Advertisements
Advertisements
प्रश्न
Define one mole.
Advertisements
उत्तर
One mole of any substance is the amount of that substance which contains the Avogadro number (NA) of particles (such as atoms or molecules).
APPEARS IN
संबंधित प्रश्न
The susceptibility of magnesium at 300 K is 2.4 x 10-5. At what temperature will the susceptibility increase to 3.6 x 10-5?
The substance which allows heat radiations to pass through is _______.
(A) iron
(B) water vapour
(C) wood
(D) dry air
Which of the following pairs may give equal numerical values of the temperature of a body?
A body A is placed on a railway platform and an identical body B in a moving train. Which of the following energies of B are greater than those of A, as seen from the ground?
(a) Kinetic
(b) Total
(c) Mechanical
(d) Internal
When a solid melts or a liquid boils, the temperature does not increase even when heat is supplied. Where does the energy go?
Which of the following pairs of physical quantities may be represented in the same unit?
A metre scale made of steel is calibrated at 20°C to give correct reading. Find the distance between the 50 cm mark and the 51 cm mark if the scale is used at 10°C. Coefficient of linear expansion of steel is 1.1 × 10–5 °C–1.
A circular hole of diameter 2.00 cm is made in an aluminium plate at 0°C. What will be the diameter at 100°C? α for aluminium = 2.3 × 10–5 °C–1.
In hot summer after a bath, the body’s __________.
Explain the meaning of heat and work with suitable examples.
