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Correct statements regarding diagnal rel...

Correct statements regarding diagnal relationship between belyllium and aluminium are A) Both `BeCl_(2) and AlCl_(3)` are strong Lewis acids
B) Both `Be(OH)_(2) and Al(OH)_(3)` are dissolve in excess alkali to give beryllate ion and aluminate ion respectively
C) Charge/radius ratio of `Bc^(2+) and A^(2+)` ions is similar
D) Both `BeCl_(2) and AlCl_(3)` are insoluble in organic solvents 

A

A, B, D

B

A, B, C

C

B, C, D

D

A, C, D

Text Solution

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The correct Answer is:
B
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An organic compound (A) of molecular weight 135 on boiling with NaOH evolves a gas which gives white dense fumes on bringing a rod dipped in HCl near it. The alkaline solution thus obtained on acidification gives the precipitate of a compound (B) having molecular weight 136. Treatment of (A) with HNO_2 also yeilds (B), whereas its treatment with Br_2//KOH gives (C). compound (C) reacts with cold HNO_2 to give(D), which gives red colour with ceric ammonium nitrate. On the other hand(E) an isomer of (A) on boiling with dil HCl gives an acid (F), having molecular weight 136. On oxidation followed by heating, (F) gives an anhydride (G) which condenses with benzene in presence of AlCl_3 to give anthraquinone. Structural formula of compound (C) is

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AAKASH SERIES-ALKALINE EARTH METALS-PRACTICE EXERCISE
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  2. Beryllium hydroxide dissolves in excess of alkli to give

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  3. Correct statements regarding diagnal relationship between belyllium an...

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  4. The decomposition temperature of BaCO(3) (A), MgCO(3) (B) and CaCO(3) ...

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  5. Weight percentage of silica in portland cement is

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  6. During the conversion of one mole of gypsum to one mole of plaster of ...

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  7. Match the following {:("LIST - I","LIST - II"),("A) Aqueous solution...

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  8. The basic character of oxides MgO, SrO, K(2)O, NiO, Cs(2)O increase in...

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  9. A burning strip of magnesium is introduced into a jar containing a gas...

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  10. The calcium concentration in plasma is regulated by which harmones

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  11. Correct matching about composition of portland cement is {:("List - ...

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  12. Bleaching powder is obtained by the reaction chlorine with

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  13. Be(OH)(2)+2HCl+2H(2)Orarr X  In the complex "X", oxidation state and...

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  14. Which of the following is unstable and can be kept only in the atmosph...

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  15. Wrong statement of the following is

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  16. A suspension of mangnesium hydroxide in water is called ----- and is u...

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  17. Alkaline earth metal having least melting point is

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  18. Correct order of hydration enthalpies

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  19. Which of the following is NOT correct ?

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  20. CaCO(3).MgCO(3)overset(Delta)rarrX+Y+Z

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