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Which of the following represents the co...

Which of the following represents the compositions of Carnallite mineral ?

A

` K_2O , Al_2O_3 , 6SiO_2`

B

` KNO_3`

C

` K_2SO_4,MgSO_4 , MgCl_(2).6H_2O `

D

`KCl .MgCl_2. 6H_2O `

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2011-CHEMISTRY
  1. Reaction of formaldehyde and ammonia gives .

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  2. A plot of In k against (1)/(T) (absoissa) is expected to be a strai...

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  3. Which of the following represents the compositions of Carnallite miner...

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  4. The solubility of Ca3 (PO4) 2 in water is y moles/ litre. Its solu...

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  5. Paracetamol is

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  6. Anhydrous ferric chloride is prepared by

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  7. Which one of the following is s- butyl phenylvinyl methane ?

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  8. Hybridization of C2 and C3 " of " H3C - CH =C =CH -CH3 are

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  9. Which of the following compounds is not formed in iodoform reactions ...

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  10. The energy of an electron in first Bohr orbit of H-atom is -13.6 eV. T...

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  11. The amount of heat released when 20 ml 0.5 M NaOH is mixed with 100 m...

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  12. Which one of the following has the lowest ionization energy?

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  13. The ozone layer forms naturally by

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  14. 2 gm of metal carbonate is neutralized by 100 ml of 0.1 (N) HCl . The...

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  15. Which one of the following is not true at room temperatue and pressure

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  16. An electric current is passed through an aquous solution of a mixture ...

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  17. The representation of the ground state electronic configuration of He...

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  18. The electronic transitions from n=2 to n =1 will produce shortest wav...

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  19. In the following electron dot structure , calculate the formal charge ...

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  20. If the molecular wt.of Na2S2O3 and I2 " are" M1 and M2 respectively...

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