Asked: 56th to 59th B.P.S.C. (Pre) 2015medium Level
QUESTION STATEMENT:द्विभाषी / Bilingual
सबसे अधिक क्रियाशील धातु कौन-सी है?
Which is the most reactive metal?
SELECT CORRECT OPTION:
A
सोडियम
Sodium
B
कैल्शियम
Calcium
C
आयरन (लोहा)
Iron
D
पोटैशियम
Potassium
Correct
Official Solution & Explanation:
Correct Answer: Option D(पोटैशियम)
विद्युत रासायनिक सक्रियता श्रेणी (Reactivity Series) के अनुसार दिए गए विकल्पों में सर्वाधिक क्रियाशील धातु पोटैशियम ($K$) है। सक्रियता का घटता क्रम है: पोटैशियम ($K$) > सोडियम ($Na$) > कैल्शियम ($Ca$) > आयरन ($Fe$)।
According to the metal activity series, potassium ($K$) is the most reactive among the given options, following the order: $K > Na > Ca > Fe$.
Subject: General Science•Topic: Metals, Minerals, Ores: Properties and Uses•Subtopic: Metals, Minerals, Ores: Properties and Uses
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