Unit Test: Metals & Non-metals | Science Class 10 PDF Download

Time: 1 hour

M.M. 30

Attempt all questions.

• Question numbers 1 to 5 carry 1 mark each.
• Question numbers 6 to 8 carry 2 marks each.
• Question numbers  9 to 11 carry 3 marks each.
• Question number 12 & 13 carry 5 marks each

Q1: Which of the following elements is a metal?  (1 Mark)
(a) Carbon (C)
(b) Oxygen (O)
(c) Chlorine (Cl)
(d) Sodium (Na)

Q2: The chemical formula of magnesium chloride is:  (1 Mark)
(a) MgCl₂
(b) Mg₂Cl
(c) MgCl
(d) MgCl₃

Q3: Which of the following oxides is amphoteric in nature?  (1 Mark)
(a) Carbon monoxide (CO)
(b) Sulphur dioxide (SO₂)
(c) Aluminium oxide (Al₂O₃)
(d) Nitrogen dioxide (NO₂)

Q4: Name one metal and one non-metal that exist as a liquid at room temperature.  (1 Mark)

Q5: Define the term "displacement reaction" in the context of metals and give an example.  (1 Mark)

Q6: Explain why metals are good conductors of electricity.  (2 marks)

Q7: Write the balanced chemical equation for the reaction between sulphuric acid (H₂SO₄) and calcium hydroxide (Ca(OH)₂).  (2 marks)

Q8: What happens when metals react with acids? Explain with an example.  (2 marks)

Q9: Explain the reactivity series of metals.  (3 marks)

Q10: Compare the physical properties of metals and non-metals.  (3 marks)

Q11: Give the reason why platinum, gold, and silver are used to make jewellery.  (3 marks)

Q12: Explain the corrosion of iron and its prevention methods.  (5 marks)

Q13: Discuss the occurrence of metals in nature, giving examples of native metals and ores.    (5 marks)