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Class 9 Science

Ch. 1 Matter In Our Surroundings Ch. 10 Gravitaion Ch. 15 Improvement In Food Resources

Chem. Ch-1 Matter In Our Surroundings

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            Ch.1 Matter In Our Surroundings Exercises Q1. Convert the following temperatures to the celsius scale.       (a) 293 K               (b)  470 K A1.   (a)  *(t)K = (t) ° c   + 273            ⇒  293 =  (t) ° c +273           ⇒    (t) ° c = 293 - 273           ⇒    (t) ° c = 20 ° c                (b)   (t)K = (t) ° c   + 273           ⇒  470 =  (t) ° c + 273            ⇒ (t) ° c = 470 - 273            ⇒ (t) ° c  = 197 ° c *(t) refers to temperature. Q2.  Covert the following temperatures to the Kelvin scale.         (a)  25 ° c      ...