11. Consider the following statements:
(a) Both acids and bases change colour of all indicators.
(b)
If an indicator gives a colour change with an acid, it does not give a
change with a base.
(c) If an indicator changes colour with a base, it does not change colour
with an acid.
(d)
Change of colour in an acid and a base depends on the type of the
indicator.
Which of these statements are correct?
(i) All four (ii) a and d (iii) b. c and d (iv) only d
“The great aim of education is not knowledge, but action.” “For discipline, as well as for guidance, science is of chiefest value. In all its effects, learning the meaning of things is better than learning the meaning of words.
The great aim of education is not knowledge, but action.” “For discipline, as well as for guidance, science is of chiefest value. In all its effects, learning the meaning of things is better than learning the meaning of words.”
7. Statement (A): Solids have definite shape and volume. Statement (B): The density of solids is generally high. Statement (C): Liquids have fluidity but not rigidity. a) All the above statements are correct c) A, B are correct and C is in correct b) All the above statements are incorrect d) A. B are incorrect and C is correct.
