Download App

Water — CHEMISTRY STD 9 — Question

ICSE BoardEnglish MediumSTD 9CHEMISTRYWater1 Mark
Question
Hot saturated solution of sodium nitrate forms crystals as it cools. Why?
✓

Answer

Solubility of sodium nitrate decreases with a fall in temperature. Thus, when a hot saturated solution of sodium nitrate cools, it forms crystals as it separates from the solution.

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 "[1 Mark Question Answer]" from Water→Water — all question types→CHEMISTRY STD 9 question papers→ICSE Board STD 9 question papers→ICSE Board question paper generator→

Similar questions

Identify the gases from the observations:
A greenish yellow gas having a pungent and suffocating smell. It turns moist blue litmus paper red and then bleaches it.
→
What is the term defined below?
A bond formed by transfer of electron(s).
→
What are the following group known as?
Group 17
→
Name and state the following with reference to the elements of the first three periods of the periodic table.
Valency of elements in Group 14 and 15.
→
Explain why $3 \mathrm{He}_2$ and $3 \mathrm{H}_1$ are not considered as isotopes.
→
Write the balanced chemical equation of the following reaction.
sulphur + nitric acid→ sulphuric acid + nitrogen dioxide + water.
→
Hydrogen may be prepared in the laboratory by the action of a metal on an acid.
Which of the metals copper, zinc, magnesium or sodium would be the most suitable?
→
What are the causes of acid rain?
→
Define the terms:
Relative molecular mass
→
State the number of valence electrons in (a) alkali metals and (b) halogens.
→