Metals & Non-metals: Class 10 Previous Year Questions

Metals & Non-metals questions asked in CBSE board exams

Repeated questions first. Open the free app to see each question as it appeared in the paper, with its marking scheme.

1. Read the following passage and answer the questions given below : Most of metals occur in combined state in form of ores. Carbonate ores Oxides are reduced with suitable reducing agent like carbon to get free metal. Highly reactive metals like - Al, Mg are als…
   Board 20263 marksshort answer
2. Attempt either (a) or (b) : (a) (i) Write one example each of one metal that is so soft that it can be cut with a knife, and one non-metal that is a good conductor of electricity. (ii) Using the electronic configuration, explain how Mg atom combines with oxyge…
   Board 20262 marksshort answer
3. The carbohydrates, which are not used immediately in plants, are stored in the form of ‘a’, which serves as an internal energy reserve. What does ‘a’ stand for ? 1 (A) Starch (B) Sugar (C) Fat (D) Protein
   Board 20261 markMCQ
4. Suggest one best way to dispose of the following wastes : 2 (i) Kitchen waste (ii) Metallic waste (iii) Plastic bottles (iv) Sanitary waste
   Board 20261 markMCQ
5. When Mg metal is treated with hot water, it starts floating on the surface of the water. The reason for its different behaviour is : 1 (A) Mg is a lighter element than water. (B) Mg reacts with water to produce H2 gas which helps in floating. (C) Mg reacts wit…
   Board 20261 markMCQ
6. (a) ‘‘Displacement reactions also play a key role in extracting metals in the middle of the reactivity series.’’ Justify this statement with two examples. (b) Why can metals high up in the reactivity series not be obtained by reduction of their oxides by carbo…
   Board 20253 marksshort answer
7. (a) In common practice silver is recovered from silver nitrate solution by the use of copper metal. Name the type of reaction that takes place in this process and give the chemical equation of the reaction involved. (b) Name the method used for refining silver…
   Board 20252 marksshort answer
8. Aluminium powder is used in thermit welding because : (A) Its reaction with iron is highly exothermic. (B) When it is heated with iron (III) oxide, molten iron is obtained. (C) When it is heated with iron (III) oxide, molten aluminium oxide is obtained to join…
   Board 20251 markMCQ
9. Two metals zinc and tin are dissolved separately in definite proportions in molten copper (the primary metal) to obtain two different alloys respectively known as : (A) Bronze and Brass (B) Brass and Solder (C) Brass and Bronze (D) Solder and Bronze
   Board 20251 markMCQ
10. Assertion (A) : Different metals have different reactivities with water and dilute acids. Reason (R) : Extraction of a metal from its ore depends on its position in the reactivity series.
    Board 20241 markAssertion-Reason
11. p p p 37. The metals produced by various reduction processes are not very pure. They contain impurities, which must be removed to obtain pure metals. The most widely used method for refining impure metals is electrolytic refining. (i) What is the cathode and a…
    Board 20244 markscase-based
12. Draw a labelled diagram to show electrolytic refining of copper. State what happens when electric current is passed through the electrolyte taken in this case. 15 (a) 29. (i) (ii· -8 h h 2 e h () (b) (i) 29. (i)(ii)1 16
    Board 20243 marksshort answer
13. A metal and a non-metal that exists in liquid state at the room temperature are respectively : (a) Bromine and Mercury (b) Mercury and Iodine (c) Mercury and Bromine (d) Iodine and Mercury
    Board 20241 markMCQ
14. Oxides of aluminium and zinc are : (a) acidic (b) basic (c) amphoteric (d) neutral
    Board 20241 markMCQ
15. A metal 'X' is used in thermite process. When X is burnt in air it gives an amphoteric oxide Y. X' and 'Y are respectively : (a)Fe and Fe,O: (b)Al and Al,O: Fe and Fe,O4 (c) (d)Al and Al,O4 6. (a) NaHCO3 (b) Na,CO..5H,0 Na,CO..10H,0 (d) (c) NaOH 7. H- (A) (B) …
    Board 20231 markMCQ
16. Among the following, the metal with lowest density is : (a) Lithium (b) Lead (c) Magnesium (d) Aluminium
    Board 20231 markMCQ
17. The number of electrons in the outermost shell of the atom of a non-metal can be : (a) 1, 2 or 3 (b) 3, 4 or 5 (c) 5, 6 or 7 (d) 5, 6 or
    Board 20231 markMCQ
18. Assertion (A) : Sodium oxide is an amphoteric oxide. Reason (R) : Metal oxides which react with both acids as well as bases are known as amphoteric oxides.
    Board 20231 markAssertion-Reason
19. (H$) AmYw{ZH$ AmdV© gmaUr _| {H$gr VÎd H$s na_mUw g§»`m H$mo VÎdm| Ho$ dJuH$aU Ho$ AmYma Ho$ ê$n _| AnZmZo Ho$ Xmo bm^m| H$s gyMr ~ZmBE & (I) VÎdm| X (na_mUw g§»`m 13) Am¡a Y (na_mUw g§»`m 20 {b{IE &
    Board 20221 markvery short
20. Sakshi was comparing the reactivity of different metals for her science project. She added iron filings in four test tubes A,B,C,D containing aqueous solutions of ZnSO4, CuSO4, FeSO4 and Al2(SO4)3 respectively as shown in the figure – . a. In which of the test…
    CBSE practice 2023-243 marksshort answer

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