………….. is a homogeneous mixture.
- ASand + water
- BFlour + water
- ✓Salt + water
- DOil + water
Answer: C.
View full solution →Question types
Composition of Matter question types
147 questions across 12 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
147
Questions
12
Question groups
5
Question types
01
MCQ
11 Q→02Write the following Statement Is True Or False. & Write True Statement.
10 Q→03Answer the following in one sentece.
61 Q→04Answer the following questions in detail.
10 Q→05Fill In The Blanks.
10 Q→06complete the Graph/Table.
4 Q→07Answer the following question.
10 Q→08Match The Columns/pair.
3 Q→09Answer the following question.
7 Q→10Find the odd one out.
6 Q→11Distinguish Between.
6 Q→12Give Scientific Reason.
9 Q→Sample Questions
Composition of Matter questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
…………… is a complex compound.
- AGlucose
- BBlue vitriol
- ✓Chlorophyll
- DSoda
Answer: C.
View full solution →The property by which some solids maintain their shape even when subjected to external forces is called ………. .
- Aelasticity
- Bfluidity
- ✓rigidity
- Dplasticity
Answer: C.
View full solution →When a liquid is poured from one container to another, its shape may change, but its volume ………….. .
- Aincreases
- Bdecreases
- ✓remains the same
- Dnone of them
Answer: C.
View full solution →Valency of carbon is 4 and that of oxygen is 2. From this, we understand that there are …………. chemical bond/bonds between the carbon atom and one oxygen atom in the compound- carbon dioxide.
- A1
- ✓2
- C3
- D4
Answer: B.
View full solution →All the gases present together constitute a single phase.
The strength of intermolecular forces is weak in the liquid state.
An atom forms as many chemical bonds with other atom as its valency.
Copper sulphate is a mixture.
A suspension does not scatters light.
What is meant by valency of an element?
What is meant by molecular formula?
Classify the following into solution, suspension and colloids:
Milk, sand in water, lemonade, smoke, oxygen in water.
Milk, sand in water, lemonade, smoke, oxygen in water.
Classify the following into homogeneous solution and heterogeneous solution?
Soda water, potassium permanganate solution, milk, alcohol in water, ink solution, wheat flour in water.
Soda water, potassium permanganate solution, milk, alcohol in water, ink solution, wheat flour in water.
Define colloid.
State the different types of solutions. Give one example.
State the characteristics of a solution.
What is meant by a solvent?
OR
Define solvent. Give two examples.
OR
Define solvent. Give two examples.
What is meant by complex compounds? Give two examples.
What is meant by an organic compound? Give two examples.
The intermolecular force is …………….. in the gaseous state.
…………… is a mixture of water, lactose, fats and proteins.
When all the components of a mixture form one phase, it is called ………….. .
Bronze contains atoms of the elements ……………. and ………….. .
A colloid is a ………………. .
Complete the table:
Complete the table:
Complete the table:
Chemical composition of some matter is given in the following table. Identify the main type of matter from them.
State the characteristics of a suspension.
What is meant by a solute?
OR
Define solute. Give two examples.
OR
Define solute. Give two examples.
Write the composition of the following materials by means of chemical formulae and classify them accordingly.
Write any two characteristics of a mixture.
Liquids have fluidity and they do not have a definite shape. Explain.
| Column I | Column II |
| 1. Sea water | a. Solid in solid |
| 2. Vinegar | b. Solid in liquid |
| 3. Air | c. Liquid in liquid |
| 4. Bronze | d. Gas in liquid |
| 5. Chlorinated water | e. Gas in gas |
| Column 1 | Column II |
| 1. Milk | a. Alloy |
| 2. Lemonade | b. Colloid |
| 3. Sand and water | c. Solution |
| 4. Brass | d. Suspension |
| Column I | Column II |
| 1. Potassium dichromate | a. Complex compound |
| 2. Cyanocobalamine | b. Element |
| 3. Air | c. Compound |
| 4. Silver | d. Mixture |
Deduce the molecular formulae of the compound obtained from the following pairs of elements by the cross multiplication method.Question a.
H (Valency 1) and O (Valency 2)
Question b.
Fe (Valency 2) and S (Valency 2)
Question c.
The valencies of the atom $H , O$ and N are 1,2 and 3 respectively. The molecular formulae of these gaseous elements are $H _2, O _2$ and $N _2$ respectively. How many chemical bonds are there in each of these molecules?
View full solution →H (Valency 1) and O (Valency 2)
Question b.
Fe (Valency 2) and S (Valency 2)
Question c.
The valencies of the atom $H , O$ and N are 1,2 and 3 respectively. The molecular formulae of these gaseous elements are $H _2, O _2$ and $N _2$ respectively. How many chemical bonds are there in each of these molecules?
Give two examples of each of the following:
- Phase
- Homogeneous matter
- Heterogeneous matter
- Homogeneous mixture
- Heterogeneous mixture
- Solution
- Suspension
- Colloid.
State the characteristics of a colloid.
Ca (Valency 2) & O (Valency 2)
C (Valency 4) & O (Valency 2)
Hydrogen, sodium, potassium, carbon.
Sugar, salt, baking soda, blue vitriol.
Water, mercury, bromine, petrol.
Milk, lemon juice, carbon, steel.
Hydrogen, hydrogen peroxide, carbon dioxide, water vapour.
Colloidals and Suspension:
Compound and mixture:
Element and Compound:
Solids and Gases:
Liquids and Gases:
Milk is a colloid.
A potassium permanganate solution in water is a homogeneous mixture, while a mixture of oil and water is a heterogeneous mixture.
Air is a mixture.
Water is a compound.
Hydrogen is an element.
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