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Select the ciorrect statement with respe...

Select the ciorrect statement with respect to alkali metals.

A

Melting point decrease with increasing atomic number.

B

Potassium is lighter than sodium.

C

Salts of Li to Cs impart characteristic colour to an oxidising flame (of Bunsen burner).

D

All of these

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The correct Answer is:
D
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NARAYNA-S-BLOCK ELEMENTS-Level V-(ONLY ONE ANSWER CORRECT )
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  2. Which dispropottionates into M(2)O(2)(peroxide) and M(metal)on heating...

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  3. Select the ciorrect statement with respect to alkali metals.

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  4. Consider the following statements, S(1) : Alkali metals are never fo...

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  5. Drying agent which reacts with CO2 and involves water vapour is

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  6. (X) reacts with sulphur dioxide in aqueous medium to give NaHSO(3), (X...

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  7. Acidified solution f sodium thiosulphate are unstable because:

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  8. The products obtained on heating LiNO(3) will be

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  9. Which of the following on thermal decomposition yields a basic as wel ...

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  10. The hottest region of Bunsen flame shown in the figure given below is

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  11. Which of the following increases in magnitude as the atomic number of ...

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  12. Alkali metals give coloue in Bunsen flame due to :

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  13. Which of the following about solution lf alkali metals in lioquid ammo...

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  14. Select the incorrect statement :

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  15. Consider the following statements, S(1) : Alkali metals are never fo...

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  16. Which of the following has the highest reactivity towards water?

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  17. Sodium burns in dry air to give :

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  18. Alkali metals are characterised by

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  19. In view of their low ionisation energies, the alkali metals are

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  20. Carbon can be oxidised to C(2) while heating its powder with :

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