Questions
Question 1 Multiple Choice (Single Answer)
Which of the following pure substances is a compound?
- Water
- Hydrogen
- Iron
- Mercury
Question 2 Multiple Choice (Single Answer)
Which of the following is an element?
- Hydrogen chloride
- Carbon dioxide
- Helium
- Water
Question 3 Multiple Choice (Single Answer)
When two or more elements join together chemically,
- a compound is formed
- a heterogeneous mixture is formed
- a homogeneous mixture is formed
- a colloid is formed
Question 4 Multiple Choice (Single Answer)
Which of the following substances has the maximum space between its particles at room temperature?
- Water
- Oxygen
- Stone
- Milk
Question 5 Multiple Choice (Single Answer)
Which of the following is a characteristic of a compound?
- Elements of a compound have the same composition and properties.
- Elements in a compound vary in composition.
- Properties of a compound differ from its constituent elements.
- Separation of a compound into its elements is not possible chemically.
Question 6 Multiple Choice (Single Answer)
Which of the following will NOT break down compounds?
- Filtering
- Electric current
- Chemical change
- None of these
Question 7 Multiple Choice (Single Answer)
Which of the following substances is/are impure?
(i) Mixture
(ii) Compounds
(iii) Elements
- Only (i)
- Only (ii)
- Both (ii) and (iii)
- Both (i) and (ii)
Question 8 Multiple Choice (Single Answer)
Elements _______ be broken into simpler substances by _________ reactions.
- can, physical
- can, chemical
- cannot, chemical
- can, physical and chemical
Question 9 Multiple Choice (Single Answer)
Which of the following is the smallest particle of matter?
- Mixture
- Compound
- Atom
- None of these
Question 10 Multiple Choice (Single Answer)
Which of the following examples of matter will neither have definite shape nor definite volume?
- Spoon
- Sugar
- Salt
- Oxygen