GPSC Gujarat Science & Technology — practice questions
28 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice GPSC Gujarat Science & Technology in the app →The Sanskrit text in which Acharya Kanada's atomic ideas are recorded is:The Greek word *atomos*, from which *atom* is derived, means:In which year did John Dalton propose his atomic theory based on scientific experiments?According to Dalton's atomic theory (1808):Who discovered the **electron** and in which year?In a cathode ray tube, the rays move from:Cathode rays are streams of:The charge of an electron, by convention, is:The actual magnitude of the charge of an electron in coulombs is approximately:J. J. Thomson received the Nobel Prize in Physics in:Thomson's model of the atom is also called the:In the watermelon analogy of Thomson's atomic model:The famous **gold foil experiment** was conducted in 1911 by:In the gold foil experiment, the particles aimed at the gold foil were:An alpha particle is identical to a nucleus of:Most alpha particles in the gold foil experiment:From the gold foil experiment, Rutherford concluded that the positive charge of an atom is:According to Rutherford's planetary model, electrons:The approximate diameter of an atom is:The approximate diameter of the nucleus is:If an atom were the size of a cricket ground (~100 m), the nucleus would be roughly the size of:Which scientific phenomenon, discovered in the late 19th century, demonstrated that atoms are NOT indivisible?J. J. Thomson worked at which famous laboratory in Cambridge?Why is Rutherford's atomic model called the **planetary model**?In Rutherford's atomic model, most of the mass of the atom is concentrated in:An atom is electrically neutral because:In Thomson's model, the colour of an atom (as shown in diagrams):The deflection of alpha particles from their straight path in the gold foil experiment is technically called: