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Which of the following is not correct ?...

Which of the following is not correct ?

A

Robert Brown discovered the cell.

B

Schleiden and Schwann formulated the cell theory.

C

Virchow explained that cells are formed from pre-existing cells.

D

A unicellular organism carries out its life activities within a single cell.

Text Solution

Verified by Experts

Robert Brown discovered the cell.
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  • Which of the following is the correct IUPAC name ?

    A
    3-ethyl-4, 4-dimethylheptane
    B
    4, 4-dimethyl-3-ethylheptane
    C
    5-ethyl-4, 4-dimethylheptane
    D
    4, 4-bis(methyl)-3-ethylheptane

  • Which of the following are not correct for carbon compounds ?

    A
    They are good conductors of electricity.
    B
    They are non-conductors of electricity.
    C
    They possess strong intemolecular attractive forces.
    D
    They possess weak intermolecular attractive forces.

  • Which of the following is the correct order of size of the given species :

    A
    `I gt I^(-)gt I^(+)`
    B
    `I^(+) gt I^(-) gt I`
    C
    `I gt I^(+) gt I^(-)`
    D
    `I^(-) gt I gt I^(+)`

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