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Zeiglar catalysis utilises a mixture of ...

Zeiglar catalysis utilises a mixture of trialkylaluminium and a chloride of the element

A

Sc

B

Ti

C

V

D

Cr

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B
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Electrolysis is an important technique for extraction of metals and each low of the solution needs a minimum voltage to get discharged and this value is expressed in terms of discharge potential. For some metal ions the discharge potentials follow the order give below : Li^(+) gt K^(+) gt Ca^(2+) gt Na^(+) gt Mg^(2+) gt Al^(3+) gt Zn^(2+) gt Fe^(2+) gt Ni^(2+) gt H_(3)O^(+) gt Cu^(2+) gt Hg_(2)^(2+) gt Ag^(+) gt Au^(3+) For some anions the discharge potentials are in the order: SO_(4)^(2-) gt NO_(3)^(-) gt OH^(-) gt Br^(-) gt I^(-) A mixture containing chlorides of sodium, calcium and zinc is electrolysed in presence of water The product obtained at cathode will be

An acid (A) which is an important constituent of vinegar, on reaction with red P_4 and Br_2 gives a monobromoderivative (B) which on reaction with NH_3 gives a white solid (C). However, ethanal on reaction with a mixture of ammonium chloride and sodium cyanide undergoes strecker synthes is to give a product which on acidic hydrolysis gives another high melting solid (D). The structure of the compound (D) is

An acid (A) which is an important constituent of vinegar, on reaction with red P_4 and Br_2 gives a monobromoderivative (B) which on reaction with NH_3 gives a white solid (C). However, ethanal on reaction with a mixture of ammonium chloride and sodium cyanide undergoes strecker synthes is to give a product which on acidic hydrolysis gives another high melting solid (D). The dipolar ion is formed by

An acid (A) which is an important constituent of vinegar, on reaction with red P_4 and Br_2 gives a monobromoderivative (B) which on reaction with NH_3 gives a white solid (C). However, ethanal on reaction with a mixture of ammonium chloride and sodium cyanide undergoes strecker synthes is to give a product which on acidic hydrolysis gives another high melting solid (D). The total number of optical iosmers of (C) and (D) are

AAKASH SERIES-D - BLOCK ELEMENTS-OBJECTIVE EXERCISE - 1 (LANTHANIDES AND ACTINIDES)
  1. Which element among the lanthanides has the smallest atomic radius

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  2. The electronic configuration of gadolinium (At No. = 64) is

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  3. Across the lanthanide series, the basic strength of the lanthanide hyd...

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  4. Most common oxidation states shown by cerium are

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  5. Which of the following statements is not correct ?

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  6. Arrange Ce^(3+), La^(3+), Pm^(3+) and Yb^(3+) in increasing order of t...

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  7. The basic character of the transition metal monoxides follows the orde...

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  8. Which of the following is a lanthanide ?

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  9. Which of the two have almost similar size

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  10. In aqueous solutions Eu^(2+) acts as

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  11. The radius of La^(3+) (Z=57) is 1.06A^(@). Which one of the following ...

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  12. The actinide element which can exhibit +7 oxidation state in its compo...

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  13. Highest oxidation state exhibited by an actinide element in its compou...

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  14. Actinide that is naturally available with highest isotopic number

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  15. Manganese dioxide is used in

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  16. Zeiglar catalysis utilises a mixture of trialkylaluminium and a chlori...

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  17. Silver UK coins are made up with an alloy

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  18. Photography is based on special light sensitive properties of

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  19. Oxidation of an alkyne to the corresponding carbonyl compound is catal...

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