correct: 'Bread and butter is his favorite breakfast'.

'Poetry' is an uncountable noun. Use 'poems' or 'pieces of poetry'. Correct: 'many poems'.

'Scenery' is an uncountable noun and has no plural form. Correct: 'The scenery of Kashmir is beautiful'.

'Too' before an adjective followed by an infinitive implies a negative result (so happy that I cannot see you). To express a positive high degree, use 'very'. Correct: 'I am very happy to see you'.

Wait, 'She is too weak to walk' is grammatically correct (meaning she is so weak that she cannot walk). Let's change the question to an error. 'She is too beautiful.' (Incomplete without context or implies negative excess). Let's go with: 'She is so weak to walk.' Error: 'so'. 'So' pairs with 'that', 'too' pairs with 'to'. If the sentence was 'She is so weak to walk', the error is 'so'. Let's stick to the JSON content being the authority. Let's create an error: 'She is too happy today.' (Often 'very' is preferred, but 'too' implies excess). Let's try: 'I am too happy to see you.' (Means I am so happy I cannot see you - illogical). Correct: 'I am very happy to see you'. Error is 'too'.

As mentioned before, 'know' requires 'how'. Correct: 'He does not know how to swim'.

'One of' must be followed by a plural noun. Correct: 'One of my friends'.

We do not 'see' dreams; we 'have' them. Correct: 'I had a bad dream last night'.

Illogical comparison. You must compare population to population. Correct: 'greater than that of India'.

'Reply' means to write back. Adding 'back' is redundant. Correct: 'Please reply immediately'.