1. Which among the following is present inside the nucleus of an atom?
2. What is the mass of 4 Moles of aluminium atoms?
3. Barium loses………. electrons to achieve noble gas electronic configuration?
4. Using which of the following processes can one separate a solute from its solution?
5. Mass of a hydrogen atom is how many times the mass of an electron?
6. What is the atomic number of chromium?
7. Which of the following is an example of colloidal solution of liquid in solid?
8. An emulsion is a colloidal solution of
9. How many maximum electrons can be present in third or m-subs heel?
10. The rate of vaporization increase by decreasing which of the following factor?
11. Which among the following is false about alpha particles?
12. Which of the following changes CANNOT be reversed?
13. In 1904 who discovered plum-pudding model of atom, according to which positive charge is spread over a sphere and electrons are embedded to the positive charge as resins are scattered in plum-pudding?
14. Fe has 26 protons in its nucleus. What is the number of electrons in Fe²⁺ (iron II) ion?
15. Protium, deuterium and tritium are the naturally occurring isotopes of:
16. When did Rutherford published results of gold -foil experiment through which it was noticed that scattering becomes due to presence of rigid core inside nude us of the atom?
17. How many moles are present in 36 gm of water?
18. Which of the following is NOT positively charged?
19. Which of the following is NOT advisable as a process of separation of components of a mixture?
20. Atoms of different elements with different atomic numbers, having same mass number is known as ––––.
21. What is the elemental percentage composition of H₂SO₃?
22. One mole of an ideal gas occupies volume of ............ litre at 237 k temperature and 1 atm pressure.
23. What is the atomic number of nitrogen?
24. The existence of isotopes was first suggested in 1913 by the radiochemist .........
25. Who discovered the neutron and its properties?
26. Which of the following substance is insoluble in water?
27. The first electron shell which is the nearest to the nucleus never holds more than 'n' electrons, where 'n' is equal to:
28. Which of the following is a heterogeneous mixture?
29. Which of the following statement is not correct with respect to a mixture?
30. What is approximate value of atomic mass of hydrogen?
31. Which of the following elements is a metalloid?
32. One mole of an ideal gas occupies a volume of ______ litre at 273 K and 1 atm pressure.
33. In which state of matter kinetic energy of molecules becomes more than force of attraction between them, due to which they lie for apart and become in free motion?
34. Who proposed that all matters were composed of atoms, that are indivisible and indestructible building blocks?
35. All isotopes of the same element have --------?
36. The mass of proton and mass of ………is same.
37. Neutrons are present in the nucleus of all atoms EXCEPT in those of _____.
38. What is the molecular mass of nitric acid?
39. Which of the following is a polar molecule?
40. In any shell the difference between two electron to be done by ?
41. Which of the following is not an isotope of the element hydrogen?
42. Atoms of which of the following elements has more than one electron in its outermost shell?
43. The antiparticle of an electron is ?
44. Which of the following scientists discovered the electron in 1897?
45. In 1808 which of the following proposed that the combination of two or more different elements form compounds?
46. Which of the following can be defined as the smallest particle of an element that is capable of an independent existence?
47. Name the law in Physics which states that equal volume of all gases under the same conditions of temperature and pressure contain equal number of molecules.
48. According to Dalton's atomic theory atoms are combined in a certain small whole number ratio to produce ...............
49. Which of the following process changes liquids directly into gases (vapour)?
50. How many types of isotopes does Scandium have?
