MCQOPTIONS
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MCQOPTIONS
This section includes 41 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Solubility product of AgCl is 2.0 x 10-10 mol2 dm-6. Maximum Concentration of Ag+1 ions in the solution is__________________? |
| A. | 2.0 x 10-10 mol dm-3 |
| B. | 1.414 x 10-5 mol dm-3 |
| C. | 1.0 x 10-10 mol dm-3 |
| D. | 1.0 x 10-5 mol dm-3 |
| Answer» C. 1.0 x 10-10 mol dm-3 | |
| 2. |
Sodium is not observed in +2 oxidation state because of its__________________? |
| A. | high first ionization potential |
| B. | high second ioniation potential |
| C. | high ionic radius |
| D. | high electronegativity |
| Answer» C. high ionic radius | |
| 3. |
Silica gel and alumina are used as __________________? |
| A. | Mobile phase |
| B. | Stationary phase |
| C. | Mixed phase |
| D. | Single phase |
| Answer» C. Mixed phase | |
| 4. |
Solution with maximum concentration of solute at given temperature is called________________? |
| A. | Super saturated solution |
| B. | unsaturated solution |
| C. | saturated solution |
| D. | dilute solution |
| Answer» D. dilute solution | |
| 5. |
Size of molecule depends upon________________? |
| A. | Atomicity |
| B. | Shape of molecule |
| C. | Both A and B |
| D. | Difficult to predict |
| Answer» D. Difficult to predict | |
| 6. |
Tetrahydroborate ion is the source of_______________? |
| A. | proton |
| B. | H+ |
| C. | both A & amp, B |
| D. | H- |
| Answer» E. | |
| 7. |
Sodium benzoate and benzoic acid are mixed in equimolar ration to form buffer if pKa is 2 what will be the pH ? |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | any one |
| Answer» D. any one | |
| 8. |
Sommerfelds modification in Bohrs model is_______________? |
| A. | Orbit is cylindrical |
| B. | Orbit is elliptical |
| C. | Orbit is longitudinal |
| D. | Orbit is asymmetrical |
| Answer» C. Orbit is longitudinal | |
| 9. |
Solution of Na2SO4 will be_________________? |
| A. | basic |
| B. | acidic |
| C. | neutral |
| D. | cannot be presicted without data |
| Answer» D. cannot be presicted without data | |
| 10. |
nergy of atom in compound is___________________? |
| A. | . Higher than individual |
| B. | Lesser than individual |
| C. | No change |
| D. | Impossible to predict |
| Answer» C. No change | |
| 11. |
Shielding effect across the period_________________? |
| A. | Increases |
| B. | Decreases |
| C. | Can not be predicted |
| D. | Remains constant |
| Answer» E. | |
| 12. |
Substance which is found in dried up lakes of Tibet and California is_______________? |
| A. | Tincal |
| B. | Boric acid |
| C. | Calcium carbonate |
| D. | Colemanite |
| Answer» B. Boric acid | |
| 13. |
Selection of filter paper depends on size of particles to be________________? |
| A. | filtered |
| B. | dried |
| C. | decolorized |
| D. | decanted |
| Answer» B. dried | |
| 14. |
Stronger is the oxidizing agent greater is the___________________? |
| A. | Oxidation potential |
| B. | Redox potential |
| C. | e.m.f of cell |
| D. | standard reduction potential |
| Answer» E. | |
| 15. |
Ka |
| A. | Very strong base |
| B. | Very weak acid |
| C. | Very strong acid |
| D. | Very strong salt |
| Answer» C. Very strong acid | |
| 16. |
Sharing of 1 electron pair by one specie forms_________________? |
| A. | Single covalent bond |
| B. | Hydrogen bond |
| C. | Double covalent bond |
| D. | Coordinate covalent bond |
| Answer» E. | |
| 17. |
Table salt crystallizes with a______________________? |
| A. | Face centered cubic lattice |
| B. | body centered cubic lattice |
| C. | simple cubic lattice |
| D. | othorhombic lattice |
| Answer» C. simple cubic lattice | |
| 18. |
Special features of borate glass is that it is_________________? |
| A. | Heat resistant |
| B. | Low melting |
| C. | Used to prepare chemical garden |
| D. | Green in colour |
| Answer» B. Low melting | |
| 19. |
Soda lime is a mixture of____________________? |
| A. | CaO and KOH |
| B. | CaO and NaOH |
| C. | NaOH and Na2O |
| D. | Na2O and KOH |
| Answer» C. NaOH and Na2O | |
| 20. |
Space around nucleus where finding probability of electrons is maximum is called ____________________? |
| A. | Orbital |
| B. | Orbit is elliptical |
| C. | subshell |
| D. | Electron cloud |
| Answer» B. Orbit is elliptical | |
| 21. |
