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MODEL PAPER 6 — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceMODEL PAPER 61 Mark
MCQ
Select the incorrect match.
  • ✓
    A metal used in joining electric wires - Magnesium
  • B
    A metal extracted by using electrolytic reduction - Aluminium
  • C
    A metal whose oxide is soluble in both acids and bases Zinc
  • D
    A metal unreactive towards oxygen and dilute acids - Gold
✓

Answer

Correct option: A.
A metal used in joining electric wires - Magnesium
(a) A metal used in joining electric wires - Magnesium
Explanation: Copper metal is used in joining electric wires due to its high electrical conductivity, enough tensile strength and ductility.

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