How to random a question without repetition

Make an array of the questions/lookup-keys/indices/etc. for the questions and then shuffle the array.
Look at my solution in: playing cards game (make Random 4 groups of Numbers in Main Group)[^] for shuffling.
Present the questions in the shuffled order.
Don't re-use a question, once presented.
Shuffle again for the next sequence of questions.

Well this might be what you want

--Create sample table
create table Questions(
quid int,
questions nvarchar(100)
)
--Sampel Insert Query
insert into Questions values(1,'MY 1st Questions')
insert into Questions values(2,'MY 2nd Questions')
insert into Questions values(3,'MY 3rd Questions')
insert into Questions values(4,'MY 4th Questions')
insert into Questions values(5,'MY 5th Questions')
insert into Questions values(6,'MY 6th Questions')
insert into Questions values(7,'MY 7th Questions')
insert into Questions values(8,'MY 8th Questions')
insert into Questions values(9,'MY 9th Questions')
insert into Questions values(10,'MY 10th Questions')

and the solution is

with cte as(
select Abs(checksum(newid())%10) as ORdid ,* from questions
)
select top 5 * from cte order by ordid

see the Example[^]

My solution is you can create a Stored procedure and pass the Start and ending row no.In your vb.net application you can store the start and end row no to be populated from db.
For example i have created one table called question.

--Create sample table
create table Questions(
quid int,
questions nvarchar(100)
)
--Sampel Insert Query
insert into Questions values(1,'MY 1st Questions')
insert into Questions values(2,'MY 2nd Questions')
insert into Questions values(3,'MY 3rd Questions')
insert into Questions values(4,'MY 4th Questions')
insert into Questions values(5,'MY 5th Questions')
insert into Questions values(6,'MY 6th Questions')
insert into Questions values(7,'MY 7th Questions')
insert into Questions values(8,'MY 8th Questions')
insert into Questions values(9,'MY 9th Questions')
insert into Questions values(10,'MY 10th Questions')

here is sample query to display the selected rows count

Declare @startno int,@endno int
set @startno=0
set @endno=3
SELECT *
FROM (
     SELECT *, ROW_NUMBER() OVER (ORDER BY quid) AS rownos
     FROM Questions
     ) AS q
WHERE q.rownos BETWEEN @startno AND @endno

the output will be like this.

1	MY 1st Questions	1
2	MY 2nd Questions	2
3	MY 3rd Questions	3

The same query to display next 3 records

Declare @startno int,@endno int
set @startno=4
set @endno=6
SELECT *
FROM (
     SELECT *, ROW_NUMBER() OVER (ORDER BY quid) AS rownos
     FROM Questions
     ) AS q
WHERE q.rownos BETWEEN @startno AND @endno

the output will be like this.

4	MY 4th Questions	4
5	MY 5th Questions	5
6	MY 6th Questions	6

In your vb.net application in button clicks you can increment and decrement the start and end row nos.