Consider the electromagnetic spectrum Which of the following wavelength regions
ID: 1073945 • Letter: C
Question
Consider the electromagnetic spectrum Which of the following wavelength regions has the potential to damage biological (e.g. DNA) molecules? Infra-red radiation Visible radiation Radio waves Ultraviolet radiation Identify the following solutions as: acidic basic neutral Liquid ammonia (NH_3 (aq)) Vinegar (CH_3COOH (I)) Potassium chloride (KCL (aq)) When sodium sulfate (Na_2SO_4) is dissolved in water. it forms the following icons: 2Na^+ and SO_4^2- Na_2^+ and SO_4^2- 2Na^+ and 4SO^2- Na^2+ and 4SO^2- The pH value of a solution indicates: The concentration of H^+ ions the concentration of OH^- ions the concentration of water All of the aboveExplanation / Answer
Uv radiation.
The shorter the wavelength, the more energetic the radiation, and the potential for harm is more.
Thus, among all DNA readily absorbs UV-B radiation.
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In aqueous solution, ammonia acts as a base, acquiring hydrogen ions from from H2O to give ammonium and hydroxide ions. NH3(aq) + H2O(l) NH4 + (aq).
Vinegar contains acetic acid, so it comes under the category of acid.
KCl is the salt as it is formed reaction of strong base KOH and strong acid HCl.so, a neutral product.
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Na2SO4 + H2O---------> 2Na+ + HSO4- +OH--------->2Na+ +SO42-+ h2O
Ans wer is A.
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pH is the negative logarithm of H + ions concentrtaion.
So, A is the answer