Advertisements
Advertisements
प्रश्न
Fill in the cross word given in figure with the help of the clues provided.
Across
(2) The solution which does not change the colour of either red or blue litmus.
(4) Phenolphthalein gives pink colour in this type of solution.
(7) Colour of blue litmus in lemon juice.
Down
(1) It is used to test whether a substance is acidic or basic.
(3) It is a natural indicator and gives pink colour in basic solution.
(5) Nature of ant’s sting.
(6) It is responsible for the increase in temperature during a neutralisation reaction.
Advertisements
उत्तर
Across
2. Neutral
4. Base
7. Red
Down
1. Indicator
3. Turmeric
5. Acidic
6. Heat
APPEARS IN
संबंधित प्रश्न
When a solution is added to a cloth strip treated with onion extract, then the smell of onion cannot be detected. State whether the given solution contains an acid or a base.\
Name a sodium compound which is a constituent of many dry soap powders.
Write the chemical formula of ammonium chloride. Explain why an aqueous solution of ammonium chloride is acidic in nature? Illustrate your answer with the help of a chemical equation.
Define a base.
Give the reaction of acid with nitrates. State the conditions under which they react.
Acid mixed with base forms ______.
Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed
State whether the following statement is true or false. Correct the false statement.
A compound if acidic will turn all indicators red.
While playing in a park, a child was stung by a wasp. Some elders suggested applying paste of baking soda and others lemon juice as remedy. Which remedy do you think is appropriate and why?
______ contain one or more replaceable hydrogen atoms.
