List of top English Questions on Error Spotting - Subject Verb Agreement asked in SNAP

Spot the error in the following sentence.

Neither the mathematics department nor the economics department at the State University require that the students must write a thesis to be awarded a Master's Degree.

Identify if the sentence has an error in it.
The CEO, together with his managers, have decided to organize a meeting.

Select the word / words that have to be removed / replaced in order to make the sentence grammatically correct.

The tiles were secure fastened and so very few of them were dislodged when the shuttle re-entered the earth's atmosphere.

Spot the error in the following sentence.

The Pickerel frog should be avoided as the secretions from their skin are lethal to animals and irritating to humans.