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The type of igneous rocks which are formed midway between volcanic and plutonic rocks, are known as ________
Carbonaceous rocks which produce coal and of belong to the category of rocks called
The rate of Alteration of pressure filters is
The device attached to the steam chest for preventing explosions due to excessive internal pressure of steam is called
If the original day sediments are subjected to high temperature and pressure, they successively change into rocks, the correct order of which is ________
The scales form in heat exchanges after a period of operation and provide additional resistance to heat transfer with some heat transfer coefficient . The reciprocal of this scale heat transfer coefficient is called .
The rocks which are formed due to cooling of magma at a considerable depth from earth's surface are called
The rocks which are formed due to cooling of magma at a relatively shallow depth from the earth's surface are called
The rocks which are formed due to pouring of magma at the earth's surface are called
An item costs 90% of its original price. If Tk. 90 is added to the discount price, the cost of the item will be equal to its original price. What is the original price of the item?