Tag: matter around us
Questions Related to matter around us
One atmosphere is numerically equal to approximately:
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${ 10 }^{ 6 }\quad dyne\quad { cm }^{ -2 }$
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${ 10 }^{ 2 }\quad dyne\quad { cm }^{ -2 }$
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${ 10 }^{ 4 }\quad dyne\quad { cm }^{ -2 }$
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${ 10 }^{ 8 }\quad dyne\quad { cm }^{ -2 }$
$P _{dyne/cm^2}=P _{atm}\times 1.01325\times 10^6$
The S.I. unit of pressure is:
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pascal
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atm
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newton
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None of the above
The SI unit of pressure is pascal. Newton is the unit of force and atm is not the S.I. unit of pressure.
The S.I unit of mass is ___________.
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kilogram
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gram
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decigram
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milligram
The S.I unit of mass is kilogram (kg).
Our body temperature is maintained at :
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${20 ^ 0C }$
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${41 ^0 C}$
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${37 ^0 C}$
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${11^0 C}$
Our body temperature is maintained at $37^\circ C$ or $98^\circ F$ on an average. Our body has thermo-regulation mechanism that keeps the body at optimum operating temperature. Water plays an important role in this mechanism.
The SI unit for force is:
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Torr
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Newton
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Joule
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Dyne
Force is the product of mass and acceleration
What is the S.I unit of volume?
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cubic centimeter
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cubic meter
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cubic foot
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cubic millimeter
The S.I unit of volume is cubic meter $(m^3)$.
The S.I. unit of temperature is:
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kelvin
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celsius
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fahrenheit
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None of the above
The SI unit of temperature is kelvin.
What is the physical state of water at $30^{\circ} C$?
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Solid
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Liquid
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Gas
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None of the above
Water at $30^{\circ}C$ is liquid and it remains in liquid state from $0^{\circ}C$ to $100^{\circ}C$.
Convert $-273^oC$ to Kelvin scale.
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0 K
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273 K
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300 K
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5 K
To convert from the Celsius scale to the Kelvin scale, we add $273$ to the Celsius scale. So, $-273+273=0\ K$
The S.I. unit of length is:
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metre
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kilometre
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foot
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yard
The S.I. unit of length is metre.