Advertisements
Advertisements
Question
Blue litmus is added to two test tubes A and B containing dilute HCl and NaOH. Answer respectively. In which test tube a colour change will be observed? State the colour change and give its reason.
Solution
Test tube A contains dil. HCl and test tube B contains dil. NaOH. On adding blue litmus Answer to both the test tubes, the colour of the test tube A will change from blue to red. This is because HCl is acid and acids turn blue litmus to red.
APPEARS IN
RELATED QUESTIONS
What is meant by scattering of light? Use this phenomenon to explain why the clear sky appears blue or the Sun appears reddish at sunrise.
With the help of a labelled diagram, explain why the sun appears reddish at the sun-rise and the sun-set.
Which colour of the spectrum has
longest wavelength,
Which light has the longer wavelength : red light or blue light?
Name some everyday objects:
which reflect all the colours in sunlight
Draw a neat and labelled diagram of the experimental set up for observing the scattering of light in a colloidal solution of sulphur to show how the sky appears blue, and the sun appears red at sunrise and sunset.
What is the colour of the clear sky during day time? Give reason for it.
In the atmosphere which colour of light gets scattered the least?
The bluish colour of water in deep sea is due to ____________.
Which of the following statements is correct regarding the propagation of light of different colours of white light in the air?
