Here is two way to resolve your problem .
1. You can use the EXCEPT or INTERSECT set operators for this. for example
SELECT id, name FROM master.dbo.test
EXCEPT
SELECT id, name FROM test.dbo.testings
2. Use of Information Schema
select *
FROM questions_table
WHERE questioncolumn IN
(
select column_name
from information_schema.columns where table_name='dynamic_table'
);