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

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

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

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  7. General formulla of two dimensional sheet silicates is

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

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

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  10. All the given carbonates give CO2 on decomposition except

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

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

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  13. The number of moles of oxalic acid requires to react completely with o...

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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. The number of moles of Hydrogen fluoride in 160 g is

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  18. The number of moles of benzene in 390 g is

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  19. Which of the following is aromatic in nature?

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  20. The number of moles of Copper(II) Sulfate in 960 g is

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