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In soldering, addition of flux makes sol...

In soldering, addition of flux makes soldering easily why?

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The addition of flux reduces the surface tenion of molten tin, hence it spreads.
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PREMIERS PUBLISHERS-PROPERTIES OF MATTER-OTHER IMPORTANT QUESTION & ANSWERS (CONCEPTUAL QUESTIONS)
  1. Following are the graphs of elastic materials which one corresponds to...

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  2. It is difficult to stop bleeding from a cut in human body at high alt...

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  3. In soldering, addition of flux makes soldering easily why?

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  4. Which type of strain is there, when a spiral spring is stretched by a ...

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  5. When bits of camphor are dropped on water, they move erratically. Why?

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  6. What will be the effect on the angle of contact of a liqud if the temp...

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  7. We can cut vegetables easily with a sharp knife as compared to a blunt...

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  8. Why water is not used in barometers?

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  9. The dams of water reservoir are made thick near the bottom. Why?

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  10. A man is sitting in a boat, which is floating on a pond. If the man dr...

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  11. Why is it easier to swim in sea water than in river water?

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  12. Stirred liquid comes to rest after some time. Why?

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  13. Why machine parts are not jammed in the summer?

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  14. Which fall faster-big rain drops or small rain drops?

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  15. Why does a flag flutter, when strong winds are blowing on a certain da...

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  16. Why hot soup tastes better than cold soup?

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  17. Why new earthen pots keep water cooler than the old one?

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  18. Explain why some oils spread on water, when others float as drops.

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  19. Out of friction force and viscous force which depends upon velocity.

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  20. What will be the velocity of water when it passes from narrow tube to ...

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