InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Explain the terms ‘heat’ and ‘temperature’ |
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Answer» 1. If we stand close to fire, we feel warm. 2. When a warm object is placed close to a cooler object, heat energy moves from the warmer object to the cooler one until both objects attain the same temperature. 3. Often we think that heat and temperature are the same things. This is wrong. 4. Temperature is a measure of the heat energy in a body which indicates the ability of a body to give heat to another body or absorb heat from another body. 5. We use thermometers to measure temperature. |
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| 52. |
What are the properties of mercury? |
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Answer» Properties of Mercury: 1. Its expansion is uniform. (For equal amounts of heat it expands by equal lengths.) 2. It is opaque and shining. 3. It does not stick to the sides of the glass tube. 4. It is a good conductor of heat. 5. It is easily available in pure state. |
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| 53. |
Is there any difference in temperature with variation of time or place? |
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Answer» There is difference in temperature with variation of time or place. |
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| 54. |
Do you find any difference in temperature of air in shadow and in the sun?Measure temperature of air using a thermometer. What will you do to keep a thermometer in close contact with air? |
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Answer» 1. The temperature of air will be more as it receives heat directly from the sun and from reflected radiations. 2. The temperature in the shadow will be relatively less as only reflected radiant heat reaches there. |
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| 55. |
How do you get hot water in winter? |
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Answer» By heating water, I get hot water in winter. |
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| 56. |
Give examples of conversion of energy from one form to another. |
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Answer» 1. Different kinds of energies can be converted to heat. 2. In the same way heat energy can be converted to other forms of energy. 3. We have heard that in a thermal power station, heat energy is converted to electrical energy. 4. In a steam engine, heat energy is converted to mechanical energy which helps in moving the engine. 5. In electrical heater electrical energy, in gas stove chemical energy and in solar heaters solar energy are converted to heat. |
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| 57. |
Where is the temperature of your district headquarters recorded? |
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Answer» The temperature of the district headquarters is recorded in the district meteorological department. |
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| 58. |
Which season would be the best for visiting the following places and why? Goa, Chikhaldara, Chennai, Darjeeling, Ellora, Agra. |
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Answer» Goa, Chennai, Ellora and Agra in the winter season. Chikhaldara and Darjeeling in the summer season. |
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| 59. |
………….. prevents falling of mercury level on its own A) Capillary B) CapC) Knob D) Kink |
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Answer» Correct option is D) Kink |
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| 60. |
On clinical thermometer Fahrenheit scale 1°F subdivided into ………….. A) 5 B) 10 C) 8 D) 4 |
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Answer» Correct option is A) 5 |
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| 61. |
Celcius scale on clinical thermometer ranges from ……………. to 45 degrees. A) 34 B) 35C) 36 D) 40 |
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Answer» Correct option is B) 35 |
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| 62. |
Fahrenheit scale on clinical thermometer ranges 94 to ………….. degrees. A) 100 B) 104 C) 106 D) 108 |
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Answer» Correct option is D) 108 |
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| 63. |
How will the rays fall between:i. 0° and 23° 30′ North and South?ii. 23° 30′ and 66° 30′ North and South?iii. 66° 30′ and 90° North and South? |
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Answer» i. Perpendicular rays. ii. Slant rays. iii. Extreme slant rays. |
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| 64. |
Laboratory thermometer used in A) Laboratory B) Furnaces C) TheatersD) All of these |
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Answer» Correct option is D) All of these |
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| 65. |
Write the properties of alcohol. |
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Answer» Properties of Alcohol: 1. It can record very low temperatures. 2. Its expansion per degree Celsius rise in temperature is very large. 3. It can be coloured brightly and hence is easily visible. |
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| 66. |
Which of the following is used to know the temperature in infants? A) Thermister thermometer B) Clinical thermometer C) Laboratory thermometer D) Six minimum and maximum thermometer |
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Answer» A) Thermister thermometer |
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| 67. |
Ravi wants to know the temperature of boiling water with clinical thermometer. What may happen? Guess? A) It will burst B) Glass tube will expand C) It will shrink D) No change |
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Answer» Correct option is A) It will burst |
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| 68. |
-7° C temperature is 0° C. A) Greater B) LesserC) Equal D) Very less |
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Answer» Correct option is B) Lesser |
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| 69. |
Kink is present inA) Lab thermometer B) Six’s max. & min. thermometer C) Clinical thermometer D) Gas thermometer |
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Answer» Correct option is C) Clinical thermometer |
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| 70. |
Ravi takes a soapnut seed and rubs it on a stone. What do you observe in it? A) Heat energy is converted into Mechanical energy B) Mechanical energy is converted into Heat energy C) Mechanical energy is converted into Chemical energy D) Chemical energy is converted into Mechanical energy |
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Answer» B) Mechanical energy is converted into Heat energy |
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| 71. |
Name of thermometer commonly used to measure body temperature of children is A) Six’s maximum and minimum thermometer B) Clinical thermometer C) Laboratory thermometer D) Alcohol thermometer |
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Answer» Correct option is B) Clinical thermometer |
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| 72. |
What liquids are used in this instrument?A) Alcohol B) Mercury C) Both A and B D) Water |
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Answer» Correct option is C) Both A and B |
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| 73. |
The following scales are marked on the clinical thermometer A) Both millimeter and centimeter B) Only Celsius C) Only fahrenheit D) Both Celsius and fahrenheit |
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Answer» D) Both Celsius and fahrenheit |
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| 74. |
We use this to measure the temperature of boiling water. A) Clinical thermometer B) Six maximum-minimum thermometer C) Faboratory thermometer D) Digital thermometer |
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Answer» Correct option is C) Faboratory thermometer |
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| 75. |
Chemical energy converts into heat by A) Gas stove B) ThermometerC) Bulb D) Electric Heater |
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Answer» Correct option is A) Gas stove |
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| 76. |
The following one converts the electrical energy into heatA) Solar heaterB) Electrical heater C) Gas stove D) Coal iron box |
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Answer» Correct option is B) Electrical heater |
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| 77. |
Heat energy con verts in to electricity by A) Gas stove B) Electric heater C) Hot plate D) Thermal station |
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Answer» Correct option is D) Thermal station |
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| 78. |
Electrical energy is converted into heat by A) Gas stove B) Thermometer C) Bulb D) Electric Heater |
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Answer» Correct option is D) Electric Heater |
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| 79. |
Heat energy converts into mechanical energy by A) Steam engine B) Aeroplane C) Rocket D) All of these |
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Answer» Correct option is A) Steam engine |
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| 80. |
The Six maximum and minimum thermometer measured temperatures of A) Night B) Week C) Day D) All of these |
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Answer» Correct option is C) Day |
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| 81. |
Temperature is a measure of A) Heat B) Light C) SoundD) Electric power |
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Answer» Correct option is A) Heat |
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