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The stone whose crushing strength is least, is
The stone whose crushing strength is maximum, is
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Choke crushing (in case of a Jaw crusher) compared to free crushing
For crushing of solids, the Rittinger's law states that the work required for crushing is proportional to
H উচ্চতায় অবস্থিত একটি বেলুন থেকে একটি পাথর ছেড়ে দিলে তা । উচ্চতায় অবস্থিত একটি হেলানো তনের উপর আছড়ে পড়ে। হেলানো শুলকে আঘাতের পর পাথরটির বেগ আনুভূমিক হয়। h/H এর মান কত হলে পাথরটি ভূমিকে স্পর্শ করতে সর্বোচ্চ সময় নিবে? (A stone falls from a balloon at a height of H above the ground and hits an inclined plane in its path at a height of h. After impact, the velocity of the stone becomes horizontal. What should be the value of hill so that the stone will take maximum time to reach the ground?)
A good building stone should not absorb water more than
For a good building stone, its specific gravity should the greater than
The building is built of stone. Here 'stone' is a/an -
Crushing strength of a first class brick should not be less than