MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Diamond is soluble in |
| A. | water |
| B. | carbon tetrachloride |
| C. | benzene |
| D. | no solvent |
| Answer» E. | |
| 2. |
If 10 percent urea is present in NaCl it will become |
| A. | needle like |
| B. | cubic |
| C. | oval |
| D. | round |
| Answer» B. cubic | |
| 3. |
The different form of solids which have same crystalline forms are called |
| A. | isomorphs |
| B. | duplicates |
| C. | parallel solids |
| D. | opposite solids |
| Answer» B. duplicates | |
| 4. |
In London dispersion forces the dipole which is created is |
| A. | temporary |
| B. | permanent |
| C. | weak |
| D. | strong |
| Answer» B. permanent | |
| 5. |
The third angle in hexagonal system of crystals makes angle of |
| A. | 60 degree |
| B. | 50 degree |
| C. | 90 degree |
| D. | 30 degree |
| Answer» D. 30 degree | |
| 6. |
On basis of arrangement of molecules solids have |
| A. | three types |
| B. | two types |
| C. | five types |
| D. | six types |
| Answer» C. five types | |
| 7. |
Energy required to break one mole of solid in ionic crystals is called |
| A. | free energy |
| B. | lattice energy |
| C. | heat energy |
| D. | none |
| Answer» C. heat energy | |
| 8. |
Crystalline forms are affected by |
| A. | chemical nature of atoms |
| B. | number of atoms |
| C. | physical properties |
| D. | surface area of crystal |
| Answer» C. physical properties | |
| 9. |
The structure of ionic solids depends upon the property of the captions and anions which is |
| A. | radius ratio |
| B. | size |
| C. | force |
| D. | attraction |
| Answer» B. size | |
| 10. |
The melting points of covalent molecular solids is |
| A. | high |
| B. | low |
| C. | moderate |
| D. | defined |
| Answer» B. low | |
| 11. |
Molar heat of vaporization is measured for |
| A. | solids |
| B. | liquids |
| C. | gases |
| D. | plasma |
| Answer» C. gases | |
| 12. |
London dispersion forces were explained in |
| A. | 1978 |
| B. | 1980 |
| C. | 1987 |
| D. | 1930 |
| Answer» E. | |
| 13. |
Ionic reactions are usually very |
| A. | fast |
| B. | slow |
| C. | very slow |
| D. | moderate |
| Answer» B. slow | |
| 14. |
The structure of covalent compounds is |
| A. | closed |
| B. | open |
| C. | compact |
| D. | box like |
| Answer» C. compact | |
| 15. |
6kJ/mole is enthalpy of vaporization for |
| A. | iodine |
| B. | methane |
| C. | hexane |
| D. | sulphurdioxide |
| Answer» C. hexane | |
| 16. |
When crystalline solids' properties are changed with respect to direction the phenomenon is called |
| A. | spectroscopy |
| B. | anisotropy |
| C. | spectrometry |
| D. | none |
| Answer» C. spectrometry | |
| 17. |
The electrical properties of solid iodine include that it is |
| A. | non conductor |
| B. | conductor |
| C. | poor conductor |
| D. | moderate conductor |
| Answer» D. moderate conductor | |
| 18. |
The interstices which are formed by covering of metallic layers are of |
| A. | two types |
| B. | three types |
| C. | four types |
| D. | five types |
| Answer» B. three types | |
| 19. |
Vacuum distillation avoids |
| A. | boiling |
| B. | decomposition |
| C. | energy |
| D. | heat |
| Answer» C. energy | |
| 20. |
The look of diamond crystal is |
| A. | centered cubic |
| B. | hexagonal |
| C. | sphere |
| D. | circle |
| Answer» B. hexagonal | |
| 21. |
Between melting temperature and clearing temperature state exist is called |
| A. | liquid crystal |
| B. | gases |
| C. | air |
| D. | crystals |
| Answer» B. gases | |
| 22. |
In formula |
| A. | one |
| B. | three |
| C. | two |
| D. | zero |
| Answer» E. | |
| 23. |
Dual characteristic of metals was described by |
| A. | Max Planck |
| B. | stoney |
| C. | Moseley |
| D. | Louis deBroglie |
| Answer» E. | |
| 24. |
The light which is obtained from hydrogen spectrum is |
| A. | greenish |
| B. | yellow |
| C. | bluish |
| D. | purplish |
| Answer» D. purplish | |
| 25. |
