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Which of the following statements is fal...

Which of the following statements is false for alkali metals ?

A

Alkali metals are soft and can be cut with the help of a knife.

B

Alkali metals donot occur is free state in nature.

C

Alkali metals are highly electropositive elements.

D

Alkali metal hydrides are covalent in character.

Text Solution

Verified by Experts

The correct Answer is:
D
Alkali metal hydrides are ionic in character.
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MODERN PUBLICATION-S-BLOCK ELEMENTS ( ALKALI AND ALKALINE EARTH METALS ) -COMPETITION FILE ( MULTIPLE CHOICE QUESTION (B))
  1. The reaction between sodium and water can be made less vigorous by

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  2. Alkali metals have negative reduction potential and hence they behave ...

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  3. Which of the following statements is false for alkali metals ?

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  4. The salt of alkali metal gives violet colour in the flame test. Its aq...

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  5. What is the product of reaction between calcium carbide and water?

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  6. The correct statement for the molecule, CsI(3) is

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  7. The decreasing order of acidic character is :

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  8. Match the elements given in Column I with the colour they impart to th...

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  9. Which of the following are arranged in correct increasing order of sol...

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  10. Which halide of magnesium has highest ionic character?

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  11. The low solubility of LiF and that of CsI in water are respectively du...

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  12. The second ionization enthalpy of which of the following alkaline eart...

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  13. The main oxides formed on combustion of Li,Na and K in excess of air r...

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  14. Which of the following is covalent?

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  15. When 1 mole of a substance (X) was treated with an excess of water, 2 ...

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  16. Both lithium and magnesium display several similar properties due to t...

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  17. Dead burnt plaster is

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  18. Portland cement does not contain

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  19. Which of the following is least thermally stable ?

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  20. A metal on combustiion in excess air forms X.X upon hydrolysis with wa...

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