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In a reaction ""(4)Be^(9)+"Projectile"to...

In a reaction `""_(4)Be^(9)+"Projectile"to""_(4)Be^(8)+""_(0)n^(1)`, the projectile is

A

`alpha`- particle

B

`beta`- particle

C

positron

D

`gamma`- ray

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2007-CHEMISTRY
  1. For a reversible reaction, if the concentration of the reactants are d...

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  2. Which of the following is most acidic in character?

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  3. In a reaction ""(4)Be^(9)+"Projectile"to""(4)Be^(8)+""(0)n^(1), the pr...

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  4. Conversion of RCOOH to RCH(2)OH can be achievedby

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  5. The root mean square speed at sTP of molecules H(2),N(2),O(2) and HBr ...

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  6. Which of the following compound forms two isomeric oxims on reactig wi...

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  7. 3-phenyl propene on reaction with HBr gives (as a major product)

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  8. BaSO(4) is water insoluble although it is an ionic compound because of

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  9. The atmospheric gas which cannot produce greenhouse effect is

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  10. In acidic medium, the equivalent wight of K(2)Cr(2)O(7) (Mol. Wt. =M) ...

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  11. The oxidation state of Fe in[Fe(H(2)O)(5)NO]SO(4) is

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  12. Number of sigma- bond, pi- bond and Ione pari (lp) of electrons in ace...

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  13. Equivalent conductance of an weak acid at 0-1 M concentration is 100 t...

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  14. Role of ATP in bioenergetics is

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  15. Molar conductivities of H^(+),Na^(+),K^(+) and Rb^(+) ions in aqueous ...

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  16. Chloride of a metal (M) of specific heat 0-16 contains 63.96% of chorl...

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  17. A solution of a metal salt gives a gelatinous white precipitate on tre...

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  18. Cryolite is added to alumina in the electrolytic production of the alu...

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  19. Which of the following characteristics will always lead to a spontaneo...

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  20. If the reaction CH(3)COOCH(3)+H(2)Ounderset(["acid"])overset(H^(+))...

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