Download App

Water — CHEMISTRY STD 9 — Question

ICSE BoardEnglish MediumSTD 9CHEMISTRYWater1 Mark
Question
Define the term:
Soft water
✓

Answer

water that is free from dissolved salts of such metals as calcium, iron, or magnesium, which form insoluble deposits such as appear as scale in boilers or soap curds in bathtubs and laundry equipment

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 "Do as Directed." from Water→Water — all question types→CHEMISTRY STD 9 question papers→ICSE Board STD 9 question papers→ICSE Board question paper generator→

Similar questions

Write the formula and balance the equations:
Butane $\left(\mathrm{C}_4 \mathrm{H}_{10}\right)$ +Oxygen -> Carbon dioxide + Water
→
Write the formula of the salts :
Calcium bicarbonate:
→
What do you understand by the terms?
Nucleus
→
Write balanced equations when the substances are heated strongly:
Iodine I2(s)
→
Write the formula and balance the equations:
Limewater + Carbon dioxide $->$ Calcium carbonate + Water
→
Classify the reactions.
$\mathrm{BaCl}_2(\mathrm{aq})+\mathrm{Na}_2 \mathrm{SO}_4(\mathrm{aq}) \rightarrow \mathrm{BaSO}_4(\mathrm{~s})+2 \mathrm{NaCl}(\mathrm{aq})$
→
Write balanced equations and stale experimental condition:
Iron reacts with water.
→
What do you understand by the terms?
Mass number
→
Write the formula of the salts :
Potassium zincate:
→
Write balanced equations when the substances are heated strongly:
Ammonium chloride
→