Download App

Study Of Acids, Bases and Salts — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryStudy Of Acids, Bases and Salts3 Marks
Question
Explain, why a universal indicator is preferred to acid-base indicators.
✓

Answer

Universal indicators are preferred to acid-base indicators because these give different colours in different $P^H$ ranges. A solution containing a drop of universal indicator is matched against a standard colour to find the $P^H$ of the solution.
$P^H$ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Colour of universal inducator   Red   Pink   Yellow   Green   Blue   Indigo   Violet  

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[3 Mark Question Answer]" from Study Of Acids, Bases and Salts→Study Of Acids, Bases and Salts — all question types→Chemistry STD 10 question papers→ICSE Board STD 10 question papers→ICSE Board question paper generator→

Similar questions

Write the equations of the reactions which take place at the cathode and anode when acidified water is electrolyzed.
→
Draw the structure of isomers of butane and write their IUPAC names.
→
Give composition and uses of the following alloys. Mention the reason for its use.
Magnalium
→
State how the following conversions can be carried out :
(i) Ethyl chloride to ethyl alcohol.
(ii) Ethyl chloride to ethene.
(iii) Ethene to ethyl alcohol.
→
Metal X is found in nature as its sulphides XS. It is used in the galvanization of iron articles. Identify the metal X. How will you convert this sulphide ore into the metal? Explain with equations.
→
Explain the following :
(a) Why are the wooden shelves on which concentrated sulphuric acid bottles kept, stained black?
(b) Why is concentrated sulphuric acid always added to water and not water to concentrated sulphuric acid? Why does the mixture get hot?
→
(a) Calculate the number of moles and the number of molecules present in $1.4 \ g$ of ethylene gas. What is the volume occupied by the same amount of ethylene?
(b) What is the vapour density of ethylene?
→
From the equation for burning of hydrogen and oxygen $2 H _2+ O _2 \longrightarrow 2 H _2 O$ (Steam)
Write down the number of mole (or moles) of steam obtained from 0.5 moles of oxygen.
→
Sulphuric acid used in the preparation of $HCI$ and $HNO_3$? Give equations in both cases.
→
What is the difference between : An alkali and a base?
→