Free NCERT Solutions, Notes & MCQs for Class 9–12

Is Matter Around Us Pure-True/False

Your Progress 0 / 25 attempted

Q 01 / 25

A pure substance contains only one type of particle.

✔ True ✘ False

Q 02 / 25

Mixtures can have variable composition.

✔ True ✘ False

Q 03 / 25

Air is a pure substance.

✔ True ✘ False

Q 04 / 25

Salt dissolved in water forms a homogeneous mixture.

✔ True ✘ False

Q 05 / 25

A compound can be separated by physical methods.

✔ True ✘ False

Q 06 / 25

Alloys are mixtures.

✔ True ✘ False

Q 07 / 25

In a suspension, particles settle down on standing.

✔ True ✘ False

Q 08 / 25

Elements and compounds are both considered pure substances.

✔ True ✘ False

Q 09 / 25

Mixtures always have fixed boiling and melting points.

✔ True ✘ False

Q 10 / 25

Filtration can separate salt from water.

✔ True ✘ False

Q 11 / 25

Colloids are heterogeneous in appearance.

✔ True ✘ False

Q 12 / 25

Components of a mixture retain their properties.

✔ True ✘ False

Q 13 / 25

Evaporation is suitable for separating volatile solutes from non-volatile solvents.

✔ True ✘ False

Q 14 / 25

Sugar is a compound.

✔ True ✘ False

Q 15 / 25

Milk is an example of a solution.

✔ True ✘ False

Q 16 / 25

A homogeneous mixture has the same composition throughout.

✔ True ✘ False

Q 17 / 25

Suspension particles are too small to be seen without a microscope.

✔ True ✘ False

Q 18 / 25

A solution always contains a solute and a solvent.

✔ True ✘ False

Q 19 / 25

Tap water is a pure substance.

✔ True ✘ False

Q 20 / 25

Distillation is a process meant for separating mixtures based on boiling points.

✔ True ✘ False

Q 21 / 25

All mixtures are either homogeneous or heterogeneous.

✔ True ✘ False

Q 22 / 25

Sand in water forms a suspension.

✔ True ✘ False

Q 23 / 25

A compound contains elements combined in a fixed proportion.

✔ True ✘ False

Q 24 / 25

Mixtures always have uniform appearance.

✔ True ✘ False

Q 25 / 25

Physical methods can separate the components of a mixture.

✔ True ✘ False

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ACADEMIA AETERNUM तमसो मा ज्योतिर्गमय · Est. 2025

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Free NCERT Solutions, Notes & MCQs for Class 9–12 | Academia Aeternum

Free NCERT Solutions, Notes & MCQs for Class 9–12 | Academia Aeternum — Complete Notes & Solutions · academia-aeternum.com

🎓 Class 0 📐 📖 NCERT ✅ Free Access 🏆 CBSE · JEE

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Is Matter Around Us Pure-True/False

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