Related Questions

Chemical reaction rate of a component depends upon the
A Composition of the component only
B Temperature of the system
C Pressure of the system
D All of the above
For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the __________ adsorption.
A Physical
B Chemical
C Both A and B
D Neither A nor B
As an atom absorbs energy, ........ increases and the atom is said to be excited.
A as its energy level
B it is energy level
C the energy level of it
D the energy level
As an atom absorbs energy , ................. increases, and the atom is said to be excited .
A its energy level
B as its energy level
C it is energy level
D the energy level of its
As an atom absorbs energy,_____ increases, and the atom is said to be excitef
A its energy level
B as its energy level
C it is energy level
D the energy level of its
The oxygen atom is ________ times heavier than the hydrogen atom.
A 2
B 8
C 16
D 32
If the size of the nucleus of an atom is compared with a cricket ball, then the radius of the atom is approximately equal to how many kilometres?
A 0.5
B 0.005
C 0.05
D 5
Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The reatio of chemical potential to free energy of a pure substance at oconstant temperature and pressure is
A 0
B 1
C ∞
D None of these
Smoking tells upon our body .Here 'tell upon' means ____ .
A benefits
B harms
C indicates
D strengthens
A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is $$\tau $$. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be
A $$\frac{\tau }{2}$$
B $$\tau $$
C $$2\tau $$
D $$4\tau $$

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