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Fill in the following blanks: (a) Comm...

Fill in the following blanks:
(a) Common salt is obtained from sea-water by the process of_____
(b) Rock salt is mined just like_____
(c) Chemical formula of washing soda is_____
(d) Sodium hydrogencarbonate is_____ soda whereas sodium carbonate is ______soda.
(e). The chemical formula of plaster of Paris is______

A

NaOH

B

`NaHCO_(3)`

C

`Na_(2)CO_(3)`

D

`Na_(2) CO_(3). 10H_(2)O`

Text Solution

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The correct Answer is:
D
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The Salt Story From: The New Indian Express 9 March 2021 The salt pans in Marakkanam, a port town about 120 km from Chennai are the third largest producer of salt in Tamil Nadu. Separation of salt from water is a laborious process and the salt obtained is used as raw materials for manufacture of various sodium compounds. One such compound is Sodium hydrogen carbonate, used in baking, as an antacid and in soda acid fire extinguishers. The table shows the mass of various compounds obtained when 1litre of sea water is evaporated Which compound in the table reacts with acids to release carbon dioxide?

Fill in the following blanks with suitable words: (a). Magnesium liberates_____gas on reacting with hot boiling water. (b). The white powder formed when magnesium ribbon burns in oxygen is of______ (c). Ordinary aluminium strips are not attacked by water because of the presence of a layer of ______ on the surface of aluminium. (d). A metal having low melting point is_____ but a non-metal having very high melting point is_____ (e). Calcium is a ______reaactive metal than sodium.

MARVEL PUBLICATION-S BLOCK ELEMENTS -TEST YOUR GRASP
  1. Fill in the following blanks: (a) Common salt is obtained from sea-...

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  2. Which of the following sets of atomic numbers is of the alkali metals ...

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  3. The elements of group 1 are called alkali metals because

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  4. Chill salt petre is

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  5. Which of the following is sparingly soluble in water ?

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  6. Which of the following statement is incorrect ? a)Oxide of aluminium ...

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  7. Pick out statement (s) which is/are not true about diagonal relationsh...

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  8. Which one is the highest melting halide ?

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  9. "Electron" is an alloy of

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  10. Sodium burns in dry air to give

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  11. Select odd pair of name of chemical and its chemical composition.

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  12. The raw materials required for the manufacture of Na(2)CO(3) by Solva...

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  13. The carbonate that will not decompose on heating is

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  14. The alkali metal used in photoelectric cell is

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  15. Which of the following if good source of potassium ?

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  16. The first ionization enthalpy of magnesium is lower than the first ion...

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  17. Which of the following feact only with boiling water ?

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  18. Mg burns in air to give

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  19. Beryllium and aluminium exhibit many properties which are similar . Bu...

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  20. Which of the following is not a compound of calcium ?

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  21. Mark the compound which does not contain calcium carbonate ?

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