MCQOPTIONS
Saved Bookmarks
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. |
In nature, magnesium oxide is |
| A. | alkaline |
| B. | acidic |
| C. | None of Above |
| D. | catalyst |
| Answer» B. acidic | |
| 2. |
In which lens are the light rays brought to the focal point? |
| A. | Diverging lens |
| B. | Converging lens |
| C. | None of the lenses |
| D. | Both lenses |
| Answer» C. None of the lenses | |
| 3. |
Which one of the following have the lowest wavelength? |
| A. | infrared |
| B. | radio waves |
| C. | gamma rays |
| D. | ultraviolet |
| Answer» D. ultraviolet | |
| 4. |
Gas occupies |
| A. | area |
| B. | volume |
| C. | pressure |
| D. | base |
| Answer» C. pressure | |
| 5. |
The moment of force applied on a door is 15 N m and the force applied is 3.75 N, the distance of the handle from the pivot is |
| A. | 18.75 m |
| B. | 11.25 m |
| C. | 45 m |
| D. | 4 m |
| Answer» E. | |
| 6. |
The dimensions of the coefficient of friction are |
| A. | [M]^-1 [L]^-1 [T] |
| B. | |
| C. | [M] [L] [T]^-2 |
| D. | Its a dimensionless quantity |
| E. | [M] [L]^-1 [T]^-1 |
| Answer» D. Its a dimensionless quantity | |
| 7. |
In Group IV, the lowest melting point is of |
| A. | Lead (Pb) |
| B. | Tin (Sn) |
| C. | Germanium (Ge) |
| D. | Silicon (Si) |
| Answer» C. Germanium (Ge) | |
| 8. |
Silicon is in the centre of period 3 and has a structure of |
| A. | smaller molecule |
| B. | giant molecule |
| C. | none |
| D. | medium molecule |
| Answer» C. none | |
| 9. |
A filament bulb of 100 W consumes energy of 1000 J, the time taken by the bulb is |
| A. | 10 s |
| B. | 900 s |
| C. | 100000 s |
| D. | 1100 s |
| Answer» B. 900 s | |
| 10. |
In redox reaction Ag+ ions are itself |
| A. | reduced |
| B. | oxidized |
| C. | polarized |
| D. | stable |
| Answer» B. oxidized | |
| 11. |
Density is a |
| A. | Vector quantity |
| B. | Scalar quantity |
| C. | Derived quantity |
| D. | Base quantity |
| Answer» C. Derived quantity | |
| 12. |
According to Collision theory, the particles must |
| A. | collide with correct orientation |
| B. | collide every where |
| C. | shall not be below their melting points |
| D. | must be kept under immense pressures |
| Answer» B. collide every where | |
| 13. |
Waves transfer energy from one point to the other. Is this statement true or not? |
| A. | Its false |
| B. | Its true |
| C. | XX |
| D. | its neutral |
| Answer» C. XX | |
| 14. |
The bond energy of C=C bond is |
| A. | 610kJ/mol |
| B. | 350 kJ/mol |
| C. | 740kJ/mol |
| D. | 360kJ/mol |
| Answer» B. 350 kJ/mol | |
| 15. |
If the temperature increases, the speed of sound |
| A. | decreases |
| B. | also increases |
| C. | may increase or decrease |
| D. | remains same |
| Answer» C. may increase or decrease | |
| 16. |
Metals always bears |
| A. | negative oxidation number |
| B. | positive oxidation number |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 17. |
An object of mass 'm' raised to a height '2h' above the ground level possesses a gravitational potential energy of |
| A. | mgh |
| B. | 1⁄2 × mgh |
| C. | m × g⁄2h |
| D. | 2mgh |
| Answer» E. | |
| 18. |
MgO is used to line kilns and furnaces because |
| A. | of its ability to neutralized excess acids |
| B. | of its ability to act as a reducing agent |
| C. | because of its greater metallic radius |
| D. | because of its high MP |
| Answer» E. | |
| 19. |
gmol-1 is the standard unit for |
| A. | molar mass |
| B. | molecular mass |
| C. | atomic mass |
| D. | Avogadro constant |
| Answer» B. molecular mass | |
| 20. |
Water may act as |
| A. | base |
| B. | acid |
| C. | alkalis |
| D. | both a and b |
| Answer» E. | |
| 21. |
The change in enthalpy when one mole of compound is formed under standard conditions is called |
| A. | formation |
| B. | reaction |
| C. | neutralization |
| D. | combustion |
| Answer» B. reaction | |
| 22. |
SI Unit' stands for |
| A. | Standard Integrated Unit |
| B. | Symbolically Integrated Unit |
| C. | Standard International Unit |
| D. | Scientific International Unit |
| Answer» D. Scientific International Unit | |
| 23. |
CH3COCl is the structural formula for |
| A. | ethanoyl chloride |
| B. | ethanoic acid |
| C. | all of them |
| D. | ethanal chloride |
| Answer» B. ethanoic acid | |
| 24. |
Which of the Halogen can react with noble gases like Xe? |
| A. | Cl |
| B. | F |
| C. | I |
| D. | Br |
| Answer» C. I | |
| 25. |
The boiling point of the sea water is |
| A. | slightly lesser than the boiling point of pure water |
| B. | slightly greater than the boiling point of pure water |
