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MCQOPTIONS
This section includes 64577 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 1751. |
The process by which electrons spin and pair up against each other is called |
| A. | pair-spin repulsion |
| B. | spin-pair repulsion |
| C. | paired-spin repulsion |
| D. | spin-repulsion |
| Answer» C. paired-spin repulsion | |
| 1752. |
Volume is |
| A. | inversely proportional to pressure |
| B. | directly proportional to pressure |
| C. | directly proportional to friction |
| D. | inversely proportional to temperature |
| Answer» B. directly proportional to pressure | |
| 1753. |
The standard enthalpy change of neutralization involves the reaction of acid with an alkali to for one mole of |
| A. | oxygen |
| B. | water |
| C. | anhydrous salt |
| D. | nitrogen |
| Answer» C. anhydrous salt | |
| 1754. |
Electrical voltage or E.M.F (Electro Motive Force) is a property that changes with |
| A. | Change in temperature |
| B. | Change in pressure |
| C. | Change in heat capacity |
| D. | Change in density |
| Answer» B. Change in pressure | |
| 1755. |
The pendulum bob cannot attain its initial height because |
| A. | it continues to lose energy in sound form |
| B. | it continues to lose energy in thermal form |
| C. | it continues to lose energy in potential form |
| D. | it continues to lose energy in light form |
| Answer» C. it continues to lose energy in potential form | |
| 1756. |
Electromagnetic spectrum comprises |
| A. | longitudinal waves |
| B. | transverse waves |
| C. | latitudinal waves |
| D. | transverse and longitudinal both |
| Answer» C. latitudinal waves | |
| 1757. |
A thermocouple shows an e.m.f. of 5.00 mV with one of its junctions at 0 °C and the other at 100 °C. If the 100 °C junction is taken out of the boiling water and placed in a glass of water having temperature same as the room temperature (assume room temperature in this case = 25 °C), the e.m.f. registered on thermocouple would be |
| A. | 5 mV |
| B. | 1.25 mV |
| C. | 20 mV |
| D. | 10 mV |
| Answer» C. 20 mV | |
| 1758. |
An object with a higher surface area would |
| A. | emit more but absorb less infrared radiations |
| B. | emit and absorb more infrared radiations |
| C. | emit and absorb less infrared radiations |
| D. | emit less but absorb more infrared radiations |
| Answer» C. emit and absorb less infrared radiations | |
| 1759. |
A very important group of compounds which contain amino group and carboxylic group is called |
| A. | amides |
| B. | amines |
| C. | all of them |
| D. | amino acids |
| Answer» E. | |
| 1760. |
Enthalpy change of atomization involves the production of gaseous atoms from its |
| A. | solute |
| B. | atoms |
| C. | products |
| D. | reactants |
| Answer» C. products | |
| 1761. |
Metals lose electrons from their lattice to become |
| A. | negative ions |
| B. | positive ions |
| C. | non-metals |
| D. | alkalis |
| Answer» C. non-metals | |
| 1762. |
Condensation polymerization reactions produce |
| A. | proteins |
| B. | peptides |
| C. | none |
| D. | both a and b |
| Answer» B. peptides | |
| 1763. |
A salt bridge is made from strip of filter paper dipped in saturated |
| A. | potassium nitrate |
| B. | silver nitrate |
| C. | none |
| D. | both a and b |
| Answer» B. silver nitrate | |
| 1764. |
The point through which its whole weight appears to act for any orientation of the object is termed as |
| A. | center of gravity |
| B. | mid-point of gravity |
| C. | neutral equilibrium |
| D. | stable equilibrium |
| Answer» B. mid-point of gravity | |
| 1765. |
Silicon dioxide reacts with acid to form |
| A. | salt |
| B. | water |
| C. | oxygen |
| D. | both a and b |
| Answer» E. | |
| 1766. |
Element to oxidize with low oxidation state needs |
| A. | less energy |
| B. | high energy |
| C. | no energy |
| D. | constant energy |
| Answer» B. high energy | |
| 1767. |
During the evaporation process, the thermal energy is used from |
| A. | the surroundings |
| B. | the surface of the liquid |
| C. | the whole liquid |
| D. | the bottom through the base |
| Answer» B. the surface of the liquid | |
| 1768. |
Iodoform can be used as |
| A. | healing wounds |
| B. | antiseptic |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1769. |
Force due to pull of the gravity is called |
| A. | Force |
| B. | Weight |
| C. | Tension |
| D. | Mass |
| Answer» C. Tension | |
| 1770. |
To initiate a reaction, the minimum energy which is required to break bonds is called |
| A. | activation energy |
| B. | bond energy |
| C. | none |
| D. | both a and b |
| Answer» B. bond energy | |
| 1771. |
Sodium and calcium react with water and they do not dissolve in |
| A. | acid |
| B. | water |
| C. | alcohol |
| D. | alkalis |
| Answer» C. alcohol | |
| 1772. |
Potassium oxide is |
| A. | a basic oxide |
| B. | an acidic oxide |
| C. | None of Above |
| D. | amphoteric |
| Answer» B. an acidic oxide | |
| 1773. |
The force of resistance is also known as |
