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A student adds a few drops of the univer...

A student adds a few drops of the universal indicator solution to a dilute solution of sodium hydroencarbnonate taken in a test tube. Which of the following colour would he observe?

A

blue

B

green

C

mustard

D

yellow

Text Solution

Verified by Experts

The correct Answer is:
A
NA
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A student adds a few drops of the universal indicator to a solution o dilute hydrochloric acid in the way shown here. What will be the colour change he observe ?

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Knowledge Check

  • A student adds a few drops of the universal indicator to a solution of dilute hydrochloric acid in the way shown here. He would observe that the colour of the solution changes from colourless to:

    A
    red
    B
    yellow
    C
    violet
    D
    green

  • A student added a few drops of the universal indicator to a solution of dilute hydrochloric acid in the way as shown here. He observed that the colour of the solution changes from colourless to

    A
    red
    B
    yellow
    C
    violet
    D
    green

  • On adding a few drops of universal indicator solution to three unknown colourless solutions P,Q, and R taken separately in three test-tubes shown in the diagrams, a student observed the changes in colour as green in solution P red in solution Q and violet in solution R . The decreasing order of the pH of the three solutions is:

    A
    `PgtQgtR`
    B
    `RgtPgtQ`
    C
    `QgtPgtR`
    D
    `RgtQgtP`

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    On adding a few drops of universal indicator to three unknown colourless solutions (P), (Q) and (R ) taken separately in three test tubes shown in the following diagrams, a student observed the changes in colour as green in (P ), red in (Q) and violet in (R ). What will be the decreasing order of pH ?

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