| C. | None of the above |
| D. | same as the boiling point of pure water |
| Answer» C. None of the above | |
| 26. |
In ammonia, greater repulsion is of |
| A. | bond pair-bond pair |
| B. | lone pair-bond pair |
| C. | both of these |
| D. | None of Above |
| Answer» C. both of these | |
| 27. |
The value of E |
| A. | standard cell potential |
| B. | standard electrode potential |
| C. | none |
| D. | both a and b |
| Answer» B. standard electrode potential | |
| 28. |
The acids which completely dissociate in a solution are called as |
| A. | weak acids |
| B. | strong acids |
| C. | weak bases |
| D. | strong bases |
| Answer» C. weak bases | |
| 29. |
Concrete sets when arranged with iron rods running through it improves it |
| A. | style |
| B. | strength |
| C. | texture |
| D. | shape |
| Answer» C. texture | |
| 30. |
To reduce pollutants from motor vehicles car exhaust systems are fitted with |
| A. | mud guards |
| B. | catalytic converters |
| C. | fuel converters |
| D. | cylinders |
| Answer» C. fuel converters | |
| 31. |
C6H5OH is a |
| A. | methanol |
| B. | alcohol |
| C. | all of them |
| D. | phenol |
| Answer» E. | |
| 32. |
Many enzyme-catalyzed reactions are carried out in |
| A. | Cytoplasm |
| B. | cell surface membranes |
| C. | mitochondrian |
| D. | Nucleus |
| Answer» B. cell surface membranes | |
| 33. |
The mole of a substance is the relative atomic mass or relatively molecular mass in terms of |
| A. | grams |
| B. | milligrams |
| C. | micrograms |
| D. | kilograms |
| Answer» B. milligrams | |
| 34. |
If one half of an equation shows oxidation and remaining half reflects reduction then we call them as |
| A. | oxidation equation |
| B. | half equation |
| C. | Redox-equation |
| D. | reduction equation |
| Answer» C. Redox-equation | |
| 35. |
The elements present in right of silicon are |
| A. | non-metallic |
| B. | smaller in size |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 36. |
Going across period the first ionization energy |
| A. | decreases |
| B. | increases |
| C. | constant |
| D. | remains same |
| Answer» C. constant | |
| 37. |
Propan-2ol will get oxidized to give |
| A. | ketone |
| B. | aldehyde |
| C. | carbonyl |
| D. | alcohol |
| Answer» B. aldehyde | |
| 38. |
Hydrogen bonding reduces the quality of water molecules to |
| A. | attract |
| B. | repel |
| C. | slide over each other |
| D. | compactly arrange |
| Answer» D. compactly arrange | |
| 39. |
Gases are highly compressible due to |
| A. | collision of particles |
| B. | unfixed shape and volume |
| C. | the distance of particles |
| D. | high density |
| Answer» D. high density | |
| 40. |
Total internal reflection occurs when |
| A. | light comes into air from vacuum |
| B. | light passes from a denser to a lighter medium |
| C. | light passes from more denser to less denser medium |
| D. | light goes to vacuum from air |
| Answer» D. light goes to vacuum from air | |
| 41. |
The mixture of 70% copper and 30% zinc is an alloy called |
| A. | aluminum |
| B. | brass |
| C. | silver |
| D. | gold |
| Answer» C. silver | |
| 42. |
The SI Unit for temperature is |
| A. | Fahrenheit |
| B. | Centigrade |
| C. | Celsius |
| D. | Kelvin |
| Answer» E. | |
| 43. |
A reactive organic compound related to a carboxylic acid, with OH group replaced by a Cl atom is called as |
| A. | aryls |
| B. | Acyl chloride |
| C. | carboxylic acid |
| D. | benzene |
| Answer» C. carboxylic acid | |
| 44. |
The number of bonding pairs in methane is |
| A. | 4 |
| B. | 2 |
| C. | 8 |
| D. | 6 |
| Answer» B. 2 | |
| 45. |
Different ligands will split up by different compounds to give of |
| A. | different colored complexes |
| B. | same colored complexes |
| C. | none |
| D. | both a and b |
| Answer» B. same colored complexes | |
| 46. |
Bonding pairs of electrons in water H |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 3 |
| Answer» B. 1 | |
| 47. |
The unchanged or constant speed is termed as |
| A. | average speed |
| B. | instantaneous speed |
| C. | variable speed |
| D. | uniform speed |
| Answer» E. | |
| 48. |
Materials should be conserved because of |
| A. | their irreplacement |
| B. | limited number of ores |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 49. |
The metallic bonding in aluminum is stronger because of large number of |
| A. | spectator electrons |
| B. | delocalized electrons |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 50. |
An object weighs 160 N on the moon, its mass would be |
| A. | 100 kg |
| B. | 16 kg |
| C. | 1.6 kg |
| D. | 10 kg |
| Answer» B. 16 kg | |