Recent questions tagged class 12

What is food preservatives?

asked Jul 11, 2017 by pady_1

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what is Freons

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Give the Physical Properties of Haloalkanes

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Give the difference between Inner Orbital complexes and oute

asked Jul 10, 2017 by pady_1

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Give The factors on which stability of the complex depends :

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Give the limitations of Crystal Field Theory

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Define Chelate ?

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What is Denticity ?

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Explain Werner’s Theory

asked Jul 10, 2017 by pady_1

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What is Effective Atomic Number (EAN)

asked Jul 10, 2017 by pady_1

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Explain the Types of Complexes

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What is Counter ions?

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What is Coordination number ?

asked Jul 10, 2017 by pady_1

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What is Ligands ?

asked Jul 10, 2017 by pady_1

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On what ground can you say that scandium (Z = 21) is a transition element but zinc is not.

asked Jul 10, 2017 by pady_1

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Why is Cr2+ reducing and Mn3+ oxidising when both have d 4 configuration?

asked Jul 10, 2017 by pady_1

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Why do the transition elements exhibit higher enthalpies of atomisation?

asked Jul 10, 2017 by pady_1

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asked Jul 10, 2017 by pady_1

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What is Transition element?

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asked Jul 5, 2017 by pady_1

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Give the preparation of Ammonia by Haber’s Process.

asked Jul 4, 2017 by pady_1

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Give the preparation of Ammonia by Haber’s Process.

asked Jul 4, 2017 by pady_1

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How the behavior of Nitrogen does differs from other elements.

asked Jul 4, 2017 by pady_1

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Explain the preparations of Ozone.

asked Jul 4, 2017 by pady_1

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Explain the preparations of Ozone.

asked Jul 4, 2017 by pady_1

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Explain why halogens are coloured?

asked Jul 4, 2017 by pady_1

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Give the order of Bond dissociation enthalpy $- Cl_2 , Br_2 , F_2 , I_2$

asked Jul 4, 2017 by pady_1

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Give the order of Bond dissociation enthalpy $- Cl_2 , Br_2 , F_2 , I_2 $

asked Jul 4, 2017 by pady_1

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Give two examples to show the anomalous behavior of fluorine.

asked Jul 4, 2017 by pady_1

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Halogens have maximum negative electron gain enthalpy in the respective periods of the periodic table. Why?

asked Jul 4, 2017 by pady_1

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Write the conditions to maximize the yield of $H_2SO_4$ by Contact process

asked Jul 4, 2017 by pady_1

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Write the order of thermal stability of the hydrides of Group 16 elements.

asked Jul 4, 2017 by pady_1

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Bond angle in $PH_4 ^+$ is higher than that in $PH_3$. Why?

asked Jul 4, 2017 by pady_1

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In what way can it be proved that $PH_3$ is basic in nature?

asked Jul 4, 2017 by pady_1

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In what way can it be proved that PH3 is basic in nature?

asked Jul 4, 2017 by pady_1

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asked Jul 4, 2017 by pady_1

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How to obtain dry ice.

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How to obtain dry ice.

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What is Inert pair effect?

asked Jul 4, 2017 by pady_1

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What are p-Block elements?

asked Jul 4, 2017 by pady_1

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