Arrange the following electro-magnetic radiations in ascending order of their frequencies : (i) Microwave (ii) Radiowave (iii) X-rays (iv) Gamma rays. Write two uses of any one of these.

Arrange the following electro-magnetic radiations in ascending order o

1.	Arrange the following electro-magnetic radiations in ascending order of their frequencies : (i) Microwave (ii) Radiowave (iii) X-rays (iv) Gamma rays. Write two uses of any one of these.
Answer» Given electromagnetic radiations in ascending order of their frequencies are Radiowave, Microwave , X-rays, Gamma rays. Uses of Microwave : (i) Microwaves are used in Radar system for aircraft navigation. (ii) Microwaves are used in microwave ovens for cooking purpose.

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(i) Arrange the following compounds in an increasing order of basic strength : `C_(6)H_(5)NH_(2), C_(6)H_(5)N(CN_(3))_(2), (C_(2)H_(5))_(2)NH and CH_(3)NH_(2)` (ii) Arrange the following compounds in a decreasing order of `pK_(b)` values: `C_(2)H_(5)NH_(2), C_(6)H_(5)NHCH_(3), (C_(2)H_(5))_(2) NH and C_(6)H_(5)NH_(2)`
Rerrange the following in an increasing order of their basic strengths: `C_(6)H_(5)NH_(2),C_(6)H_(5)N(CH_(3))_(2),(C_(6)H_(5))_(2)` NH and `CH_(3)NH_(2)`.
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Arrange the following electro-magnetic radiations in ascending order of their frequencies : (i) Microwave (ii) Radiowave (iii) X-rays (iv) Gamma rays. Write two uses of any one of these.

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