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प्रश्न
The litmus paper or the litmus solution is obtained from ________ plant
(A) Moss
(B) Lichen
(C) Rose
(D) Hibiscus
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उत्तर
Lichen
APPEARS IN
संबंधित प्रश्न
When phenolphthalein is added to NaOH, the colour of the solution will become _________.
- colourless
- red
- pink
- yellow
From which plant is litmus paper or litmus solution obtained?
- Moss
- Rose
- Hibiscus
- Lichen
Write a word equation and then a balanced equation for the reaction taking place when:
Dilute hydrochloric acid reacts with iron filings.
Complete and balance the following chemical equation:
\[\ce{NaOH_{(aq)} + HCl_{(aq)} ->}\]
What is a neutralisation reaction? Explain with an example.
A solution reacts with marble chips to produce a gas which turns lime water milky. The solution contains ______.
A first-aid manual suggests that vinegar should be used to treat wasp stings and baking soda for bee stings. What does this information tell you about the chemical nature of:
wasp stings?
Write the chemical formula of sodium carbonate decahydrate.
What would be the colour of litmus in a solution of sodium carbonate?
What happens when a solution of sodium hydrogencarbonate is heated? Write equation of the reaction involved.
Explain why, sodium hydrogencarbonate is used as an antacid.
Which of the following statements is true for acids?
A salt may be ______.
Which acid is present in milk?
Are all acids corrosive in nature? Name a few acids which are non-corrosive and may be part of our food.
Take a clean test tube with a holder and pour some dilute hydrochloric acid. Add a few pieces of magnesium ribbon pieces slowly. What do you observe? Now show a burning match stick near the mouth of the test tube. Do you hear any sound? The gas burns with a pop sound. From this, it is observed that hydrogen gas has been formed due to the reaction between acid and metal.
What is the correct procedure for mixing acid and water? Why?
“All acids contain one or more hydrogen atoms, but not all substances containing hydrogen are acids.” Support this statement with examples.
The formula of bleaching powder is ______.
Consider the following salt:
NH4X
If in salt NH4X, X is nitrate, then its solution will give what colour with a universal indicator? Why?
