Question
Perspiration cools the body
becauseSolution
Perspiration cools the body because evaporation requires latent heat. The heat from the body is absorbed to convert sweat into vapor, thereby cooling the skin. Information Booster:
- Latent heat of vaporization is the energy required to change liquid to vapor.
- Sweating is controlled by the hypothalamus.
- High humidity reduces evaporation and cooling efficiency.
A sum of money grows to Rs. 7,500 in 5 years and Rs. 8,250 in 7 years under simple interest. What is the original principal amount?
- Two successive discounts of 25% and 10% is equivalent to a single discount of how much percentage?
- Calculate the area of the triangle enclosed by the line 3x+6y=18, the x-axis, and the y-axis.
- The cost price of a product is Rs. 400. The shopkeeper marks it 25% above the cost price and then offers a discount of 10%. Calculate the overall gain or l...
Amit purchased an article and marked it 60% above the cost price and sold it after giving a discount of 15% for Rs. 1530. What will be the selling price...
A product is bought for Rs. 1,800. The shopkeeper tags it at 25% above the cost price and offers a discount of Rs. 200 at the time of sale. What is the ...
- A 220 metres long train, travelling at 60 km/h crosses a platform in 30 seconds. What is the length of the platform?
- 'N' is the largest three-digit number which leaves 5 as a remainder when divided by 6, 9, and 15. What is the smallest number that needs to be added to 'N'...
- If a ten-digit number 57a61395z2 is divisible by 72, then find the number of possible values of ‘a’.
- A merchant made a profit of Rs. 600 on selling a gadget. Had the cost price been Rs. 400 lower and the selling price Rs. 900 more, the profit would have be...