Splitting of spectral lines when atoms are subjected to strong electric filed is called_________________? |
| A. | Zeeman effect |
| B. | Stark effect |
| C. | Photoelectric effect |
| D. | Compton effect |
| Answer» C. Photoelectric effect | |
| 22. |
Steam causes more sever burn than the boiling water because it possesses _________________? |
| A. | Latent heat of fusion |
| B. | Latent heat of vaporization |
| C. | Latent heat of sublimation |
| D. | All of the above |
| Answer» C. Latent heat of sublimation | |
| 23. |
State function the macroscopic property of system depends upon________________? |
| A. | path of reaction |
| B. | initial state |
| C. | final state |
| D. | initial and final state |
| Answer» E. | |
| 24. |
Size of filter paper is selected according to the amount of__________________? |
| A. | solution |
| B. | amount of insoluble solute |
| C. | amount of soluble solute |
| D. | Amount of solvent |
| Answer» C. amount of soluble solute | |
| 25. |
Splitting of spectral lines when atom is subjected to magnetic field is called _______________? |
| A. | Zeemans effect |
| B. | Starks effect |
| C. | Photo electric effect |
| D. | Compton effect |
| Answer» B. Starks effect | |
| 26. |
Separation of a solid from its hot saturated solution by cooling is called__________________? |
| A. | vapourization |
| B. | solvent extraction |
| C. | filtration |
| D. | crystallization |
| Answer» E. | |
| 27. |
Solution having the property of a very little change in pH on adding a small amount of strong acid or base is called________________? |
| A. | buffer solution |
| B. | normal solution |
| C. | standard solution |
| D. | neutral solution |
| Answer» B. normal solution | |
| 28. |
Sum of exponents of molar concentration is called___________________? |
| A. | Order of reaction |
| B. | Molecularity |
| C. | Rate of reaction |
| D. | Average of reaction |
| Answer» B. Molecularity | |
| 29. |
Solubility of any salt can be determined from_______________? |
| A. | Ka |
| B. | Kb |
| C. | Kc |
| D. | Ksp |
| Answer» E. | |
| 30. |
Silicon differ from silica by a group of__________________? |
| A. | Ch3 |
| B. | OH |
| C. | OCH3 |
| D. | O2 |
| Answer» B. OH | |
| 31. |
Shaking two immiscible liquids increases_________________? |
| A. | Length of contact |
| B. | Volume of contact |
| C. | Area of contact |
| D. | all of above |
| Answer» D. all of above | |
| 32. |
Seventh period contains _________________ normal elements ? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» B. 4 | |
| 33. |
Spectrum is produced due to________________? |
| A. | Different wavelength |
| B. | Different colours |
| C. | Different intensities |
| D. | all have little contribution |
| Answer» B. Different colours | |
| 34. |
Stronger the oxidizing agent greater is the________________? |
| A. | Oxidation potential |
| B. | Reduction potential |
| C. | Redox potential |
| D. | emf of cell |
| Answer» C. Redox potential | |
| 35. |
Spontaneous reactions are_______________? |
| A. | Moderate |
| B. | Slow |
| C. | Fast |
| D. | not natural |
| Answer» D. not natural | |
| 36. |
Solubility of KCIO3 gives__________________? |
| A. | continuous and falling solubility curve |
| B. | discontinuous and falling solubility curve |
| C. | continuous and rising solubility curve |
| D. | discontinuous and rising solubility curve |
| Answer» D. discontinuous and rising solubility curve | |
| 37. |
Shielding effect across the period ________________? |
| A. | Increases |
| B. | Decreases |
| C. | Constant |
| D. | None |
| Answer» D. None | |
| 38. |
SO3 is not absorbed in water directly because__________________? |
| A. | Reaction is exothermic |
| B. | It is insoluble in water |
| C. | Dilute acid is produced |
| D. | All of above |
| Answer» B. It is insoluble in water | |
| 39. |
Sintered crucible is made up of________________? |
| A. | Plastic |
| B. | glass |
| C. | porcetain |
| D. | fiber |
| Answer» C. porcetain | |
| 40. |
SN2 reaction can be best carried out with__________________? |
| A. | primary alkyl halide |
| B. | secondary alkyl halide |
| C. | tertiary alkyl halide |
| D. | all |
| Answer» B. secondary alkyl halide | |
| 41. |
Sintered glass is a porous material used for ___________________? |
| A. | absorption |
| B. | adsorption |
| C. | filtration |
| D. | sublimation |
| Answer» D. sublimation | |