Free Test Atomic Structure – General...

Q1: Who proposed the planetary model of the atom?

A. J.J. Thomson B. Ernest Rutherford C. Niels Bohr D. James Chadwick

Q2: Which particle has a negative charge?

A. Proton B. Electron C. Neutron D. Nucleus

Q3: What is the charge on a neutron?

A. Positive B. Negative C. Neutral D. Depends on condition

Q4: What is the central part of an atom called?

A. Electron B. Proton C. Nucleus D. Shell

Q5: Which scientist discovered the electron?

A. Rutherford B. Bohr C. Dalton D. J.J. Thomson

Q6: Which particle has the least mass?

A. Proton B. Electron C. Neutron D. Nucleus

Q7: The number of protons in an atom is called the?

A. Atomic number B. Mass number C. Valency D. Isotope

Q8: Who gave the first modern atomic theory?

A. Bohr B. Dalton C. Rutherford D. Chadwick

Q9: Which of these is an isotope of hydrogen?

A. Deuterium B. Helium C. Lithium D. Carbon

Q10: Atomic mass is roughly equal to the sum of?

A. Protons and electrons B. Neutrons and electrons C. Protons and neutrons D. Only protons

Q11: Which scientist discovered the neutron?

A. Rutherford B. J.J. Thomson C. Bohr D. James Chadwick

Q12: Which element has atomic number 1?

A. Oxygen B. Hydrogen C. Helium D. Carbon

Q13: What is the maximum number of electrons in the first shell?

A. 2 B. 8 C. 4 D. 6

Q14: The mass number is equal to?

A. Number of protons only B. Number of electrons only C. Protons + Neutrons D. Protons + Electrons

Q15: Which of the following is not a subatomic particle?

A. Electron B. Proton C. Isotope D. Neutron

Q16: The region around the nucleus where electrons are found is called?

A. Orbit B. Shell C. Electron cloud D. All of the above

Q17: Which of the following is positively charged?

A. Electron B. Proton C. Neutron D. Isotope

Q18: Which subatomic particle defines the identity of an element?

A. Electron B. Proton C. Neutron D. All of them

Q19: What is the relative mass of a proton?

A. 1 B. 0 C. 0.0005 D. 2

Q20: Which scientist’s model of the atom is called the “plum pudding model”?

A. Bohr B. Rutherford C. Dalton D. J.J. Thomson

Q21: परमाणूचा ग्रहगती मॉडेल (planetary model) कोणाने प्रस्तावित केला?

A. J.J. Thomson B. Ernest Rutherford C. Niels Bohr D. James Chadwick

Q22: खालीलपैकी कोणत्या कणावर नकारात्मक विद्युत आवेश असतो?

A. प्रोटॉन B. इलेक्ट्रॉन C. न्यूट्रॉन D. न्यूक्लिअस

Q23: न्यूट्रॉनवर किती विद्युत आवेश असतो?

A. सकारात्मक B. नकारात्मक C. तटस्थ D. स्थितीनुसार बदलतो

Q24: परमाणूचे मध्य भाग कसे म्हणतात?

A. इलेक्ट्रॉन B. प्रोटॉन C. न्यूक्लिअस D. शेल

Q25: इलेक्ट्रॉनचा शोध कोणत्या शास्त्रज्ञाने लावला?