General Science Questions

• Mesons are found in
• Which of the following is used as a moderator in nuclear reactor?
• Nuclear fission is caused by the impact of
• Atoms of an element differ from those of all other elements in
• Which radioactive pollutant has recently drawn to public, due to its occurrence in the building material?
• Which among the following is a positively charged particle emitted by a radioactive element?
• The wavelength of X-rays is of the order of
• 'No two electrons in an atom can have the same set of four quantum numbers' is
• Which of the following shows the masses of the three elementary particles in decreasing order?
• According to Avogadro's Hypothesis, the smallest particle of an element or a compound, that can exist independently, is called ____ .
• What is the wavelength of visible spectrum?
• In an atomic nucleus, neutrons and protons are held together by
• The isotope of uranium capable of sustaining chain reaction is
• The dark lines in the solar spectrum are due to
• Atoms are composed of
• Who suggested that most of the mass of the atom is located in the nucleus?
• Which of the following has a least penetrating power?
• The age of most ancient geological formations is estimated by
• In an atomic explosion, enormous energy is released which is due to
• How many colours the sunlight spectrum has?