Metals Non metals and Carbon Compounds (Class 10)

What this worksheet covers

This is an eighteen-question practice worksheet on metals, non-metals and carbon compounds for Class 10, written to the pattern of the SOF National Science Olympiad (NSO). It carries 24 marks and is designed to be attempted in 45 minutes, split across three sections — Scientific Reasoning, Applying What You Know and Achievers Section. Every question is multiple choice with exactly one correct option, and every one comes with a fully worked solution rather than just an answer key — so a child who gets one wrong can see where the reasoning went astray instead of only learning that it did.

Skills your child practises

• Applied problem-solving on metals, non-metals and carbon compounds at Class 10 level
• Working accurately against a time limit, as the real paper demands
• Scientific Reasoning questions in the olympiad format
• Applying What You Know questions in the olympiad format
• Achievers Section questions in the olympiad format
• Reading worked solutions to find the step that went wrong

How to use it

1. 1There are 18 questions in this worksheet. All questions are compulsory.
2. 2Each question has four options (A), (B), (C) and (D). Exactly one option is correct.
3. 3Questions 1–15 carry 1 mark each. Questions 16–18 (Achievers Section) carry 3 marks each.
4. 4There is no negative marking. Study every diagram and table carefully.

Sample questions from this worksheet

A preview of what's inside Metals Non metals and Carbon Compounds (Class 10) — the PDF has the full set, and every question comes with a worked solution like these.

1. 1. Which metal is the best conductor of electricity?

   • ALead
   • BIron
   • CSilvercorrect
   • DMercury
   Solution: Silver conducts electricity better than any other metal, with copper close behind. Copper and aluminium are used in wiring instead only because silver is far too costly.

2. 2. Galvanisation protects iron from rusting by coating it with a layer of _______.

   • AZinccorrect
   • BCopper
   • CTin
   • DPaint
   Solution: Galvanisation coats iron with zinc. Zinc is more reactive than iron, so it corrodes first and shields the iron beneath even if the coating is scratched.

3. 3. Assertion (A): Aluminium articles keep their shine for years even though aluminium is a fairly reactive metal.Reason (R): A thin, tightly bound layer of aluminium oxide forms on the surface and protects the metal beneath.

   • ABoth A and R are true and R is the correct explanation of Acorrect
   • BBoth A and R are true but R is not the correct explanation of A
   • CA is true but R is false
   • DA is false but R is true
   Solution: Aluminium reacts at once with the oxygen of the air, but the oxide film it forms sticks firmly and seals the surface, so no further attack occurs. Both statements are true and the protective film is exactly why the shine lasts, so R explains A.