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Matter In Our Surroundings

Question
CBSEENSC9005702
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The Rajdhani Express travels from Mumbai to Delhi a distance of 1384 km. It starts from Mumbai at 4.00 p.m. and reaches Delhi at 9.00 a.m., the next day. What is its average speed?

Solution
Total space Distance space travelled space equals space 1384 space km Total space time space taken space equals space 17 space hours therefore space space space Average space speed space equals space fraction numerator Total space distance space travelled over denominator Total space time space taken end fraction space equals space 1384 over 17 space equals space 81.4 space km divided by hr

Some More Questions From Matter In Our Surroundings Chapter

Convert the following temperatures to Kelvin scale

25°C

What is the physical state of water at

100 °C

For any substance, why does the temperature remain constant during the change of state ?

Suggest a method to liquify atmospheric gases.

Convert the following temperatures to Kelvin scale.

35°C

Give reason for the following observations.

Naphthalene balls disappear with time without leaving any solid.

Give reason for the following observations.

We can get the smell of perfume sitting several metres away.

What is the physical state of water at

a) 25°C
b)00C
c)1000C

What is the physical state of water at
0°C

What is the physical state of water at
100°C

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