Ritik can cover a certain distance in 18 hours if he walks at the rate of 10 km/hr. If he covers the same distance by bus at the rate of 45 km/hr, then what is the time (in hours) taken by him?
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Which of the following types of cement is used in the construction of underground structures like tunnels? निम्नलिखित में से किस प्रकार के सीमेंंट का उपयोग सुरंगों जैसी भूमिगत संरचनाओं का निर्माण में किया जाता है?
In which medieval book the first reference of the trade posts? व्यापारिक चौकियों का उल्लेख सर्वप्रथम किस मध्यकालीन ग्रन्थ से मिलता है?
While watching 3D movies in the theater, we have to wear special glasses because:
Which of the following gases is considered as atmospheric pollutant? निम्नलिखित में से किस गैस को वायुमंडलीय प्रदूषक माना जाता है?
Explanations:
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