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The following some statments about IA gr...

The following some statments about IA group elements
i) The redioactive IA group element is Fr
ii) Alkali metals donot occurs in free state because of their high reactivity
iii) The most abundant alkali metal in the earth is Na

A

only ii correct

B

i and are correct

C

All are correct

D

i and iii are correct

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-REVISION EXERCISE -CHEMICAL EQUILIBRIUM
  1. The following some statments about IA group elements i) The redioact...

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  2. 50 g CaCO(3) is allowed to dissociated in 22.4 lit vessel at 819^(@)C ...

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  3. One mole of A (g) is heated to 200^@ C in a one litre closed flask, ti...

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  4. An equilibrium mixture for the reaction, 2H(2)S(g) hArr 2H(2) (g) + S(...

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  5. For the reversible reaction N(2 (g)) + 3 H(2 (g)) hArr 2 NH(3 (g)) a...

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  6. The Kc for the reaction I(2 (g)) hArr 2I((g)) is 4 xx 10^(-3) . If the...

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  7. At 298 K, the molar equilibrium concentrations of Ag^(+) , NH(3) and [...

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  8. The value of K(p) for the reaction 2H(2)S(g) hArr 2H(2)(g) +S(2)(g) is...

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  9. In a closed container and at constant temperature 0.3 mole of SO(2) & ...

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  10. For A + B hArr C + D ,Delta H = -Q KJ , K(f) & K(b) respectively are ...

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  11. At certain temperature 28 gm of N(2) and 6 gm of H(2) are taken in a 2...

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  12. x mol N(2) O(4) is taken at P1 atm in a closed vessel & heated . When ...

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  13. 3 moles of NH3 are allowed to dissociate in a 5 litre vessel and the e...

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  14. When 1 mole of N2 and 1 mole of H2 is enclosed in a 5 L vessel and rea...

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  15. One mole of compound AB reacts with one mole of a compound CD accordin...

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  16. 56 gm of nitrogen and 4 gm of hydrogen are taken in a closed vessel

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  17. AB(2) dissociates as : AB(2 (g)) hArr AB((g)) + B((g)) When the intia...

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  18. At a certain temperature and total pressure of 10^(5)Pa, iodine vapour...

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  19. For the reaction SnO(2(s)) + 2H(2(g)) hArr 2H(2) O((g)) + Sn((d)) . Ca...

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  20. 3 mole of reactant A and one mole of reactant B are mixed in a vessel ...

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  21. An amount of solid NH(4) HS is placed in a flask already containing am...

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