Chemistry Class 9th
1. The particle that carries an electrical charge, positive or negative due to loss or gain of one or more electrons is called an _________
A. Atom
B. Ion
C. Molecular ion
D. Free radical
2. There are ______ types of ions.
A. Four
B. Two
C. Five
D. Three
3. Which are types of ions.
A. Cation
B. Anion
C. A and B both
D. None of these
4. The atom which loses electron(s) from its outer most shell, a net positive charge is appeared on that atom. The positively charged species is called _______
A. Anion
B. Molecular ion
C. Free radical
D. Cation
5. The atom which gains electron(s), a net negative charge is appeared on the atom. The positively charged species is called ______
A. Molecular ion
B. Cation
C. Anion
D. Free radical
6. Atom is the smallest particle of______
A. Molecular ion
B. Compound
C. Ion
D. An element
7. Ion is the smallest unit of an ionic______
A. Anion
B. Free radical
C. Atom
D. Compound
8. Just like atoms molecules also are electrically ______
A. Neutral particles
B. Positive particle
C. Negative particle
D. None of these
9. Molecular ions are also called _______
A. Compound
B. Radical
C. Anion
D. Free radicals
10. Molecular ion can be _______
A. Radical
B. Neutral particles
C. Cationic molecular ion
D. Free radical
11. _______ are atoms or group of atoms that has a single electron is an outer with no charge.
A. Molecular ion
B. Anion
C. Elements
D. Free radicals
12. Free radical is represented by _______
A. Putting a sign
B. Putting a dot over the species
C. A and B both
D. None of these
13. A free radical is reactive specie which _______
A. Exist independently
B. Does not exist independently
C. None of these
D. A and B both
14. _______ is the smallest particle of matter which can exist free in nature and may be composed of like or unlike atoms.
A. Molecule
B. Ion
C. Atom
D. Compound
15. ________ made up of only one atom.
A. Tri atomic molecule
B. Poly atomic molecule
C. Mono atomic molecule
D. Di atomic molecule
16. ________ consists of two atoms.
A. Atomic molecule
B. Mono atomic molecule
C. Tri atomic molecule
D. Poly atomic molecule
17. ________ consists of three atoms.
A. Poly atomic molecule
B. Atomic molecule
C. Mono atomic molecule
D. Tri atomic molecule
18. _______ made up of many atoms.
A. Mono atomic molecule
B. Atomic molecule
C. Poly atomic molecule
D. Tri atomic molecule
19. Some molecules are very big and large and they are called ______
A. Micromolecule
B. Macromolecules
C. Poly atomic molecule
D. Tri atomic molecule
20. ______ is a macromolecule found in blood.
A. Haemoglobin
B. Hydrogen
C. Oxygen
D. Nitrogen