Which of the following are examples of empty set? `{x : x^2-2=0\ a n d\ x` is rational`}`

Which of the following are examples of empty set? {x:x^(2)-2=0 and x is rational }

Which one of the following is an example of non-empty set ?

Which of the following are examples of empty set? {x : x is a natural number, x 12}

Which of the following are examples of empty set? {x:x is a natural number,x 12}

Which of the following sets are empty sets? i) A={ x: x^2-3=0 . and x is rational } ii) B={x: x is an even prime number } iii) C={x: 4 lt x lt 5, x in N} iv) D={x: x^2=25 and 'x' is an odd integer.}

Which of the following are examples of empty set? {x : x is a point common to any two parallel lines } .

Which of the following sets are empty sets ? {x : x^(2) -2=0, x " is a rational number "}

Which of the following are examples of empty set? {x:x is a point common to may two parallel lines }.

Which of the following are empty sets? why : B = {x|x^2=0}

Which of the following sets are empty sets ? {x : x in R, x^(2)+2=0}