Properties of Matter Practice Questions
Thanaweya Amma (Egypt) · Thanaweya Physics · 147 free MCQs with instant results and detailed explanations.
147
Total
47
Easy
77
Medium
23
Hard
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Sample Questions from Properties of Matter
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
What is the primary characteristic of solids that distinguishes them from liquids?
A.
Solids have a definite shape.
B.
Solids can flow easily.
C.
Solids fill the entire container.
D.
Solids have a lower density than liquids.
Show Answer & Explanation
Correct Answer: A
Solids maintain a definite shape due to the closely packed arrangement of their particles, making them rigid. This is a key difference from liquids, which do not have a fixed shape and take the shape of their container.
Q2
Easy
A 200 g block of ice at 0°C is placed in 1 liter of water at 20°C. What will be the final temperature when thermal equilibrium is reached, assuming no heat loss to the surroundings?
A.
Approximately 10°C
B.
Approximately 20°C
C.
Approximately 0°C
D.
Approximately 15°C
Show Answer & Explanation
Correct Answer: D
When the ice melts, it absorbs heat from the water, causing the water temperature to decrease. Eventually, the system reaches thermal equilibrium around 15°C, as the heat lost by the water equals the heat gained by the melting ice.
Q3
Easy
Which of the following best describes the term 'viscosity' in fluids?
A.
The ability of a fluid to resist deformation.
B.
The measure of a fluid's density.
C.
The ability of a fluid to flow easily.
D.
The measure of a fluid's internal friction.
Show Answer & Explanation
Correct Answer: D
Viscosity is defined as the measure of a fluid's internal friction, which affects its flow. A higher viscosity means the fluid resists flow more than a fluid with lower viscosity.
Q4
Medium
What happens to the density of a substance when it is heated and expands?
A.
Density increases
B.
Density decreases
C.
Density remains the same
D.
Density fluctuates unpredictably
Show Answer & Explanation
Correct Answer: B
When a substance is heated, it typically expands. Since density is defined as mass per unit volume, if the volume increases while the mass stays the same, the density must decrease.
Q5
Medium
A 500 g sample of a material occupies 200 cm³. What is the density of the material?
A.
2.5 g/cm³
B.
3.0 g/cm³
C.
4.0 g/cm³
D.
2.0 g/cm³
Show Answer & Explanation
Correct Answer: A
Density is calculated by dividing mass by volume. Here, 500 g divided by 200 cm³ equals 2.5 g/cm³.
Q6
Medium
Which of the following statements about elastic properties of materials is correct?
A.
Elastic materials always return to their original shape.
B.
All materials are elastic under all conditions.
C.
Elastic limit is the point where a material can deform permanently.
D.
Only metals exhibit elastic properties.
Show Answer & Explanation
Correct Answer: C
The elastic limit is defined as the maximum extent to which a solid may be stretched without permanent alteration of size or shape. Beyond this limit, the material deforms permanently.
Q7
Medium
If the volume of a gas is doubled at constant temperature, what happens to its pressure according to Boyle's Law?
A.
Pressure doubles
B.
Pressure halves
C.
Pressure remains constant
D.
Pressure quadruples
Show Answer & Explanation
Correct Answer: B
Boyle's Law states that pressure and volume are inversely proportional at constant temperature. Thus, doubling the volume results in halving the pressure.
Q8
Hard
A metal beam of length 2 m is subjected to a tensile force of 10,000 N. If the Young's modulus of the metal is 200 GPa, calculate the extension of the beam. (Assume the cross-sectional area is 0.01 m²)
A.
0.01 m
B.
0.02 m
C.
0.005 m
D.
0.002 m
Show Answer & Explanation
Correct Answer: D
The extension can be calculated using the formula: Extension = (Force × Length) / (Young's Modulus × Area). Plugging in the values gives us: (10,000 N × 2 m) / (200 × 10^9 N/m² × 0.01 m²) = 0.002 m.
Q9
Hard
A block of metal with a mass of 500 grams is submerged in water. If the density of the metal is 8 g/cm³, what is the volume of the metal block?
A.
62.5 cm³
B.
40 cm³
C.
80 cm³
D.
100 cm³
Show Answer & Explanation
Correct Answer: A
To find the volume of the metal block, use the formula: Volume = Mass / Density. Here, Mass = 500 g and Density = 8 g/cm³. So, Volume = 500 g / 8 g/cm³ = 62.5 cm³.
Q10
Hard
A gas occupies a volume of 2.0 L at a pressure of 1.0 atm. If the pressure is increased to 3.0 atm at constant temperature, what will be the new volume of the gas?
A.
0.67 L
B.
1.0 L
C.
1.5 L
D.
2.5 L
Show Answer & Explanation
Correct Answer: A
Using Boyle's Law (P1V1 = P2V2), we can rearrange it to find V2: V2 = P1V1 / P2. Here, P1 = 1.0 atm, V1 = 2.0 L, and P2 = 3.0 atm. So, V2 = (1.0 atm * 2.0 L) / 3.0 atm = 0.67 L.
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Properties of Matter — Thanaweya Amma (Egypt) Thanaweya Physics Practice Questions Online
This page contains 147 practice MCQs for the chapter Properties of Matter in Thanaweya Amma (Egypt) Thanaweya Physics. The questions are organized by difficulty — 47 easy, 77 medium, 23 hard — so you can choose the right level for your preparation.
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