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...

Rupee !! History Of Rupee????

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if Standing closer to the train, why we are pushing towards the train????

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