Question

25. एक समतल वृत्ताकार वलय का क्षेत्रफल ज्ञात कीजिए जिसकी दोनों परिधियाँ क्रमश: 50:26 सेमी तथा
43.98 सेमी तथा चौड़ाई 1 मीटर है।​

Answer 1

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Chromatography is a laboratory technique for the separation of a mixture. The mixture is dissolved in a fluid called the mobile phase, which carries it through a system on which is fixed a material called the stationary phase.