The ratio of `PZ:ZR` is -

Points X and Y are taken on the sides QR and RS,respectively of a parallelogram PQRS,so that QX=4XR and RY=4YS The line XY cuts the line PR at Z Find the ratio PZ: ZR

Points X and Y are taken on the sides QR and RS, respectively of a parallelogram PQRS, so that QX=4XR and RY=4YS The line XY cuts the line PR at Z Find the ratio PZ: ZR

Assertion (A) Separation of Zr and Hf is difficult. Reason (R ) Because Zr and Hf lie in the same group of the Periodic Table.

Assertion (A) Separation of Zr and Hf is difficult. Reason (R ) Because Zr and Hf lie in the same group of the Periodic Table.

Assertion (A) : Separation of Zr and Hf is difficult. Reason (R ) : Zr and Hf lies in the same group of the periodic table.

Assertion : Separation of Zr and Hf is difficult. Reason : Because Zr and Hf lie in the same group of the periodic table.