20 Important MCQs on topic "Matter and it's Nature"
Here we will learn 100 MCQs on the topic "Matter and it's Nature" designed for different competitive exams like RRB NTPC, SSC CGL, SSC CHSL, SSC GD, WBCS, Clerkship and Miscellaneous etc. along with the correct answers.
Subject: Chemical Science
Topic: Matter and it's Nature
Topic: Matter and it's Nature
We will distribute these 100 MCQs in five parts. Out of five parts of 100 MCQs on the topic "Matter and it's Nature" this is Part: 01.
[Part: 01]
#1. What is the smallest unit of matter?
- a) Atom
- b) Molecule
- c) Electron
- d) Proton
Answer: a) Atom
#2. What is the physical state of matter that has a definite shape and definite volume?
- a) Solid
- b) Liquid
- c) Gas
- d) Plasma
Answer: a) Solid
#3. Which of the following is an example of a homogenous mixture?
- a) Air
- b) Sand and water
- c) Salt and pepper
- d) Oil and water
Answer: a) Air
#4. Which of the following is a chemical change?
- a) Melting of ice
- b) Dissolving sugar in water
- c) Rusting of iron
- d) Breaking glass
Answer: c) Rusting of iron
#5. What is the main characteristic of gases?
- a) Definite shape and volume
- b) Definite volume but no definite shape
- c) No definite shape and no definite volume
- d) Definite shape but no definite volume
Answer: c) No definite shape and no definite volume
#6. Who proposed the atomic theory of matter?
- a) J.J. Thomson
- b) John Dalton
- c) Rutherford
- d) Neils Bohr
Answer: b) John Dalton
#7. In which state of matter are particles most closely packed?
- a) Solid
- b) Liquid
- c) Gas
- d) Plasma
Answer: a) Solid
#8. Which of the following is not a property of matter?
- a) Mass
- b) Volume
- c) Conductivity
- d) Hardness
Answer: c) Conductivity
9. Which of the following is an example of a compound?
- a) Oxygen
- b) Nitrogen
- c) Water
- d) Carbon
Answer: c) Water
10. A mixture of sand and iron fillings can be separated by:
- a) Filtration
- b) Using a magnet
- c) Evaporation
- d) Distillation
Answer: b) Using a magnet
11. The atomic number of an element is determined by:
- a) The number of protons
- b) The number of neutrons
- c) The number of electrons
- d) The mass number
Answer: a) The number of protons
12. Which of the following is an example of an element?
- a) Water
- b) Sodium chloride
- c) Oxygen
- d) Alcohol
Answer: c) Oxygen
13. What is the chemical symbol for gold?
- a) Au
- b) Ag
- c) Go
- d) Ge
Answer: a) Au
14. Which of the following states of matter has the highest kinetic energy?
- a) Solid
- b) Liquid
- c) Gas
- d) Plasma
Answer: d) Plasma
15. What is the process called when a solid changes directly into gas?
- a) Condensation
- b) Melting
- c) Sublimation
- d) Evaporation
Answer: c) Sublimation
16. The smallest particle of a compound that retains the properties of the compound is called:
- a) Atom
- b) Ion
- c) Molecule
- d) Electron
Answer: c) Molecule
17. Which of the following is a heterogeneous mixture?
- a) Salt in water
- b) Sugar in tea
- c) Oil in water
- d) Alcohol in water
Answer: c) Oil in water
18. The SI unit of mass is:
- a) Kilogram
- b) Gram
- c) Milligram
- d) Tonne
Answer: a) Kilogram
19. What type of bond is formed between sodium and chlorine in sodium chloride?
- a) Covalent
- b) Ionic
- c) Metallic
- d) Hydrogen
Answer: b) Ionic
20. What is the chemical formula of methane?
- a) CH₄
- b) CO₂
- c) C₂H₆
- d) H₂O
Answer: a) CH₄