Properties of Matter and their Measurement - Class 11 Chemistry MCQ

This set of Class 11 Chemistry Chapter 1 Multiple Choice Questions & Answers (MCQs) focuses on “Properties of Matter and their Measurement”.

1. Which of the following may not be a physical property?
a) Odor
b) Color
c) Density
d) Composition
View Answer

Answer: d
Explanation: Composition is a chemical property because we can’t find a compound’s composition just by looking at it. We need to run some chemical tests to find out. Odor, color, and density are physical properties, as we can find them just by looking at them.

2. The observation of __________ properties needs a chemical change to occur.
a) Chemical
b) Physical
c) Extrinsic
d) Intrinsic
View Answer

Answer: a
Explanation: Chemical properties are combustibility, composition, reactivity with acids & bases, etc. So to observe them chemical change has to occur. Combustibility can be known only when extinguished with fire. Composition is a chemical property because we can’t find a compound’s composition just by looking at it. We need to run some chemical tests to find out etc

3. Candela is the S.I. unit of _____
a) Luminous intensity
b) Thermodynamic temperature
c) Amount of substance
d) Electric current
View Answer

Answer: a
Explanation: Candela is an S.I. unit of luminous intensity with symbol cd. It’s termed a source emitting monochromatic radiation at frequency 540 x 10¹² Hertz with the radiant intensity of 1/683 watt per steradian provided in the same direction.

4. How many scientific fundamental quantities are given S.I. units?
a) 5
b) 7
c) 3
d) 9
View Answer

Answer: b
Explanation: There are seven scientific fundamental quantities i.e. Length(l), Time(t), Mass(m), Electric current(I), Thermodynamic temperature(T), Amount of substance(n) & Luminous intensity(I_v). They can’t be expressed as other quantities i.e. independent.

5. What is the symbol of the amount of substance’s S.I. unit?
a) K
b) s
c) mol
d) kg
View Answer

Answer: c
Explanation: As the S.I. unit of the amount of substance is a mole, it’s denoted by “mol”. A mole is defined as many elementary entities as there are atoms in 0.012 kilograms of carbon-12.

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6. What are the multiples for the prefixes yocto, atto respectively?
a) 10^-24, 10^-18
b) 10^-9, 10^-15
c) 10^-15, 10^-24
d) 10^-24, 10^-21
View Answer

Answer: a
Explanation: Yocto is 10 power (-24) and atto is 10 power (-18). These are the standard prefixes used in S.I. system.

7. 1Litre = _______ m³.
a) 1000
b) 0.001
c) 1
d) 10
View Answer

Answer: b
Explanation: As 1 litre is 1000ml
1000ml = 1000cm³
1000cm³ = 0.001m³
Therefore 1L = 0.001m³.

8. What is the difference in units between Kelvin and centigrade scales of temperature?
a) 212.15
b) 32
c) 298
d) 273.15
View Answer

Answer: d
Explanation: Kelvin = Centigrade + 273.15. So the difference between in units between Kelvin and centigrade scales of temperature is 273.15.

9. What is the human body temperature in Fahrenheit?
a) 212
b) 98.6
c) 273.15
d) 32
View Answer

Answer: b
Explanation: Our human body’s temperature is 37°C = 98.6°F = 310K. It’s a known fact and is the same for every human.

10. Convert 40°C to °F.
a) 104K
b) 313°F
c) 104°F
d) 313K
View Answer

Answer: c
Explanation: 1 Fahrenheit = 9/5 Centigrade + 32.
9(40)/5 + 32 = 9 x 8 + 32 = 104°F.

11. S.I. unit of density is kg.m^-3.
a) False
b) true
View Answer

Answer: b
Explanation: As density is the ratio of mass and volume, it’s S.I. unit is kg.m^-3, as the S.I. unit of mass is kg and the S.I. unit of volume is m³.

Sanfoundry Global Education & Learning Series – Chemistry – Class 11.

To practice all chapters and topics of class 11 Chemistry, here is complete set of 1000+ Multiple Choice Questions and Answers.

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