Daily Practice Problems undefined Elements, Compounds and Mixtures

Question 1:

Which among the following is solid-liquid heterogeneous mixture?

(d) ammonium chloride + water [Level: Moderate]

Question 2:

Virat took a mixture having 3 components. He carried out paper chromatography to separate components. After, drying the filter paper he observed 3 spots as shown in the diagram given below.

Select the correct statement from below given statements:

(a) Component B is less soluble in mobile phase than component C

(b) Component B is more soluble in mobile phase than component C

(d) Component A is less soluble in mobile phase than component B [Level: Difficult]

Question 3:

Give one word answer for the following:

The solid particles which remain on the filter paper after filtration. [Level: Easy]

Question 4:

You are working in the lab & you want to separate liquid-liquid homogeneous mixture having 2 components A & B. A has boiling point 60⁰C whereas B has boiling point 98⁰C. Which of the following technique you can use to separate the two liquids?

(a) Only Distillation

(b) Evaporation

(d) Only Fractional distillation [Level: Difficult]

Question 5:

Given below are some statements related to mixtures. Select the correct statement.

(a) A mixture contains particles of two or more pure substances which may be present in it in definite ratio.

(b) Composition of mixture is fixed.

(d) Original properties of pure substances from which mixture is formed are lost in the mixture. [Level: Difficult]

Question 6:

Gopal categorised some elements given to him into metals, non-metals & metalloids as you can see below in the table. But there are some mistakes committed by him while categorisation. Find out the mistakes & rewrite the table having correct categorisation of elements.

Metal	Non-metal	Metalloid
Sodium, Mercury, Zinc, Silicon, Nitrogen, Germanium	Hydrogen, Oxygen, Fluorine, Iron, Sulphur, Potassium	Boron, Calcium Antimony, Tellurium, Chlorine, Arsenic

[Level: Difficult]

Question 7:

Give any 3 applications of chromatography. [Level: Moderate]

Question 8:

Give one word answer for the following:

The process by which 2 miscible liquids are separated. [Level: Easy]

Question 9:

Give below is experimental setup for carrying out distillation. Label the inlet & outlet of Liebig condenser. [Level: Moderate]

Question 10:

Which among the following is liquid-liquid homogeneous mixture?

(a) oil + water

(b) kerosene + water

(d) carbon tetrachloride + water [Level: Moderate]

Question 11:

Which among the following is symbol of Mercury?

(a) M

(b) Me

(d) Hg [Level: Moderate]

Question 12:

Which among the following can be used as stationary phase in paper chromatography?

(a) water

(b) alcohol

(d) acetone [Level: Easy]

Question 13:

In which of the following technique, soluble solid is only recovered from homogeneous solid-liquid mixture?

(a) Solvent extraction method

(b) Fractional distillation

(d) Evaporation [Level: Moderate]

Question 14:

Which among the following is separation technique used to separate salt from ammonium chloride?

(a) Evaporation

(b) Sublimation

(d) Distillation [Level: Easy]

Question 15:

You are given a mixture of water & carbon tetrachloride. Which of the following technique you would use to separate them?

(a) By using separating funnel

(b) Magnetic separation

(d) Filtration [Level: Moderate]

Question 16:

Molecular formula of glucose is

(a) C₆H₁₁O₆

(b) C₆H₁₂O₆

(d) C₆H₁₁O₇ [Level: Moderate]

Question 17:

Composition is fixed in case of

(a) only compounds

(b) mixtures

(d) both compounds & elements [Level: Easy]

Question 18:

In which of the following technique, both solid (soluble) & liquid is recovered from homogeneous solid-liquid mixture?

(a) Sublimation

(b) By using separating funnel

(d) Evaporation [Level: Moderate]

Question 19:

Sachin took a mixture of iron filings & sulphur. Accidently he added salt to this mixture. How will you help Sachin to separate the mixture? [Level: Difficult]

Question 20:

Give 3 points of difference between mixtures & compounds. [Level: Moderate]

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All About Daily Practice Problems on ICSE 8 Chemistry Elements, Compounds and Mixtures NCERT Chapter 3

Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on ICSE 8 Chemistry Elements, Compounds and Mixtures NCERT Chapter 3 useful.

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