Q. Retention volume can be obtained by finding the product of which of the following parameters?

View solution

Q. Retention factor is also known as the capacitance factor.

View solution

Q. What must be the value of the selectivity factor?

View solution

Q. Which of the following is the distance that the solute moves while undergoing one partition?

View solution

Q. Which of the following conditions will cause the efficiency of the column to increase?

View solution

Q. Which of the following is the expression for Eddy diffusion in the column, if ‘γ’ represents obstruction factor, ‘dₚ’ represents particle diameter, ‘Dₘ’ represents Solute diffusion co-efficient and ‘λ’ represents function for packing uniformity?

View solution

Q. Which of the following is the expression for longitudinal diffusion in the column, if ‘γ’ represents obstruction factor, ‘dₘ’ represents particle diameter, ‘Dₘ’ represents Solute diffusion co-efficient and ‘λ’ represents function for packing uniformity?

View solution

Q. In gas-liquid chromatography, when films are used in the interior of the capillary column, then what is the value of Eddy diffusion?

View solution

Q. For an unpacked coated capillary column, the obstruction factor takes which of the following values?

View solution

Q. Base line resolution is achieved when degree of resolution/separation is ______

View solution

Q. Which of the following equations give the expression for plate number, N when ‘tR’ is the adjusted retention time and ‘Wb’ is the width at the base of the peak which is equal to 4 standard deviations.

View solution

Q. It is more difficult to measure the width at half peak height than the base width in the detector output.

View solution

Q. The solute, while moving in the column is always in equilibrium with both the stationary phase and the mobile phase.

View solution

Q. For the separation of which of the following substances, Gas-solid chromatography is being used?

View solution

Q. Which of the following is not a feature of carrier gas used in gas chromatography?

View solution

Q. Which of the following is the disadvantage of hydrogen, which can be used as carrier gas in gas chromatography?

View solution

Q. Which of the following is the disadvantage of helium, which can be used as carrier gas in gas chromatography?

View solution

Q. Which of the following is the disadvantage of nitrogen, which can be used as carrier gas in gas chromatography?

View solution

Q. Slow injection of large samples leads to band broadening and loss of resolution.

View solution

Q. In which of the following methods are liquid samples injected into the column in gas chromatography?

View solution