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A moderator is used in nuclear reactors in order to 1 Increase the number of neutrons 2 Decrease the number of neutrons 3 Slow down the speed of neutrons 4 Accelerate the neutrons
1 3215According to Dalton’s atomic theory, the smallest particle which can exist independently is 1 An atom 2 A molecule 3 A cation 4 An anion
1 8124The dark lines in the solar spectrum are due to 1 Absorption of corresponding wavelengths by the prism used in he spectrograph 2 Destructive interference between waves of certain definite wavelengths 3 Absorption of corresponding wavelengths by the outer layers of the sun 4 None of these
1 6905The correct sequence of various regions I absorption spectrum is 1 Visible, ultraviolet, microwave, infra red 2 Infra red, gamma rays, ultraviolet, microwave 3 Ultra violet, visible, infra red, microwave 4 None of these
CPSE,
1 5713‘No two electrons in an atom can have the same set of four quantum numbers’ is 1 Bohr’s law 2 Aufbau principle 3 Newton’s law 4 Pauli’s exclusion principle
1 7384Enriched uranium used in a nuclear reactor is 1 Uranium freed of all impurities 2 Uranium treated with radiation 3 Uranium alloyed with aluminum 4 Uranium with a high percentage of a particular isotope
1 4062The main important feature of neutron bomb is that when it is dropped on a city, it would damage 1 Both the living organisms and buildings 2 The buildings but not the living organisms 3 The living organisms but spare buildings 4 None of these
GTY, Indian Railways, Option 3, RRB, RRC Railway Recruitment Cell,
3 11931Which of the following shows the masses of three elementary particles in decreasing order? 1 Mesons, Baryons, Leptons 2 Leptons, Baryons, Mesons 3 Baryons, Mesons, Leptons 4 Leptons, Mesons, Baryons
1 5269The neutral atom’s two isotopes differ in the number of 1 Electron shells 2 Protons 3 Valence electrons 4 Neutrons
1 5306Optic fibers are mainly used for which of the following? 1 Communication 2 Weaving 3 Musical instruments 4 Eye surgery
1 4161Gypsum is added to cement clinker to 1 Increase the tensile strength of cement 2 Bind the particles of calcium silicate 3 Decrease the rate of setting of cement 4 Facilitate the formation of colloidal gel
3 17215Post New General Science Questions
When was the second and third experimental explosion conducted?
Which scientist made detailed study on novae?
we know in mathematics that a matrix is an arrangement (array) of different elements , memebers . Then, how does the movie "Matrix" relate with this concept. In movie "Matrix" we have seen that it shown a war between machines & humans. And we know to operate machines we need code like 0 1 & 1 0 . How ? explain ?
Explain how you can integrate Life skills in Science Teaching
When was the first american rocket launched?
what are advantages of excess populatoin?
What is one light second?
what is defination of conductivity? How much conductivity of water ? what is effect when conductity of water low or high?
When did the most luminous nova appear?
What is one light year?
BARC CHIF
What is the work of a patent engineer? Does the experience in working as patent engineer helps in finding a job in a refinery?
Who propounded the signs of the zodiac?
What is light year?
In which year was the meteorology department founded?
