Building a Math Question bank and Web Application for reading them

Question

Idea is to design a Question bank with answers and solutions for math and science subjects, for a web application (Designed in Laravel(php). Typesetting of questions is done in LaTeX.

\documentclass{memoir}

\usepackage{amsthm,amsfonts,amssymb,amsmath}
\usepackage{fourier}

\theoremstyle{definition}
\newtheorem{ex}{Exercise}

\usepackage{answers}
\Newassociation{sol}{Solution}{ans}
\renewcommand{\Solutionlabel}[1]{\textbf{Answer #1.}}


\begin{document}

    \chapter{Exercises}

    \Opensolutionfile{ans}[ans1]
    \begin{ex}
        This is a question.
        \begin{sol}
            This is an answer.
        \end{sol}
    \end{ex}


    \begin{ex}
        This is second Question
        \begin{sol}
            This is second answer
        \end{sol}
    \end{ex}



    \Closesolutionfile{ans}
    \section{Answer}
    \input{ans1}
\end{document}

Question 1. Now I am able to pull out questions with their answers wrapped in {ex} environment into mysql table. Laravel web application can call these questions and present them to a view. Is there any way to show them in HTML.

Question 2. Generally a big math Book typeset in LaTeX does contain so many style conventions and abbreviations stacked up in an .sty file. But how to enclose all of them when such {ex} snippets alone are sent to html view.

I tried pdf2htmlEX by coolwanglu, it was excellent in document translation from pdf to html. But my main requirement is randomly popping a question from mysql db, so this way is not useful.

Can somebody suggest me any workflow how to achieve this.