MCQOPTIONS
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MCQOPTIONS
This section includes 26 Mcqs, each offering curated multiple-choice questions to sharpen your SRMJEEE knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Fissuring at corners of mouth and lips due to the deficiency of Vitamin B2 is called |
| A. | Pernicious anaemia |
| B. | Xerophthalmia |
| C. | Cheilosis |
| D. | Rickets |
| Answer» D. Rickets | |
| 2. |
Styrene dissolves well in |
| A. | Water |
| B. | Benzene |
| C. | Methanol |
| D. | Ethylacetate |
| Answer» C. Methanol | |
| 3. |
The reactions of alkenes are mainly |
| A. | Nucleophilic addition |
| B. | Nucleophilic substitution |
| C. | Free radical reactions |
| D. | Electrophilic additions |
| Answer» E. | |
| 4. |
A bond that undergoes heterolytic cleanage most readily is |
| A. | C-C |
| B. | O-H |
| C. | C-O |
| D. | C-H |
| Answer» C. C-O | |
| 5. |
The molecular mass of compound A is 168 g/mol. Its empirical formula is C4H4S. Find its molecular formula |
| A. | C4H4S |
| B. | C2H2S |
| C. | C8H8S2 |
| D. | C2H4S |
| Answer» D. C2H4S | |
| 6. |
In molisch test the presence of carbohydrates is confirmed by the formation of |
| A. | yellow precipitate |
| B. | scarlet red solution |
| C. | greenish yellow fluorescence |
| D. | red ring at the junction of two layers of liquids |
| Answer» E. | |
| 7. |
A reaction was found to be second order with respect to the concentration of carbonmonoxide. If the concentration of carbonmonoxide is doubled with everythig else kept the constant, the rate of reaction will |
| A. | increase by a factor of 4 |
| B. | double |
| C. | remain unchanged |
| D. | triple |
| Answer» B. double | |
| 8. |
The sum of the powers of the exponentials to which each concentration term is raised is defined as |
| A. | rate of the reaction |
| B. | molecularity of the reaction |
| C. | order of the reaction |
| D. | half life period |
| Answer» D. half life period | |
| 9. |
The chemical formula of rust is |
| A. | Fe2O3.xH2O |
| B. | FeO |
| C. | Fe(OH)2 |
| D. | FeO2.H2O |
| Answer» B. FeO | |
| 10. |
The reason for addition of catalyst in a reversible reaction at the beginning is |
| A. | to get the max concentration of reactants |
| B. | to increase the speed of attainment of equilibrium |
| C. | to alter the product concentration |
| D. | favour of forward reaction |
| Answer» C. to alter the product concentration | |
| 11. |
What is the conjugate base of OH- ? |
| A. | O2- |
| B. | O- |
| C. | H2O |
| D. | O2 |
| Answer» B. O- | |
| 12. |
The molal boiling point elevation constant for water is 0.510 K mol-1 kg. The boiling point of a solution made by dissolving 6.0g urea in 200g water is |
| A. | 100.255oC |
| B. | 100oC |
| C. | 0.255oC |
| D. | 99.1oC |
| Answer» B. 100oC | |
| 13. |
In the solubility expression p = KH x. the term 'KH' infers |
| A. | Daltons constant |
| B. | Henrys law constant |
| C. | Boltzmann constant |
| D. | Partial pressure of H2 |
| Answer» C. Boltzmann constant | |
| 14. |
The sign convention for work done by the system is ______ |
| A. | zero |
| B. | positive |
| C. | negative |
| D. | either positive or negative |
| Answer» D. either positive or negative | |
| 15. |
Which molecule has the largest dipole moment? |
| A. | HCl |
| B. | HI |
| C. | HBr |
| D. | HF |
| Answer» E. | |
| 16. |
Dipole moment of BeF2 is |
| A. | very low |
| B. | very high |
| C. | zero |
| D. | not definite |
| Answer» D. not definite | |
| 17. |
What is the meaning of the word 'atom'? |
| A. | dividable |
| B. | invisible |
| C. | hard particles |
| D. | not able to be divided |
| Answer» E. | |
| 18. |
Mean distance between atoms is in the range of |
| A. | 25 nm |
| B. | 2.5 nm |
| C. | 0.25 nm |
| D. | 0.025 nm |
| Answer» D. 0.025 nm | |
| 19. |
Beryllium has diagonal relationship with |
| A. | Li |
| B. | B |
| C. | Na |
| D. | Al |
| Answer» E. | |
| 20. |
The most electronegative and electropositive elements of the first period is/are |
| A. | H and He |
| B. | Na and Cl |
| C. | Li and F |
| D. | H and H |
| Answer» E. | |
| 21. |
In each period, the strongest oxidising behaviour is of a/an |
| A. | Alkali metal |
| B. | Nobel gas |
| C. | Halogens |
| D. | Chalcogen |
| Answer» D. Chalcogen | |
| 22. |
Which is an example of effusion? |
| A. | air slowly escaping from a pinhole in a tire |
| B. | the aroma of a cooling pie spreading across a room |
| C. | helium dispersing in to a room after a ballon pops |
| D. | oxygen and gasoline fumes mixing in an automobile carburetor |
| Answer» B. the aroma of a cooling pie spreading across a room | |
| 23. |
Which process can be explained by the kinetic-molecular theory? |
| A. | combustion |
| B. | oxidation |
| C. | condensation |
| D. | displacement reaction |
| Answer» D. displacement reaction | |
| 24. |
What is the value of gas constant R in Jmol-1 K-1 |
| A. | 82.1 |
| B. | 8.314x102 |
| C. | 8.314 |
| D. | 0.0821 |
| Answer» D. 0.0821 | |
| 25. |
Which of the following weight the least? |
| A. | 2.0 gram mole of CO2 |
| B. | 0.1 mole of sucrose (C12 H22 O11) |
| C. | 1 gram atom of calcium |
| D. | 1.5 mole of water |
| Answer» E. | |
| 26. |
Azidothymidine drug is used for treating ________ patients |
| A. | Diabetes |
| B. | AIDS |
| C. | Jaundice |
| D. | Tuberculosis |
| Answer» C. Jaundice | |