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1 : How do the molecules in a solid behave?

1 : (a) Move randomly

2 : (b) Vibrate about their mean positions

3 : (c) Rotate and vibrate randomly at their own positions

4 : (d) Move in a straight line from hot to cold ends.

2 : Temperature of a substance is:

1 : (a) the total amount of heat contained in it

2 : (b) the total number of molecules in it

3 : (c) degree of hotness or coldness

4 : (d) dependent upon the intermolecular distance

3 : What type of motion is of the molecules in a gas?

1 : (a) Linear motion

2 : (b) Random motion

3 : (c) Vibratory motion

4 : (d) Rotatory motion

4 : Which one is a better choice for a liquid-in-glass thermometer?

1 : (a) Is colourless

2 : (b) is a bad conductor

3 : (c) Expand linearly

4 : (d)wets glass

5 : Water is not used as a thermometric

1 : (a) colourless

2 : (b) Is a bad conductor

3 : (c)non-linear explansion

4 : (d) Wets glass

6 : In Kelvin scale, the temperature corresponding to melting point of iceis

1 : (a) zero

2 : (b) 32

3 : (c)-273

4 : (d) +273

7 : Heart is the:

1 : a) total kinetic energy of the molecules

2 : (b) the internal energy

3 : (c) work done by the molecules

4 : (d) the energy in transit

8 : A thermometer has a narrow capillary tube so that it:

1 : (a) quickly responds to temperature changes

2 : (b) can read the maximum temperature

3 : (c) gives a large change for a given temperature rise

4 : (d) can measure a large range of temperature temperature?

9 : One disadvantage of using alcohol in a liquid-in-glass thermometer.

1 : (a) it has large expansivity

2 : (b)it has low freezing point

3 : (c) it wets the glass tube

4 : (d)its pxplansion is limear.

10 : The temperature which has the same value on Celsius and Fahrenheit scale is:

1 : (a)-40

2 : (b) +40

3 : (c) +45

4 : (d) -45

11 : Which thermometer is most suitable for recording rapidly varying temperature?

1 : (a) Thermocouple thermometer

2 : (b) Mercury-in-glass laboratory thermometer

3 : (c) Alcohol-in-glass thermometer

4 : (d) Mercury-in-glass clinical thermometer

12 : How many properties matter have?

1 : two

2 : Three

3 : Four

4 : Five

13 : A gas in which most of the atoms are ionized containing positive ions and electrons in known as:

1 : Matter

2 : Thermal

3 : Plasma

4 : Internal energy

14 : In kelvin scale , the lower fixed point is labeled as:

1 : 0

2 : 100

3 : 273

4 : 373

15 : In Fahrenheit scales. the lower foxed point is labeled as:

1 : 32

2 : 100

3 : 212

4 : 0

16 : Which refers to the direct to the direct proportional relationship between the temperature and scale reading accuses entire range of measurement?

1 : Linearity

2 : rang

3 : Sensitivity

4 : Thermocouple

17 : The difference between two fixed points in calcium as:

1 : 0

2 : 100

3 : 212

4 : -213-150C

18 : How many scale temperature have?

1 : One

2 : two

3 : three

4 : four

19 : For the exact measurement of the hotness of a substance we require an instrument called a :

1 : thermometer

2 : Celsius scale

3 : Fahrenheit scale

4 : Rang

20 : The sum of kinetic energy and potential energy of moleclues is known as:

1 : Internal energy

2 : Thermal energy

3 : External energy

4 : Heat energy

21 : in kelvin scale the upper fixed point is labor as:

1 : o

2 : 100

3 : 273

4 : 373

22 : Th value of absolute zero is:

1 : -260oC

2 : -283.15oC

3 : -2734.15oC

4 : -293oC

23 : Which factors increase the average kinetic energy of a particles in a substance?

1 : Decreasing the temperature

2 : increasing the temperature

3 : Increasing the temperature

4 : decreasing the temperature

24 : What is the freezing point of water on the Fahrenheit scale?

1 : OoF

2 : 32oF

3 : 1000F

4 : 212oF

25 : What is SL unit of heat?

1 : Joule

2 : Calorie

3 : Watt

4 : Kelvin

26 : Which refers to the span of the thermometer?

1 : Range

2 : Sensitivity

3 : Linearly

4 : Thermocouple

27 : Which physical property is increase is used in a liquid in gass thermometer?

1 : Expansion of a liquid with temperature

2 : thermal conductivity

3 : Electromagnetic radiation

4 : Change in electrical resistance

28 : Which pressure does not require a medium for heat transfer?

1 : Conduction

2 : Convection

3 : Radiation

4 : All require a medium

29 : A thermometer is evaluated its key charactericts which is correct?

1 : Sensitivity

2 : Range

3 : Linearity

4 : All of these

30 : Plasma differs from gasses because:

1 : plasma has a definite shape

2 : Plasma is made up to charged particles

3 : Plasma particles are tightly packed

4 : plasma has no limnetic no limnetic energy

31 : Which state of matter have definite shape and definite volume?

1 : Solids

2 : Liquids

3 : Gas

4 : Plasma

32 : The inter moleclues forces , in case of liquids is :

1 : Strong

2 : weak

3 : both

4 : none of these

33 : Which state of matter can be squeezed into smaller volume?

1 : Solids

2 : Liquids

3 : Gas

4 : Plasma

34 : What is the use of thermometer liquid is correct?

1 : It is visible

2 : It has low fresszing point

3 : It does not yet glass

4 : All of above

35 : The motion of moleclues may be:

1 : Vibration

2 : Rotational

3 : Linear

4 : All of these

36 : in Fahrenheit scales, the upper fixed point is labeled as:

1 : 32

2 : 200

3 : 212

4 : 0

37 : There exists a mutual force of attraction between the moleclues known as?

1 : Intermolecular forces

2 : Matter

3 : Cohesive forces

4 : Dipole- Dipole forces

38 : In Fahrenheit scales, the upper fixed point is labeled as:

1 : 100

2 : 0

3 : -273oC

4 : 180

39 : Plasma in known as a state of matter:

1 : First

2 : Second

3 : Third

4 : Fourth

40 : Which state of matter have a define shape volume?

1 : Strong

2 : Weak

3 : gas

4 : Plasma

41 : Moleclues are very close in a body of:

1 : Plasma

2 : solids

3 : Liquids

4 : gases

Physics 9th MCQs || Ilam Ghar