Pharmaceutical Analysis PYQs – Set 82
Subject : Pharmaceutical Analysis
1621. The base peak in EIMS of acetophenone is:
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1622. Magnetron is used to generate:
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1623. In a 200 MHz NMR spectrometer, a molecule shows two doublets separated by 2 ppm. The observed coupling constant is 10 Hz. The separation between these two signals and the coupling constant in a 600 MHz spectrometer will be, respectively:
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1624. Which of the following is NOT a source used in Mid Infrared Spectrophotometer?
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1625. As per Arrhenius theory, pseudo base is a substance that ______ concentration of the solution:
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1626. Mercapto benzothiazole in rubber chemistry helps the process of:
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1627. Inulin on complete hydrolysis gives:
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1628. Which of the following is a polar aprotic solvent?
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1629. On the surface of Pd, hydrogen exists as:
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1630. Bragg’s equation 2d sinθ = nλ will have no solution if:
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1631. Which of the following functional groups is likely to be present in a molecule that has peaks the IR at strong, broad peak at 1630-1820 cm-1 but does not have peaks at 3200-3650 or 1000-1250 cm-1?
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1632. Which of the following bonds gives rise to an absorbance at approximately 2700-3300 cm-1 in the infrared spectrum?
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1633. In reverse phase HPLC, molecules with lower _______ polarity elute first, and molecules with _______ polarity elute last
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1634. One part per million is the same as
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1635. In p-nitrophenyl acetate where will the C=O stretching bond appear in IR spectrum
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1636. The most widely used theory for calculating zeta potential from experiments was developed by
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1637. Which one of the following compounds will display only two bands, both singlets, in its 1H NM spectrum
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1638. In PMR spectrum, two signals occur at 2.1 and 2.3 ppm by a spectrometer operating at 200 MHz. What is the frequency difference between their resonances in Hz?
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1639. A compound that shows positive iodoform test is
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1640. What will be the operating frequency for 13C NMR if 1H NMR operating frequency is 300 MHz for 7 Tesla instrument
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