|
Questions |
Answers |
| 1 |
Who is regarded as the Father of Modern Chemistry? |
Lavoisier |
| 2 |
The positively charged part at the centre of an atom is called as – |
Nucleus |
| 3 |
Constituents of the atomic nucleus are – |
Proton and neutron |
| 4 |
A single type of atom is found in – |
Native elements |
| 5 |
The atomic nucleus was discovered by – |
Rutherford |
| 6 |
In an atom, neutron was discovered by – |
Chadwick |
| 7 |
Higgs Boson is also known as – |
God Particles |
| 8 |
Much discussed ‘God Particle’ is – |
Higgs boson |
| 9 |
‘God particle is – |
Higgs Boson |
| 10 |
Which particle is free of charge? |
Neutron |
| 11 |
Which particle has zero charge? |
Neutrino |
| 12 |
The alpha particle carries two positive charges. Its mass is very nearly equal to that of – |
Nucleus of an atom of helium |
| 13 |
The Nucleus of Helium has – |
Two protons and two neutrons |
| 14 |
Which elements does not contain neutrons? |
Hydrogen |
| 15 |
In an atom, the order of filling up of the orbitals is governed by – |
Aufbau’s principle |
| 16 |
Regarding the atom of a chemical element, the magnetic quantum number refers to – |
Orientation |
| 17 |
The number of electrons and neutrons in an element is 18 and 20 respectively. Its mass number is – |
38 |
| 18 |
What is the mass number of an element, the atom of which contains two protons, two neutrons and two electrons? |
4 |
| 19 |
The number of neutrons in the nucleus of plutonium nuclide (94Pu242) is – |
148 |
| 20 |
The atoms, in which the number of protons is the same but the number of neutrons is different, is known as – |
Isotopes |
| 21 |
Isotopes are those atoms of the same element which have – |
Atomic mass is different but atomic number is same |
| 22 |
Isotopes is that nucleus of atomic nuclei in which – |
Number of protons is same but number of neutrons is different |
| 23 |
The neutronic group, in the following, is – |
6 C14, 7 N15, 8 O16 |
| 24 |
Radioactivity is measured by – |
Geiger Counter |
| 25 |
Radioactivity was discovered by – |
Becquerel |
