Calcium channel blockers can be divided into three classes based on their chemical structure. Which of the following is NOT a class of calcium channel blockers?
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- \( \text{Aryloxyethanolamine} \)
- \( \text{Phenylalkylamines} \)
- \( \text{Dihydropyridines} \)
- \( \text{Benzothiazepines} \)
The Correct Option is A
Solution and Explanation
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Given below are two statements:
Statement I: In the oxalic acid vs KMnO$_4$ (in the presence of dil H$_2$SO$_4$) titration the solution needs to be heated initially to 60°C, but no heating is required in Ferrous ammonium sulphate (FAS) vs KMnO$_4$ titration (in the presence of dil H$_2$SO$_4$).
Statement II: In oxalic acid vs KMnO$_4$ titration, the initial formation of MnSO$_4$ takes place at high temperature, which then acts as catalyst for further reaction. In the case of FAS vs KMnO$_4$, heating oxidizes Fe$^{2+}$ into Fe$^{3+}$ by oxygen of air and error may be introduced in the experiment.
In the light of the above statements, choose the correct answer from the options given below:
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