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Al(4)C(3) is a ionic carbide, named as:...

`Al_(4)C_(3)` is a ionic carbide, named as:

A

Acetylide

B

Methanide

C

Allylide

D

Alloy

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Aluminum carbide (Al_(4)C_(3)) liberates methane on treatment with water. The grams of aluminium carbide required to produce 11.2 L of methane under STP coniditions is [ Given Al =27]

Assertion: Anhydrous AlCl_(3) is covalent while hydrated AlCl_(3) is ionic. Reason: In water AlCl_(3) is presennt as Al_((aq.))^(3+) and Cl_((aq.))^(-) ion.

1 mole of CaC_(2), Mg_(2)C_(3) and Al_(4)C_(3 react with water in separate flask. Work done by the system in the three cases respectively are w_(1), w_(2) and w_(3) . Then which of the following is/are incorrect.

A mol of Al_(3)C_(4)(s) reacts with water in a closed vessel at 27^(@)C against atmospheric pressure, work is doens

The number of oxygen atoms present in 20.4 g of Al_(2)O_(3) are equal to the number of :

Which of the following are ionic carbides ?

Assertion : K_(2)[Ni(EDTA)] is more stable than K_(3)[Al(C_(2)O_(4))_(3)] . Reason : Ni is a transition element while Al is a non-transition element .

Delta H_(f)^(@) for Al_(2)O_(3) is -1670 KJ. Calculate the enthalpy change for the reaction 4Al+3O_(2)rarr 2Al_(2)O_(3)

Which of the following expressions correctly repesents the equivalent conductance at infinte dilution of Al_(2)(SO_(4))_(3) . Given that Lambda_(Al^(3+))^(@) and Lambda_(SO_(4)^(2-))^(@) are the equivalent conductance at infinte dilution of the respective ions?

Al_(2)O_(3) is reduced by electrolysis at low potentials and high current. If 4.0 xx 10^(4) amperes of currernt is passed through molten Al_(2)O_(3) for 6 hours, what mass of aluminium is produced? (Assume 100 % current efficiency, At. Mass of Al = 27 u )

VMC MODULES ENGLISH-p-BLOCK ELEMENTS-1-LEVEL 1
  1. BCl(3)+H(2)O rarr X The products fored in the above reaction are

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  2. Aluminium chloride exists as a dimer, Al(2)Cl(6) in solid state as wel...

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  3. Al(4)C(3) is a ionic carbide, named as:

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  4. बोरिक ऐसिड अम्ल है, क्योंकि

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  5. Heating an aqueous solution of aluminium chloride to dryness will give

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  6. The correct order of Lewis acidic strength of boron trihalides :

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  7. In diborane, the two H-B-H angles are nearly

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  8. In group 13, Tl (thalium) shows +1 oxidation state while other members...

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  9. Correct order of bond angles in the given compounds is/are

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  10. The correct order of increasing atomic radii, is :

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  11. Which type of silicate is shown in the given figure ?

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  12. Buckminister-fullerene is a variety of :

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  13. The basic structural unit in silicates is

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  14. On strong heating lead nitrate gives:

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  15. Among the following substituted silanes, the one which will give rise ...

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  16. Identify B in the following H(4)SiO(4) underset(-H(2)O) overset(1000^(...

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  17. In silica (SiO(2)) each silicon is bonded to :

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  18. The incorrect statements among the following is/are : I. Fullerene ...

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  19. The stability of dihalides of Si, Ge, Sn and Pb increases steadily in ...

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  20. In SiF6^(2-) and SiCl6^(2-) , which one is known and why ?

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