18. Write the name of two elements which are liquid at room temperature.
तत्वों का नाम लिखें जो कमरे के तापमान पर द्रव होती है।
(a) Sn and Hg (टीन एवं पारा)
(b) Hg and Br (पारा एवं ब्रोमीन)
(c) Br and Sn (ब्रोमीन एवं टीन)
(d) None of these (इनमें से कोई नहीं)
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your answer is b.
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At this temperature and ordinary pressure, only two elements are liquids: Bromine. Mercury.
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