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Match1.Lithiuma- soft soap2. Sodiumb-photoelectric cells3. Potassiumc- electrochemical cells4. Caesiumd- coolant

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Match<br><table border='1'><tbody><tr><td>1.Lithium</td><td>a- soft soap</td></tr><tr><td>2. Sodium</td><td>b-photoelectric cells</td></tr><tr><td>3. Potassium</td><td>c- electrochemical cells</td></tr><tr><td>4. Caesium</td><td>d- coolant</td></tr></tbody></table>






 
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