Related Questions

Pick out the wrong statement.
A Positron is heavier than a proton
B A, β-ray particle is identical with an electron
C The nucleus of a hydrogen atom is identical with a proton
D Mass of an electron is about 1/1800th of the lightest nucleus
Three houses are available in a locality. Three persons apply for the houses. Each applies for one house without consulting others. The probability that all the three apply for the same house is -
A 1/9
B 5/9
C 8/9
D 4/9
শর্তের ভিত্তিতে প্রদত্ত বিন্যাস কার্যকর রাখার জন্য-i. Apply To All আইকন ব্যবহার করা হয়ii. Toggle Filter ব্যবহার করা হয়iii. Apply Filter ব্যবহার করা হয় নিচের কোনটি সঠিক?
A i ও ii
B i ও iii
C ii ও iii
D i, ii ও iii
Pick out the wrong unit conversion of calorific value.
A 1 kcal/kg = 1.8 BTU/lb = 4.186 kJ/kg
B 1 BTU/ft3 = 8.9 kcal/m3 = 0.038 MJ/m3
C 1 BTU/lb = 2.3 kcal/kg
D 1 kcal/m3 = 0.1124 BTU/ft3
Pick out the wrong conversion formula for the conversion of weight units :
A 1 tonne = 1000 kg = 22.046 lbs
B 1 U.S. ton = 907 kg = 0.907 tonne = 0.893 ton
C 1 ton = 2240 lbs = 1016 kg = 1.016 tonnes = 1.12 U.S. tons
D None of these
Pick out the wrong unit conversion of temperature.
A °R = 273 + °F
B Temperature difference of 1°K = 1°C = $$\frac{9}{5}$$ °F
C °C = (F - 32) × 0.555
D °F = (°C + 17.778) × 1.8
Pick out the wrong unit conversion of heat transfer co-efficient.
A 1 kcal/m2.hr.°C = 0.2048 BTU/ft2.hr.°F. = 1.163 W/m2.°K
B 1 kcal/m2.hr.°K = 1.163 W/m2.°C
C 1 W/m2.°C = 0.1761 BTU/ft2.hr.°F
D 1 BTU/ft2.hr.°F = 4.88 kcal/m2.hr.°C = 20.44 kJ/m2.hr°C = 5.678 W/m2.°C
Pick out the wrong unit conversion of mass transfer co-efficient.
A 1 lb/hr.ft3.atm. = 4.8182 kg/hr.m2.bar
B 1 kg/hr.m2.atm= 0.98687 kg/hr.m.bar
C 1 lb/hr.ft2 = 4.8823 kg/hr.m2
D 1 kg/hr.m2 = 4.8823 lb/hr.ft2
Pick out the wrong unit conversion.
A 1 atm = 760 mm Hg = 29.92 inch Hg = 14.7 psi = 1.013 bar = 1.013 kgf/cm2
B 1 kPa = 100 bar
C 1 mm Hg = 1 torr = 133.3 Pa
D None of the above
Pick out the wrong unit conversion of thermal conductivity.
A 1 BTU/ft2.hr.°F/ft = 1.488 kcal/m2.hr.°C/m
B 1 BTU/ft2.hr.°F/inch = 1.488 kcal/m2.hr.°C/m
C 1 kcal/m.hr.°C = 0.672 BTU/ft.hr.°F = 1.163 W/m.°K
D 1 W/cm.°C = 85.985 kcal/m.hr.°C = 57.779 BTU/ft.hr.°F

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