Will the unused credit card have an effect on the credit score?

[Shrikant_Inturi]

I have never taken any loan from any bank but I have around 6-7 Credit Cards. Out of those CC, I am using only two mostly and remaining are lying in my valet. I am now looking for a home loan, so I have a query
1- Do I need to surrender the unused credit card?

2- Will the unused credit card have an effect on the credit score?

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