Which of the following pairs is not correctly matched

Intensity of gravitational field of earth is maximum at –

A liquid rises in a capillary tube due to:

During electrolysis the reaction at anode is? 

Biogas which is used for cooking purpose is a mixture of which of the following two components?

Which of the following statement is correct?

I. The property of metals by which they can be beaten into thin sheets is called ductility.

The communication between the central nervous system and the other parts of the body is facilitated by 

Study the following questions carefully and choose the right answer:

The main thinking part of the brain is the _______?

Which of the following is true regarding the periodic table?

The seed multiplication ratio of rapeseed, red gram, hybrid maize, sorghum and jute is: