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11 AM JEE Mains 2020 - Chemistry | Periodic Table, s-block & p-block elements - 30 Days Course

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Three Carnot engines operate in series between a heat source at a temperature T_1 = 600 K and heat sink at temperature T_4 = 100K (see figure). There are two other reservoirs at temperature T_2 " and " T_3 as shown, with T_1 gt T_2 gt T_3 gt T_4 The three engines are equally efficient if:

The diagram below represents the students who study Physics, Chemistry and Mathematics. Study the diagram and identify the region which represents the students who study Physics and Mathematics but not Chemistry. 1)T 2) P+T+S 3) V 4)P+T+S+R+U+V 5)None of these

If 18 t h and 11 t h term of an A.P. are in the ratio 3\ :2 , then its 21 s t and 5t h terms are in the ratio 3\ :2 (b) 3\ :1 (c) 1\ :3 (d) 2\ :3

An element has atomic mass 93 g mol^(-1) and density 11.5 g cm^(-3) . If the edge length of its unit cell is 300 pm, identify the type of unit cell.

An element with atomic mass 93 g mol^(-1) has density 11.5 g cm^(-3) . If the edge length of its unit cell is 300 pm, identify the type of unit cell.