IAS me puccha gya sawal

The softness of group IA metals increase down the group with increasing atomic number.

A platinum resistance thermometer reads 0^0 when its resistance ia 80 Omega and 100^0 when its resistance is 90 Omega . Find the platinum scale at which the resistance ia 86 Omega.

Which of the following ia not a logical statement

For the statement "17 ia a real number or a positive integer", the "or" is

If A,B and C are angle of a triangle of a triangle ,the value of |{:(e^(2iA),e^(-iC),e^(-iB)),(e^(-iC),e^(2iB),e^(-iA)),(e^(-iB),e^(-iA),e^(2iC)):}| is (where i= sqrt(-1))

If A,B and C are angles of a triangle ABC then the value of |[4e^(2iA), e^(-iC), e^(-iB)] , [e^(-iC), 4e^(2iB), e^(-iA)] , [e^(-iB), e^(-iA), 4e^(2iC)]| is