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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.
| 1851. |
The amount of thermal energy required to change the state of 1 kg of object from liquid to gas or vice versa is termed as |
| A. | Specific Latent Heat of Vaporization |
| B. | Specific Latent Heat of Fusion |
| C. | Specific Heat Capacity |
| D. | Heat Capacity |
| Answer» B. Specific Latent Heat of Fusion | |
| 1852. |
In a sample of substance, at any given temperature the energy of all particles will |
| A. | be same |
| B. | not be same |
| C. | constant |
| D. | equal |
| Answer» C. constant | |
| 1853. |
In Redox reactions electrons may be |
| A. | lost |
| B. | gained |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1854. |
The gradient of a displacement-time graph gives |
| A. | Distance travelled by the object |
| B. | Velocity of the moving object |
| C. | None of the above |
| D. | Acceleration of the moving object |
| Answer» C. None of the above | |
| 1855. |
Lone pairs in Sulphur hexafluoride are |
| A. | 1 |
| B. | 0 |
| C. | 3 |
| D. | 2 |
| Answer» C. 3 | |
| 1856. |
Negative acceleration is also known as |
| A. | Relaxation |
| B. | Retardation |
| C. | All of the above |
| D. | Escalation |
| Answer» C. All of the above | |
| 1857. |
Most enzymes lose their effectiveness at temperature about |
| A. | 35 °C |
| B. | 25 °C |
| C. | 45 °C |
| D. | 55 °C |
| Answer» D. 55 °C | |
| 1858. |
The small changes in volume is measured by an instrument called |
| A. | calorimeter |
| B. | spectrometer |
| C. | dilatometer |
| D. | colorimeter |
| Answer» D. colorimeter | |
| 1859. |
The reaction involving breakdown of water molecule is known as |
| A. | hydrolysis |
| B. | heterolytic |
| C. | all of them |
| D. | homolytic |
| Answer» B. heterolytic | |
| 1860. |
The pair of two hollow cups is termed as |
| A. | Isaac hemispheres |
| B. | Galileo hemispheres |
| C. | Magdeburg hemispheres |
| D. | Albert hemispheres |
| Answer» D. Albert hemispheres | |
| 1861. |
Which one of the following does not belong to the list of factors that affect the rate of transfer of energy by radiation? |
| A. | Temperature of the surface |
| B. | Color and texture of the surface |
| C. | Surface area |
| D. | Movement of air above the surface |
| Answer» E. | |
| 1862. |
To set up temperature of a thermometer |
| A. | Melting and boiling point os mercury |
| B. | Melting and boiling points of water are used |
| C. | Absolute zero is used |
| D. | Fixed points are used |
| Answer» E. | |
| 1863. |
Danish chemist Soren Sorensen first time introduced |
| A. | periodic table |
| B. | pH |
| C. | polarity |
| D. | ionization |
| Answer» C. polarity | |
| 1864. |
Energy released or absorbed during change of state is known as |
| A. | Latent heat |
| B. | Heat capacity |
| C. | Thermal oxidation |
| D. | Thermal capability |
| Answer» B. Heat capacity | |
| 1865. |
The objects that produce their own light are called |
| A. | Non-luminous objects |
| B. | Luminous objects |
| C. | Opaque objects |
| D. | Transparent objects |
| Answer» C. Opaque objects | |
| 1866. |
The attraction of higher nuclear charge is less than |
| A. | distance between outer most electrons and nucleus |
| B. | shielding effect |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1867. |
The symbol to represent the speed of light in the medium is |
| A. | m |
| B. | l |
| C. | v |
| D. | c |
| Answer» D. c | |
| 1868. |
Each transition element has more than one |
| A. | oxidation state |
| B. | ion |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1869. |
Stopped flow spectrophotometry is use to monitor course of |
| A. | slow reactions |
| B. | fast reactions |
| C. | reversible reactions |
| D. | equilibrium reactions |
| Answer» C. reversible reactions | |
| 1870. |
Ca(s) + H |
| A. | sparingly soluble in water |
| B. | highly soluble in water |
| C. | None of Above |
| D. | insoluable in water |
| Answer» B. highly soluble in water | |
| 1871. |
The Kelvin scale has |
| A. | two fixed points |
| B. | one fixed point |
| C. | one fixed and two variable points |
| D. | three fixed points |
| Answer» C. one fixed and two variable points | |
| 1872. |
The degree of the polarity of a molecule is measured as |
| A. | dipole-dipole interaction |
| B. | dipole moment |
| C. | All of Above |
| D. | dipole reaction |
| Answer» C. All of Above | |
| 1873. |
The particles are fixed together having fixed volume and are compressed slightly in |
| A. | liquid |
| B. | solid |
| C. | All of Above |
| D. | gas |
| Answer» B. solid | |
| 1874. |
The pH of the H |
| A. | 3 |
| B. | 1 |
| C. | 6 |
| D. | 5 |
| Answer» C. 6 | |
| 1875. |
An inorganic non-metallic solid prepared by heating a substance to a very high temperature is called |
