MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your AIIMS UG knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is a biodegradable polymer? |
| A. | Polythene |
| B. | Bakelite |
| C. | PHBV |
| D. | PVC |
| Answer» D. PVC | |
| 2. |
Secondar structure of proteins refers to |
| A. | mainly denatured proteins and structure of prosthetic group |
| B. | three dimensional structure, especially the bond between amino acid residue that are distant from each other in the polypeptide chain |
| C. | linear sequence of amino acid residues in the polypeptide chain |
| D. | regular folding ,atterns of continuous portions of the polypeptide chain |
| Answer» E. | |
| 3. |
The correct order of decreasing acid strength of trichloroacetic acid (A) trifluoroacetic acid (B), benzoic acid (C) and formic acid (D) is |
| A. | A>B>C>D |
| B. | A>C>B>D |
| C. | B>A>D>C |
| D. | B>A>C>D |
| Answer» D. B>A>C>D | |
| 4. |
The IUPAC name ht tertiary butyl iodide is |
| A. | 4iodobutane |
| B. | 2-indoburane |
| C. | 1-iodo-3-methyl propane |
| D. | 2.iodo-2-methyl propane |
| Answer» E. | |
| 5. |
The electronic configuration of actinides cannot be assigned with degree of certainty because of |
| A. | small energy difference between 5f and 6d levels |
| B. | overlapping of inner orbitals |
| C. | free movement of electrons over all the orbitals |
| D. | All of the above |
| Answer» B. overlapping of inner orbitals | |
| 6. |
The pH of 0.5 L of 1.0 M NaCI after the electrolysis for 965 s using 5.0 A current, is |
| A. | 1.0 |
| B. | 12.7 |
| C. | 13.0 |
| D. | 1.30 |
| Answer» D. 1.30 | |
| 7. |
If ethanol dissolves in water then which of the following would happen? |
| A. | Absorption of heat and contraction of volume |
| B. | liberation of heat and contraction of volume |
| C. | Absorption of heat and Increase in volume |
| D. | Liberation of heat and increase in volume |
| Answer» D. Liberation of heat and increase in volume | |
| 8. |
The Brownian motion is due to |
| A. | temperature fluctuation within the liquid phase |
| B. | attraction and repulsion between charges on the colloidal particles |
| C. | impact of the molecules of the dispersion medium on the colloidal particles |
| D. | convectional currents |
| Answer» D. convectional currents | |
| 9. |
MnO4 is of intense pink colour, though Mn is in +7 oxidation state. It is due to |
| A. | oxygen gwes colour to it |
| B. | charge transfer when Mn gives its electron to oxygen |
| C. | charge transfer when oxygen gives its electron to Mn making i Mn (+VI) |
| D. | presence of unpaired electrons |
| Answer» D. presence of unpaired electrons | |
| 10. |
The pH of the mixture obtained when equal volumes of N/10 NaOH and N/20 HCI are mixed, is |
| A. | 1.6 |
| B. | 12.4 |
| C. | 13.4 |
| D. | 10.8 |
| Answer» C. 13.4 | |