how to use "if" and"whether..or not"?
for example, what is difference for below sentences.
1) if the sample does match with the test protocol?
2) if the sample does match with the test protocol or not?
3) whether the sample does match with the test protocol or note?

Question

how to use "if" and"whether..or not"?
for example, what is difference for below sentences. 
1) if the sample does match with the test protocol? 
2) if the sample does match with the test protocol or not?
3) whether the sample does match with the test protocol or note?

Answer

None of these work as they are.

1) if the sample does match with the test protocol, then ..... Not a question.

2) Does the sample does match with the test protocol? -ok, after correction
2) Does the sample does match with the test protocol or not?  -ok, after correction, more assertive sounding

3) whether the sample does match with the test protocol or note? - also not a question.
Tell me whether the sample matches the test protocol. - an imperative.
.
If  then  - a conditional statement.

Find out whether A is true. - statement - enquiry about options.
Find out whether A is true or not. - statement

Answers · 1

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