| A. | ceramics |
| B. | molten |
| C. | none |
| D. | pirate |
| Answer» B. molten | |
| 1876. |
Refrigerators are a good example of |
| A. | Convection |
| B. | Conduction |
| C. | Conduction and Radiation |
| D. | Radiation |
| Answer» B. Conduction | |
| 1877. |
After bubbling through concentrated solution of any hydrogen halide the product obtained is |
| A. | alkane |
| B. | halogen |
| C. | halogen alkene |
| D. | halogen alkane |
| Answer» D. halogen alkane | |
| 1878. |
The breaking down of large less useful hydrocarbons into smaller less useful hydrocarbons is known as |
| A. | addition |
| B. | decomposition |
| C. | breaking |
| D. | cracking |
| Answer» E. | |
| 1879. |
The vapor pressure is directly proportional to the temperature because of |
| A. | faster particles movement |
| B. | more kinetic energy |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1880. |
Of the given metals of Period 3, which has the highest electronegativity? |
| A. | Na |
| B. | Cl |
| C. | S |
| D. | Al |
| Answer» C. S | |
| 1881. |
The process in which thermal energy is transferred by the means of current in the medium in fluids is termed as |
| A. | Convection |
| B. | Conduction |
| C. | Conduction and Radiation |
| D. | Radiation |
| Answer» B. Conduction | |
| 1882. |
Cars releases unburnt hydrocarbons, carbon monoxide, acidic nitrogen oxides and |
| A. | bacteria |
| B. | carcinogens |
| C. | pathogens |
| D. | noise |
| Answer» C. pathogens | |
| 1883. |
The efficiency of a machine is measured by |
| A. | (Energy Input ⁄ Wasted Energy Output) × 100 % |
| B. | (Wasted Energy Output ⁄ Energy Input) × 100 % |
| C. | (Energy Input ⁄ Useful Energy Output) × 100 % |
| D. | (Useful Energy Output ⁄ Energy Input) × 100 % |
| Answer» E. | |
| 1884. |
Lone pairs in CO |
| A. | 1 |
| B. | none |
| C. | 3 |
| D. | 2 |
| Answer» C. 3 | |
| 1885. |
Surface irregularities between two surfaces result in |
| A. | Repulsion |
| B. | Resistance |
| C. | Attraction |
| D. | Friction |
| Answer» E. | |
| 1886. |
In flares production, mostly the fine powder used is of |
| A. | sulfur |
| B. | silicon |
| C. | all of them |
| D. | magnesium |
| Answer» E. | |
| 1887. |
The percentage by mass of any element is calculated with help of |
| A. | relative atomic masses |
| B. | formula of compound |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1888. |
After Ne, the enthalpy change of vaporization is highest in |
| A. | Xe |
| B. | He |
| C. | Ar |
| D. | Kr |
| Answer» B. He | |
| 1889. |
If a car accelerates from 20 m⁄s to 40 m⁄s in 10 s and its forward thrust is equal to 3 kN, whats the mass of the car? |
| A. | 150 tones |
| B. | 1500 tones |
| C. | 1.5 tones |
| D. | 15 tones |
| Answer» D. 15 tones | |
| 1890. |
Phenol reacts with alkali to give |
| A. | water |
| B. | salt |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1891. |
In a comparison between ethylamine and ammonia stronger base is |
| A. | ethylamine |
| B. | ammonia |
| C. | none |
| D. | both a and b |
| Answer» B. ammonia | |
| 1892. |
The greater the difference in the temperature of the wires, |
| A. | the lesser the voltage |
| B. | the greater the voltage |
| C. | the lesser the current |
| D. | the greater the current |
| Answer» C. the lesser the current | |
| 1893. |
Thermocouple thermometer can be used to measure the temperature of lava but with |
| A. | the removal of cold junction which produces single junction |
| B. | the removal of hot junction |
| C. | the removal of both junctions |
| D. | the removal of cold junction which produces double junction |
| Answer» B. the removal of hot junction | |
| 1894. |
The rate of chemical reaction is increased by a substance called |
| A. | catalyst |
| B. | reactant |
| C. | none |
| D. | sludge |
| Answer» B. reactant | |
| 1895. |
The stoichiometry of equation is defined as the mole ratio of |
| A. | products |
| B. | reactants |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1896. |
The compounds which are made up of benzene are known as |
| A. | aromatic compounds |
| B. | aryl compounds |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1897. |
Amino acids are by nature |
| A. | basic |
| B. | acidic |
| C. | alkalinic |
| D. | amphoteric |
| Answer» E. | |
| 1898. |
Atoms and molecules are |
| A. | always in a bond |
| B. | always in motion |
| C. | always opposite |
| D. | always together |
| Answer» C. always opposite | |
| 1899. |
The SI unit of specific latent heat of fusion⁄vaporisation is |
| A. | joule ⁄ kelvin |
| B. | joule |
| C. | joule ⁄ (kilogram × kelvin) |
| D. | joule ⁄ kilogram |
| Answer» E. | |
| 1900. |
The melting point of chlorine is |
| A. | 1683 |
| B. | 172 |
| C. | 371 |
| D. | 317 |
| Answer» C. 371 | |