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All the given oxides are amphoteric exce...

All the given oxides are amphoteric except

A

`PbO_2`

B

`Al_2O_3`

C

`SiO_2`

D

`SnO_2`

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AAKASH INSTITUTE-TEST 6-EXAMPLE
  1. Which among the following is a Lewis acid?

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  2. The best oxidizing agent among the following is

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  3. All the given oxides are amphoteric except

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  4. Which of the following is not true regarding beryllium?

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  5. Acetylene(C2 H2) can be obtained by the reaction of water with

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  6. On the basis of given reactions,the correct order of increasing oxidis...

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  7. The possible oxidation states of elements P,Q & R in the compound PQR3...

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  8. General formulla of two dimensional sheet silicates is

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  9. Among 2nd group metal oxidies, how many is/are amphoteric in nature

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  10. Match column-i with column-ii using the code given below. [{column-i ...

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  11. All the given carbonates give CO2 on decomposition except

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  12. which of the following ion has maximum mobility in aqueous solution

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  13. the percentage strength of 10 volume H2 O2 solution is nearly

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  14. Oxidation states of sulphur in H2 S2 O7, H2 SO3 and H2 S are respecti...

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  15. Which among the following is not a chemical component of photochemical...

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  16. Which of the folllowing cannot be be prepared by Wurtz reaction?

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  17. In conformational isoemrism which property is mailny different among v...

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  18. Which of the following alkyne can react with Tollen's reagent ?

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  19. In Kolbe's electrolytic method, the gas produced at cathode is

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  20. Which of the following set of groups can show +R effect?

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