The phrase "a vast array of questions" is correct and usable in written English.
You can use it when referring to a large and diverse set of inquiries or topics.
Example: "During the seminar, the participants posed a vast array of questions about the new policy changes."
Alternatives: "a wide range of questions" or "a large number of questions."
As the third month of military operations begins, the NATO-led efforts to protect civilians in Libya are subject to a vast array of questions.
These insights are gleaned from the annual Gallup World Poll, which poses a vast array of questions to respondents in over 140 countries; the new book reflects Gallup's own surveys over the past seven years, plus other organisations' polls.
Answers already has a vast array of questions and answers on the site for you to search on, due to the fact it was originally launched as a beta service in April this year.
The analysis, although only of a preliminary and exploratory nature, raises a vast array of new questions that should facilitate deeper probe into the co-evolution of psychosocial, physical and metabolic functions.
The study of the interactions of animals with their beneficial or mutualistic bacterial partners is a frontier field with a vast array of largely unanswered questions.
He has also created wild, immersive installations that employ theater backdrops and set pieces in ways that suck the viewer into a vast array of images that question issues of extreme religiosity, desire and consumerism.
This international touring exhibition is huge, not only in scale, scope and conception but also as a vast array of important statements and questions.
"It's just a vast array of people who all come at this single question of how to treat disease, and we are all moving toward one goal".
Chinese Internet users have questioned how the facility — which contained a vast array of harmful substances, including cyanide — existed in proximity to several major residential developments and infrastructure projects.
With a vast array of sophisticated instruments available, the igneous petrologist is able to answer many fundamental questions.
A vast array of studies analyzes metabolites and their interrelations to seek explanations for various biological questions, and numerous genome-scale metabolic networks have been assembled to serve for this purpose.