The path of the rays of cathode in which they travel is |
| A. | curved |
| B. | circular |
| C. | straight |
| D. | oblique |
| Answer» D. oblique | |
| 26. |
For the L shell the value of n is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 27. |
Electric properties of cathode rays were discovered by |
| A. | J Perrin |
| B. | Peter |
| C. | J Thomson |
| D. | Edward |
| Answer» D. Edward | |
| 28. |
Energy released in the discharge tube when electrons are stopped is in the form of |
| A. | magnetic waves |
| B. | electric waves |
| C. | electromagnetic waves |
| D. | none |
| Answer» D. none | |
| 29. |
x10 |
| A. | Hα |
| B. | HΒ |
| C. | Hγ |
| D. | Hω |
| Answer» C. Hγ | |
| 30. |
Quantum numbers are |
| A. | arithmetical values |
| B. | numerical values |
| C. | geometric values |
| D. | logical values |
| Answer» C. geometric values | |
| 31. |
The charge on oil droplets can be changed by change of |
| A. | electric field |
| B. | magnetic field |
| C. | both fields |
| D. | no field |
| Answer» B. magnetic field | |
| 32. |
The magnetic properties of cathode rays were discovered in |
| A. | 1897 |
| B. | 1890 |
| C. | 1895 |
| D. | 1870 |
| Answer» D. 1870 | |
| 33. |
The penetration power of neutrons is |
| A. | low |
| B. | moderate |
| C. | very low |
| D. | high |
| Answer» E. | |
| 34. |
Glycerin can be easily purified by use of |
| A. | vacuum distillation |
| B. | simple distillation |
| C. | none |
| D. | boiling |
| Answer» B. simple distillation | |
| 35. |
In structure of diamond the hybridization present in tetrahedron is |
| A. | sp |
| B. | sp2 |
| C. | sp3 |
| D. | sp4 |
| Answer» D. sp4 | |
| 36. |
One of the part of solidified noble gases is |
| A. | non polar atoms |
| B. | polar atoms |
| C. | molecules |
| D. | ions |
| Answer» B. polar atoms | |
| 37. |
The bond lengths which are present in diamond are |
| A. | 234 pm |
| B. | 154pm |
| C. | 890 pm |
| D. | 600 pm |
| Answer» C. 890 pm | |
| 38. |
A liquid can be boiled at any temperature when we change |
| A. | container |
| B. | external pressure |
| C. | internal pressure |
| D. | surface area |
| Answer» C. internal pressure | |
| 39. |
The formation of compounds PF |
| A. | octet |
| B. | doublet |
| C. | triplet |
| D. | none |
| Answer» B. doublet | |
| 40. |
Planck's theory was given by |
| A. | Edward Planck |
| B. | Max Planck |
| C. | Merlin Planck |
| D. | John Planck |
| Answer» C. Merlin Planck | |
| 41. |
In Platyhelminthes respiratory and circulatory system are |
| A. | present |
| B. | absent |
| C. | weak |
| D. | partially present |
| Answer» C. weak | |
| 42. |
In rats the ability to withstand any stress situation such as cold is diminished if |
| A. | adrenal cortex is removed |
| B. | adrenal medulla is removed |
| C. | cortex is removed |
| D. | medulla is removed |
| Answer» C. cortex is removed | |
| 43. |
The function f = { (x,Y) | Y = ax |
| A. | linear function |
| B. | constant function |
| C. | cubic function |
| D. | quadratic function |
| Answer» E. | |
| 44. |
For any non- singular matrix A, A |
| A. | |A|adj A |
| B. | 1 /|A|adj A |
| C. | adj A⁄|A| |
| D. | None of the Above |
| Answer» D. None of the Above | |
| 45. |
If A is a skew symmetric matrix, then A |
| A. | −A |
| B. | A |
| C. | 0 |
| D. | diagonal matrix |
| Answer» B. A | |
| 46. |
If f:x→2x |
| A. | trigonometric function |
| B. | logarithmic function |
| C. | exponential function |
| D. | algebric function |
| Answer» E. | |
| 47. |
The function ƒ(x) = ax |
| A. | a > 0 |
| B. | a < 0 |
| C. | a > 1 |
| D. | a > 2 |
| Answer» C. a > 1 | |
| 48. |
If ƒ(x) = -2x+8, then f |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 0 |
| Answer» B. 3 | |
| 49. |
If ƒ(x) = e |
| A. | sin(x) |
| B. | cos(x) |
| C. | lnx |
| D. | e |
| E. | |
| Answer» D. e | |
| 50. |
If f is a bijective function, then ƒ(f |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | x |
| Answer» E. | |