Question

(b) The first sattelite to be lauched by Russian scientist Was.
(c)The process of transformation of water into water vapour on heating is known as
(d) The has is used tobproduce the colors in bulb and fluorescent tube.​

Answer 1

Answer:

b . Sputnik 1 October 4 th 1957

c . Evaporation

d . Tungsten

Explanation:

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