91. Which of the following shows the masses of the three elementary particles in decreasing order?
92. What is the wavelength of visible spectrum?
93. Which of the following has a least penetrating power?
94. The isotope of uranium capable of sustaining chain reaction is
95. The age of most ancient geological formations is estimated by
96. Who suggested that most of the mass of the atom is located in the nucleus?
97. The dark lines in the solar spectrum are due to
98. In an atomic nucleus, neutrons and protons are held together by:
99. 'No two electrons in an atom can have the same set of four quantum numbers' is stated in
100. According to Avogadro's Hypothesis, the smallest particle of an element or a compound, that can exist independently, is called:
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