Verbal Reasoning - Mental Ability Questions

In the following question, correct the equation by interchanging the two signs.
6 ÷ 17 x 51 + 6 – 12 = – 4

In a certain code language, "REMINDER" is written as "SFNJMCDQ". How is "STANDARD" written in that code language?

Pointing to a photograph of a lady, Vishal says, "She is the sister­in­law of my grandfather's daughter". How is the lady in the photograph related to Vishal?

In a certain code language, "COPIOUS" is written as "2345389" and "GENEROUS" is written as "16760389". How is "PIGEON" written in that code language?

Every integer is a rational number.

Select the missing number in the given question?

The weights of 4 boxes are 20, 30, 50 and 70 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once?

Neha's is the only girl of her father and her father is the father­in­law of Pranav's brother. Pranav is Rajeev's nephew. How is Rajeev related to Neha?