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Allotropy is the occurence of same eleme...

Allotropy is the occurence of same element in two or more different physical forms having more or less similar chemical properties but different physical properties. The different forms of the element are called allotropes. Allotropy is due to the difference in the arrangement of atoms in solid state. Allotropes may be crystalline or amorphous
Which among the following statements are correct ?

A

Aquadag and oildag are made up of graphite

B

Graphite reacts with conc. `HNO_(3)` to form mellitic acid `C_(6)(COOH)_(6)`

C

`C_(3)O_(2)` is also toxic like CO

D

COO is non poisonious gas

Text Solution

Verified by Experts

The correct Answer is:
A
Graphite = Aquadag + oil dag
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Knowledge Check

  • Allotropy is the occurence of same element in two or more different physical forms having more or less similar chemical properties but different physical properties. The different forms of the element are called allotropes. Allotropy is due to the difference in the arrangement of atoms in solid state. Allotropes may be crystalline or amorphous Among the following statements are incorrect statement(s) is / are

    A
    Of all the elements carbon exhibit maximum catenation power
    B
    Silanes are less stable than hydrocarbon because - I effect of hydrogen, decreases the electron density of Si - Si bond
    C
    Silicon exhibit more catenation power in halides than in hydrides due to `ppi-ppi` nature
    D
    `CS_(2)` is a volatile liquid while `SiS_(2)` is high melting solid due to polymeric structure

  • Allotropy is the occurence of same element in two or more different physical forms having more or less similar chemical properties but different physical properties. The different forms of the element are called allotropes. Allotropy is due to the difference in the arrangement of atoms in solid state. Allotropes may be crystalline or amorphous In which of the following all the atoms are not sp^(3) hybridization

    A
    Diamond
    B
    Carborundum
    C
    Crystalline silicon
    D
    Quartz

  • A: Elements along a period possess different chemical properties . R: The electronic confiuration of valence shell of any two elements in a period is not same .

    A
    A' and 'R' are correct and 'R' is correct reason for 'A'
    B
    A' and 'R' are correct but 'R' is not a correct reason for 'A'
    C
    A' is correct but 'R' is wrong .
    D
    A' is wrong but 'R' is correct

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