| A. | Tension |
| B. | Contact force |
| C. | Opposing force |
| D. | Viscous force |
| Answer» E. | |
| 1774. |
New bonds are formed between adjacent nitrogen atoms and |
| A. | oxygen |
| B. | carbondioxide and oxygen |
| C. | nitrogen |
| D. | carbondioxide |
| Answer» C. nitrogen | |
| 1775. |
If an apple is hanging on a tree, the downward force would be weight and the upward force would be |
| A. | Weight |
| B. | Friction |
| C. | Resistance |
| D. | Tension |
| Answer» E. | |
| 1776. |
The oxidation number of PCl3 is |
| A. | 4 |
| B. | 3 |
| C. | 1 |
| D. | 2 |
| Answer» C. 1 | |
| 1777. |
Sodium hydroxide ionizes in solution |
| A. | completely |
| B. | partially |
| C. | none |
| D. | incompletely |
| Answer» B. partially | |
| 1778. |
The general formula for monobasic acid is |
| A. | HA |
| B. | AH |
| C. | aH |
| D. | Ha |
| Answer» B. AH | |
| 1779. |
Pascals is not used in terms of |
| A. | pressure in liquids |
| B. | atmospheric pressure |
| C. | any kind of pressure |
| D. | pressure in solids |
| Answer» C. any kind of pressure | |
| 1780. |
Compounds which have same molecular formula but different structural formula is called |
| A. | molecular isomer |
| B. | structural isomer |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 1781. |
The strength of metallic bonding also increases with the increase in |
| A. | mobile electrons |
| B. | positive charge |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1782. |
Proteins are natural |
| A. | occurring |
| B. | polymers |
| C. | all of them |
| D. | absorbents |
| Answer» C. all of them | |
| 1783. |
A truck pulls a car with a force of 50 N with the acceleration of 5 ms |
| A. | 10 kg |
| B. | 45 kg |
| C. | 55 kg |
| D. | 250 kg |
| Answer» B. 45 kg | |
| 1784. |
The state of equilibrium is when |
| A. | there is no force acting on an object |
| B. | there is no opposing force |
| C. | B and C both |
| D. | the object is moving in uniform speed |
| Answer» D. the object is moving in uniform speed | |
| 1785. |
The smallest element in group VII is |
| A. | fluorine |
| B. | iodine |
| C. | bromine |
| D. | chlorine |
| Answer» B. iodine | |
| 1786. |
The amount of thermal energy required to change 1 kg of the solid to liquid and vice versa without any change in temperature is called |
| A. | Specific Latent Heat of Vaporization |
| B. | Specific Latent Heat of Fusion |
| C. | Specific Heat Capacity |
| D. | Heat Capacity |
| Answer» C. Specific Heat Capacity | |
| 1787. |
The SI unit of latent heat is |
| A. | joule ⁄ kelvin |
| B. | joule |
| C. | joule ⁄ (kilogram × kelvin) |
| D. | joule ⁄ kilogram |
| Answer» C. joule ⁄ (kilogram × kelvin) | |
| 1788. |
The effect of pressure is in case of gases is similar to effect of |
| A. | molarities |
| B. | concentration |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 1789. |
Phenol is stronger acid than water and itself it is |
| A. | weakly basic |
| B. | weakly acidic |
| C. | strong acid |
| D. | alkali |
| Answer» C. strong acid | |
| 1790. |
Enthalpy change of vaporization can be increased if |
| A. | isotopes are introduced |
| B. | number of protons are reduced |
| C. | number of electrons are added |
| D. | catalysts or speed regulators are added |
| Answer» D. catalysts or speed regulators are added | |
| 1791. |
Which one of the following is a good example of sound waves? |
| A. | Slinky spring |
| B. | Rope |
| C. | Elastic rod |
| D. | Elastic band |
| Answer» B. Rope | |
| 1792. |
In an unsaturated solution the product of concentration of each ion of sparingly soluble salt at 298K raised to power of their relative concentrations is |
| A. | solubility reactant |
| B. | solubility product |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 1793. |
Changes in electrical conductivity during reactions is due to |
| A. | free electrons |
| B. | ions production |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1794. |
The only element which have electronic configuration of 1s2 is |
| A. | lithium |
| B. | helium |
| C. | oxygen |
| D. | beryllium |
| Answer» C. oxygen | |
| 1795. |
Aluminum oxide reacts as an acid upon reaction with |
| A. | acid |
| B. | water |
| C. | alkali |
| D. | base |
| Answer» E. | |
| 1796. |
A substance which neutralizes a base is called |
| A. | alkali |
| B. | acid |
| C. | halogen |
| D. | alkaloid |
| Answer» C. halogen | |
| 1797. |
Each halogen atom tends to gain one electron when it reacts with |
| A. | non-metal |
| B. | metal |
| C. | water |
| D. | acid |
| Answer» C. water | |
| 1798. |
The line used to indicate the gravitational force is termed as |
| A. | line of weight |
| B. | line of sight |
| C. | gravity line |
| D. | plumb line |
| Answer» E. | |
| 1799. |
Non-polar side chains in amino acids include |
| A. | Ser |
| B. | Ala |
| C. | Lys |
| D. | Asp |
| Answer» C. Lys | |
| 1800. |
Nickel is good at |
| A. | chemisorptions |
| B. | adsorption |
| C. | desorption |
| D. | both a and b |
| Answer» E. | |