Consider the reaction 2A+B+3C=P+2Q starting with 3mol of A, 2mol of B and 6mol of C, number of moles of products P and Q would respectively be
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Answer:
172. An Electro magnetic radiation of wavelength 242 nm is just sufficient to ionise a sodium atom. Calculate the ionisation energy of sodium in kJ/mol ? 1) 494.5 2) 594.5 3) 694.5 4) 794.5 173. When a metal is irradiated with light of frequency 4.0 x 1016 s-1 the photo electrons emitted had six times the K.E as the K.E of photo electron emitted when the metal was irradiated with light of frequency 2.0 x 1016s -1 . The calculate the critical frequency of the metal 1) 2.0 x 1016 s-1 2) 1.6 x 1016 s-1 3) 3.0 x 1016 s-1 4) 4.2 x 1016 s-1 174. In photo electric effect, if the energy required to over come the attractive forces on the electron (work function) of Li, Na and Rb are 2.41eV, 2.3 eV and 2.09eV respectively, the work function of “K” could approximately be in eV 1) 2.52 2) 2.2 3) 2.35 4) 2.01 175. In photoelectric effect, the energy of the photon striking a metallic surface is 5.6 x 10-19 J. The kinetic energy of the ejected electrons is 12.0 x 10-20 J. The work function is 1) 6.4 x 10-19 J 2) 6.8 x 10-19 J 3) 4.4 x 10-19 J 4) 6.4 x 10-20 J 176. An Electro magnetic radiation of wavelength 484nm is just sufficient ionise a sodium atom. Calculate the ionisation energy of sodium in kJ/mol approximately ? 1) 494.5 2) 246.9 3) 989.0 4) 794.5 177. Suppose 10-17 J of energy is needed by the interior of human eye to see an object. How many photons of green light 550nm are needed to generate this minimum amount of energy ? 1) 14 2) 28 3) 39 4) 42 178. The ratio of the energies of two different radiations whose frequencies are 3 x 1014 Hz and 5 x 1014 Hz is 1) 3 : 5 2) 5 : 3 3) 3 : 1 4) 5 : 1 179. Which one of the following frequency of radiation (in Hz) has a wavelength of 600nm 1) 2 x 1013 2) 5 x 1016 3) 2 x 1014 4) 5 x 1014 180. What is the energy of photons that corresponds to a wave number of 5 x 10-5 m-1 1) 99.384 x 10-30 J 2) 993.84 x 10-30 J 3) 9.9384 x 10-30 J 4) 0.99384 x 10-30 J vitannitlo evi vaste avi answer cheyyandi
Explanation:
In humans, transportation of oxygen nutrients,
hormone and other substances to tissue, COD2
to the lungs and waste products to the
kidneys is carried out by a well-defined
Circulatory System. In lower organisms
material is transported by diffusion.
Circulatory System:
It comprises of the heart, blood vessels, blood,
lymphatic vessels, lymph, which together
serve to transport materials, throughout the
body.
Components of the circulatory system in
higher animals are
1. Blood
2. Pumping organ- "Heart
3. System of blood vessels for distribution
and collection of blood consisting of
arteries, veins and capillaries.
The advantage of the universal indicator is that it displays a variety of colors over the whole pH scale. This makes it possible to determine an approximate pH of a solution over a range from 1-14. whereas, A commonly used acid-base indicator is litmus.Jan 9, 2016