why tires are also black???

Have you ever noticed ?? Why tires are only black color??? why all the corporate tire colors in the whole world are black.

We all know that the tire is made of rubber and The natural rubber is gray in color. But the natural rubber is not so strong and it gets damaged very quickly. So we mix carbon in the rubber And this process is called vulcanization Carbon rubber tires can run easily for up to one lakh kilometer, And due to the black color of carbon tire turns into black color. Another reason behind the black color of the tire is that black color protects tires from ultraviolet rays.

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Why 1 dollar is not equal to 1 rupee (1 डॉलर 1 रुपये के बराबर क्यों नहीं होता है?)

दोस्तों इंडियन होने के नाते आपकी भी मेरी तरह एक Wish होगी कि काश एक डॉलर एक रुपए के बराबर हो जाए क्योंकि सच में अगर ऐसा होता है तो चीजें हमारे लिए बहुत सस्ती हो जाएंगी जैसे ऐसे 700 rs का i Phone और बहुत सी ब्रांडेड चीजें जो बहुत-बहुत सस्ती लेकिन ऐसा क्यों नहीं होता है कि $1 एक रुपए के बराबर हो जाए तो चलिए इसे देखते हैं इसके कुछ प्रमुख कारण हैं व्यापार :- दोस्तों जैसे हमें पता है कि भारत एक विकसित नहीं बल्कि विकासशील देश है जो विकसित होने की तरफ हैं लेकिन विकसित नहीं है तो हमें बहुत सी चीजों के लिए दूसरे देशों पर निर्भर रहना पड़ता है| और हम दूसरे देशों के साथ व्यापार करते हैं जैसे कि चीनी चाय और बहुत सारी ऐसी चीज है जो हम दूसरे देशों के साथ व्यापार करते हैं अब अगर एक रुपए की कीमत $1 के बराबर कर देते हैं तो जो भी देश हम से खरीदते हैं तो उनके लिए सामान बहुत महंगा हो जाएगा जैसे की चाय का व्यापार भारत और श्रीलंका दोनों करते हैं उदाहरण के लिए अगर 1 किलो चाय की कीमत 100 रुपए है तो जो दूसरे देश चाय खरीदते हैं उसे भारत से चाय खरीदने के लिए $100 देने पड़ेंगे क्यों...

What is CC of the Engine ??

Friends, 90 out of 100 people can tell how Much CC are their bikes? But only 5 or 10% of them can tell what a CC means. Some people call it is Weight, some people say power. So let's know today that what is CC of engine? If you were calculate volume in mathematics in your childhood, then you would remember what was the unit of Volume? The unit of volume is cm3, mm3, m3 means that the cube of the unit means the cubic centimeter. Now we know that the Cubic Centimeter is the unit of Volume. Now we see that what CC is in the engine, we all know that a cylinder is inserted inside the engine, which mixes gasoline and air. There are two volumes in the cylinder, Total Volume and Swift Volume .Swift Volume is the Volume in which the Piston is travels upwards or downwards. And in Swift Volume the engine makes Actual Power. So If the CC is given in the engine 110cc, 120cc, 150cc, 250cc, etc it means the Swift Volume of that particular engine is 110 cm3, 120 cm3, 150 c...

Rupee !! History Of Rupee????

Rupa is a Sanskrit word. Which means that the silver coin, which we make a knock-on peat. The bar-tar system was run in Indian Valley Civilization. Bar-tar system means to take another thing in exchange for anything. As if we have more rice and we also need wheat, then we can take some wheat for the second instead of some of our rice. But in the year 1540, the Sher Shah launched Rupai for the first time. In which 1 rupee means 1 silver coin which was equal to 178 wheat grains But after the first World War, silver and gold prices increased, then the British government denominated the Indian rupee. In which now 1 rupee means 16 aana, which was equal to 64 paise. all these copper were made of nickel. But after 1961 only the rupee was mad...

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