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Assertion: The heavier p-block elements form storng p−bonds. Reasons: The heavier elements of p-block form bonds.  

Option 1 -

Both A and R are true and R is the correct explanation of A.

Option 2 -

Both A and R are true but R is not the correct explanation of A.

Option 3 -

A is true but R is false.

Option 4 -

Both A and R are false.

0 1 View | Posted a month ago
Asked by Shiksha User

  • 1 Answer

  • A

    Answered by

    alok kumar singh | Contributor-Level 10

    a month ago
    Correct Option - 3


    Detailed Solution:

    In the metallurgy of aluminium, purified Al2O3 is mixed with Na3AIF6 or CaF2 which lowers the melting point of the mixture and brings conductivity.

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Which of the following element(s) is/are confirmed by appearance of blood red colour with FeCl3 in Lassaigne's test?
A
alok kumar singh

Na+ C + N + S ®NaSCN

Fe3+ + SCN– → [ F e ( S C N ) ] 2 + B l o o d   r e d

Which among the following is malachite?
A
alok kumar singh

Kindly go through the solution

 

Statement – I : Ellingham diagram explains the kinetics of reduction process.

Statement – II : Hydraulic washing, a method of concentration of ore is based on the differences in gravities of the ore and the gangue.

In the light of above statements choose the correct option among the following.
V
Vishal Baghel

Ellingham diagram explains the feasibility of reduction process not the kinetics of process.

Which among the following is malachite?

A
alok kumar singh

Malachite : CuCO3.Cu (OH)2

Azurite : 2CuCO3.Cu (OH)2

Cuprite : Cu2O

Copper pyrite : Cu2S.Fe2S3.

Match List – I with List – II

                  List – I                                                                               List – II

                  (Metal)                                                                             (Ores)

           (a) Aluminium                                                                (i) Siderite

           (b) Iron                                                                             (ii) Calamine

           (c) Copper                                                                       (iii) Kaolinite

           (d) Zinc                                                                             (iv) Malachite

           Choose the correct answer from the options given below:
V
Vishal Baghel

Aluminium         -             Kaolinite

Iron                         -             Siderite

Copper                   -             Malachite

Zinc             &

...more

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