Percentage of nitrogen in air by volume ………………
A) 20.9%
B) 78.1%
C) 0.03%
D) 0.1%
1 Answers
If there is an error of 0.1% in the measurement of the radius of a sphere, find approximately the percentage error in the calculation of the volume of
Correct Answer - 0.003
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A liquid occupies a volume of 2 × 10^-4 m^3 at 0 °C. Calculate the increase in its volume If It is heated to 80 °C.
Given: V0 = 2 × 10-4 m3, T0 = 0°C,T = 80°C, γr = 4 × 10-4 K-1, T – T0 = 80 – 0 = 80°C To find: Increase in volume (∆V) Formula: ∆V = V0γr(T – T0) Calculation: From formula. ∆V =...
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The coefficient of cubical expansion of a solid is the increase in volume per unit original volume at 0 °C per degree rise in _________.
Correct option is: (C) temperature
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The percentage of carbon dioxide in exhaled air is ………
The percentage of carbon dioxide in exhaled air is 4.4
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The percentage of oxygen in inhaled air is
The percentage of oxygen in inhaled air is 21%
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Urea has how much percentage of nitrogen ? A) 36 % B) 46 % C) 56 % D) 44 %
Correct option is B) 46 %
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Percentage of oxygen in air by volume ………………
Correct option is A) 20.9%
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Percentage of argon in air by volume A) 20.9%
Correct option is D) 0.9%
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80 ml of solution contains 20 gr of solute. The mass by volume percentage of the solution is
Correct option is C) 25%
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Two equal like charges in air repel eachother with a force F. By what percentage should each charge be reduced so that the force between them in mediu
This display of light is often called sparking. It occurs due to electric discharge of the electrostatic changes produced in chewing the winter green life saver.
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