Скачать или смотреть CSCA Chemistry MCQ: How to Purify Impure Solid Salt?

Looking for a K-12 school education in China for your child? Visit https://alifaedtech.com/schools
Alifa Education Services helps non-Chinese families choose from over 800 top schools.
Why China?
1. World-class education (IB, A-levels, Chinese National Curriculum)
2. Learn the Chinese language and culture
3. Excellent STEM programs
4. Safe environment
Get a free consultation today and give your child an amazing educational experience! Contact Alifa Education Services now!
30 Minute Meeting with Alifa Edu Services: https://tidycal.com/publisher/standar...

📱Message Alifa Education Service on
WhatsApp. https://wa.me/message/KWJQYT3Q5DPJO1
✉ Telegram: https://t.me/+8613522515549
💬Viber: viber://add?number=8613522044626




Purification of substances is a core concept in chemistry and a very frequent MCQ topic in exams such as CSCA, SSC, HSC, and various admission tests.

In this video, we solve an important CSCA Chemistry Mock Examination MCQ:

“To purify impure solid salt, which technique should be used?”

This question tests your understanding of separation and purification techniques, especially those related to solid substances.

🔬 Correct Concept Explained (Exam-Oriented)

When a solid substance like salt contains impurities, the most effective purification technique is recrystallization.

✔ Correct Answer: Recrystallization

In recrystallization:

The impure solid is dissolved in a suitable solvent

The solution is filtered to remove insoluble impurities

On cooling, pure crystals of the solid separate out

🧪 Why Recrystallization Is Used

Best method for purifying solid substances

Based on difference in solubility at different temperatures

Produces pure crystals

Widely used in laboratories and industries

❌ Why Other Options Are Incorrect

Distillation → Used for separating liquids or liquid–solid mixtures

Chromatography → Used to separate components of mixtures (often liquids or gases)

Sublimation → Used only if the solid sublimes (e.g., camphor, ammonium chloride)

These methods are not suitable for purifying common solid salts.

🎯 Who Should Watch This Video?

CSCA exam candidates

SSC & HSC Chemistry students

Admission test aspirants

Students learning purification techniques

Anyone confused about recrystallization

📌 Exam Shortcut Tip

If the question mentions:

Impure solid

Purification

👉 Think immediately: Recrystallization

👍 Support & Engagement

If this video helped you:

Like the video

Share with friends

Subscribe for daily CSCA Chemistry MCQs

Comment to request a full chapter-wise MCQ series


#CSCAChemistry
#ChemistryMCQ
#Recrystallization
#PurificationOfSolids
#SeparationTechniques
#ChemistryExam
#SSCchemistry
#HSCchemistry
#AdmissionTestPreparation
#ChemistryBasics