Question
Protons were discovered
bySolution
In 1911 Ernest Rutherford who performed many experiments to explore radioactivity did an experiment in which he discovered that the atom must have a concentrated positive centre charge that contains most of the atom’s mass. He suggested that the nucleus contained a particle with a positive charge the proton.
Which of the answer figures illustrates the relationship between: Delhi, Sri Lanka, Asia?Â
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The diagram represents the number of students studying different subjects. What is the number of students who study both Hindi and Chemistry?