Hot and Cold Objects

Q.

He Is Too Weak To Walk ( Remove Too )

Q. Temperature is the measure of ___________ of an object.

1. hotness
2. coldness
3. (b) and (c) above.
4. heaviness

Q. If you take ice cold water in a glass tumbler, you will observe some water droplets on its outer surface. What can we infer from this?

1. Air contains nitrogen gas.
2. Air occupies space.
3. Air contains water vapour.
4. Air contains oxygen gas.

Q.

Which of the following temperature can be measured using a mercury thermometer?

1. $70°\mathrm{C}$

2. $500°C$

3. $–273°\mathrm{C}$

4. All of these

Q.

The hotness of an object is determined by its __________.

Q. In winters, blowing air on our hands makes them ___________.

1. cold
2. warm
3. wet
4. dry

Q. Blowing air onto a mirror makes it _______.

1. clean
2. hazy
3. cold
4. sticky

Q. is the measure of hotness or coldness of a substance.

1. Temperature
2. Warmth
3. Energy

Q. Scene 1: Blowing air on hand close to mouth.
Scene 2: Blowing air on hand far from mouth.
In which scene do you experience more warmth on your hands?

1. Scene 1
2. Scene 2
3. Both feel equally warm
4. Blowing air does not give warmth

Q. Blowing air onto a mirror makes it _______.

1. clean
2. hazy
3. cold
4. sticky

Q. Which of the following statements are correct regarding temperature of an object?

1. Hot objects have low temperature.
2. Hot objects have high temperature.
3. Cold objects have low temperature.
4. Cold objects have high temperature.

Q. Food is cooled down before eating to avoid __________ in our mouth.

1. cuts
2. bleeding
3. burns
4. infection

Q. Scene 1: Blowing air on hand close to mouth.
Scene 2: Blowing air on hand far from mouth.
In which scene do you experience more warmth on your hands?

1. Scene 2
2. Scene 1
3. Both feel equally warm
4. Blowing air does not give warmth

Q. Hot coffee and an ice cream are left in an open room.
Choose the correct observation after some time.

1. Temperature of ice cream decreases
2. Temperature of hot coffee decreases
3. Temperature of outside air increases
4. Temperature of room increases

Q.

Which among the following is the hottest substance?

1. Water at ${100}^{0}C$.

2. Steam at ${100}^{0}C$.

3. Mercury at ${100}^{0}C$.

4. All the above are equally hot.

Q. Which of the following option is true based on their temperature?

1. Ice cream < Water < Sun
2. Water < Ice Cream < Sun
3. Sun < Water < Ice cream
4. Sun < Ice Cream < Cold Water

Q. A hot object will cool down to , when left alone in a normal room.

1. room temperature
2. lowest temperature
3. hottest temperature

Q. Anshul accidently hits his head on the wall. He observes that his forehead is swollen. How will he get relief on the swollen area?

1. Placing warm towel on the swollen area
2. Pouring hot water over the swollen area
3. By rubbing stones around the swollen area
4. Putting sand over the swollen area

Q. Arrange the following in the order of increasing temperature.

1. An ice cream
2. Cold water
3. A cup of hot tea
4. The Sun

Q. Things that we should take care of while working in the kitchen are:

1. Use mittens or tongs to hold hot utensils.
2. Do not wear loose clothes and jewellery.
3. Keep a fire extinguisher nearby.
4. All of the above.

Q.

_______clothes absorb more heat than________clothes.

Q. Blowing air onto a mirror makes it _______.

Q. How do plasters help in recovering from fractures?

Q. The the temperature of a body, the hotter it is.

1. cooler
2. higher
3. lower

Q.

An instrument used to measure the temperature.

Q. A mirror turns hazy when a man blows air on it. Can you identify A and B?​

1. A is hot air, B is hot surface​
2. A is hot air, B is cold surface​
3. A is cold air, B is hot surface​
4. A is cold air, B is cold surface​

Q.

Pick the odd one.

1. Melting

2. boiling

3. temperature

4. evaporation

Q. _______ is placed over the eye to provide relief during redness of an eye.

1. Warm cloth
2. Sand
3. Ice
4. Hot water bag

Q.

The temperature of a body A is $60°C$ and the temperature of a body B is $122°F$. What will happen when they are in contact with each other?

1. The heat flows from A to B

2. The heat flows from B to A

3. They are in thermal equilibrium

4. Heat flows from A to B or B to A depending upon the surrounding temperature.

Q. Which of the following instruments can be used to measure how hot the day is?

1. Thermometer
2. Odometer
3. Barometer
4. Anemometer