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NCERT Book Class 11 Chemistry - Some Useful Conversion Factors PDF
This part of NCERT Book Class 11 Chemistry Appendix 5 Some Useful Conversion Factores helps you learn Class 11 Chemistry step by step. Read the text to understand everything. You can also match your answers using the NCERT Solutions for Class 11 Chemistry.
Some Useful Conversion Factors NCERT Book Class 11 PDF (2026-27)
Common Unit of Mass and Weight
1 pound = 453.59 grams
1 pound = 453.59 grams = 0.45359 kilogram
1 kilogram = 1000 grams = 2.205 pounds
1 gram = 10 decigrams = 100 centigrams
= 1000 milligrams
1 gram = 6.022 × 1023 atomic mass units or u
1 atomic mass unit = 1.6606 × 10–24 gram
1 metric tonne = 1000 kilograms
= 2205 pounds
Common Unit of Volume
1 quart = 0.9463 litre
1 litre = 1.056 quarts
1 litre = 1 cubic decimetre = 1000 cubic
centimetres = 0.001 cubic metre
1 millilitre = 1 cubic centimetre = 0.001 litre
= 1.056 × 10-3 quart
1 cubic foot = 28.316 litres = 29.902 quarts
= 7.475 gallons
Common Units of Energy
1 joule = 1 × 107 ergs
1 thermochemical calorie**
= 4.184 joules
= 4.184 × 107 ergs
= 4.129 × 10–2 litre-atmospheres
= 2.612 × 1019 electron volts
1 ergs = 1 × 10–7 joule = 2.3901 × 10–8 calorie
1 electron volt = 1.6022 × 10–19 joule
= 1.6022 × 10–12 erg
= 96.487 kJ/mol†
1 litre-atmosphere = 24.217 calories
= 101.32 joules
= 1.0132 ×109 ergs
1 British thermal unit = 1055.06 joules
= 1.05506 ×1010 ergs
= 252.2 calories
Common Units of Length
1 inch = 2.54 centimetres (exactly)
1 mile = 5280 feet = 1.609 kilometres
1 yard = 36 inches = 0.9144 metre
1 metre = 100 centimetres = 39.37 inches
= 3.281 feet
= 1.094 yards
1 kilometre = 1000 metres = 1094 yards
= 0.6215 mile
1 Angstrom = 1.0 × 10–8 centimetre
= 0.10 nanometre
= 1.0 × 10–10 metre
= 3.937 × 10–9 inch
Common Units of Force* and Pressure
1 atmosphere = 760 millimetres of mercury
= 1.013 × 105 pascals
= 14.70 pounds per square inch
1 bar = 105 pascals
1 torr = 1 millimetre of mercury
1 pascal = 1 kg/ms2 = 1 N/m2
Temperature
SI Base Unit: Kelvin (K)
K = -273.15°C
K = °C + 273.15
°F = 1.8(°C) + 32
°C =°F - 32 /1.8
Please refer to attached file for NCERT Class 11 Chemistry Appendix 5 Some Useful Conversion Factores
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NCERT Book for Class 11 Chemistry Some Useful Conversion Factors
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