Find the error. My father/is going/to the

Device used to convert sound into electrical signals:

Which vitamin helps in improving night vision?

Who among the following developed the technology of under-ground nuclear explosion?

Intensity of gravitational field of earth is maximum at –

What is the industrial name of Epsum?

The part of leaf by which it is attached to the stem is called ______.

Which of the following is true regarding the periodic table?

Which of the following is a water-soluble vitamin?

Ohm’s law obeyed in -

Which one of the following physical quantities is the same for molecules of all gases at a given temperature?