Question : Which among the following will be a negative ion?

Option 1: If it has more electron than protons

Option 2: If it has more electrons than neutrons

Option 3: If it has more protons than electrons

Option 4: If it has more protons than neutrons

Question : Electrons in the highest energy level of an atom are called ________.

Option 1: Valence protons

Option 2: Orbital protons

Option 3: Valence electrons

Option 4: Orbital electrons

Question : An electron microscope gives higher magnifications than an optical microscope because:

Option 1: The velocity of electrons is smaller than that of light.

Option 2: The wavelength of electrons is smaller as compared to the wavelength of visible light.

Option 3: The electrons have more energy than the light particulars.

Option 4: The electron microscope uses more powerful lenses.

Question : What is speed?

Option 1: It is the distance covered by an object in a unit of time

Option 2: It is the velocity of an object per unit time

Option 3: It is the force applied on covering a unit distance

Option 4: It is the acceleration of an object per unit time

Question : An atom of an element has an atomic number of 17 and a mass of 36. The number of neutrons in its nucleus is

Option 1: 17

Option 2: 19

Option 3: 36

Option 4: 53