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- James Watt
- Dalton
- Chadwick
- Harvey
Everyday Science MCQs
Diesel engine was invented by _____.
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- Albert Einstein
- Rudolph Diesel
- George Stephenson
- James Watt
Archimedes worked on _____.
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- Law of flotation of bodies
- Principle of lever
- Both of the above
- None of the above
The temperature above which a substance can exist only in its gaseous state and cannot be liquified regardless of the magnitude of pressure exerted on it, is called _____.
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- critical temperature
- absolute temperature
- surface temperature
- boosting temperature
The quantity of heat, that 1 gm of a substance absorbs or evolves during the change of its state at a constant temperature from solid to liquid and from liquid to saturated vapour, is called _____.
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- specific heat
- heat of vaporisation
- latent heat
- heat of transformation
The phenomenon in which two or more compounds are made up of the same number and kind of atoms but differ in their properties due to different arrangements of atoms with their molecules, is called _____.
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- isomerism
- hydrolysis
- halogenation
- isomorphism
The phenomenon of existence of an element in more than one form in the same physical state is called _____.
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- dimorphism
- isomorphism
- isomerism
- allotropy
The phenomenon in which a chemical reaction is accelerated or retarded by the mere presence of a substance which remains unchanged at the end of the reaction is called _____.
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- catabolism
- cataclysm
- catalysis
- cataphoresis
Which of the following statements is true about reduction?
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- Process involving addition of Oxygen
- Process involving removal of electronegative radical
- Process involving addition of electropositive radical
- Process involving addition of hydrogen
The conversion of a solid directly into vapour and its subsequent condensation without melting is called _____.
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- deliquescence
- evaporation
- desiccation
- sublimation
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