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Which of the following is a use of alum...

Which of the following is a use of alum

A

Making explosives

B

Bleaching clothes

C

Water softening

D

all of the above

Text Solution

Verified by Experts

The correct Answer is:
C
Alum is used for softening of water.
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ERRORLESS -S AND P BLOCK ELEMENTS-Ordinary thinking (Alkali metals)
  1. Which is the strongest reducing agent among alkali metals?

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  2. When sodium bicarbonate is heated strongly for calcined in a kiln, it ...

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  3. Which of the following is a use of alum

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  4. which of the following salt does not get hydrolysed in water?

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  5. Which of the following is a false statement

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  6. Squashes are stored by adding

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  7. In the preparation of sodium carbonate (By solvay ammonia soda process...

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  8. Which of the following reacts with water with high rate ?

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  9. The cell used for the electrolysis of fused NaCl is

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  10. Which of the following metal has stable carbonates ?

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  11. Photoelectric effect is the maximum in

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  12. The product obtained on fusion of BaSO(4) and Na(2)CO(3) is

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  13. The most stable compound is

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  14. In the Castner's process for the extration of sodium, the anode is mad...

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  15. Sodium peroxide which is a yellow solid, when exposed to air becomes w...

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  16. The metal that produces red violet colour in the non - luminous flame ...

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  17. Which one of the following on hydrolysis, gives the corresponding meta...

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  18. In the graph below, the one which present an alkali metal with the hig...

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  19. The alkali metal halide that is soluble in pyridine is

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  20. For alkali metals, which one of the following trends is incorrect ?

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