The magnetic quantum number (QN) has its values determined directly by the value of_______________?
A. Principal (QN)
B. Azimuthal (QN)
C. Spin (QN)
D. Both A & B
Submitted by :- Jamil Ahmed
CHEMISTRY
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All of the following were theorized by Bohr in his description of the atom except__________________?
A. Angular momentum of electrons in multiples of h/2?
B. Electrons revolve in discrete circular orbits
C. Energy of each electron is directly proportional to n2
D. Electrons radiate energy continuously in a given orbit.
Submitted by :- Jamil Ahmed
The amount of heat absorbed when one mole of a liquid is changed into gas at its boiling point is_____________________?
A. Molar heat of sublimation
B. Molar heat of fusion
C. Molar heat of vapourization
D. Latent heat of that liquid
Submitted by :- Jamil Ahmed
If a physical and chemical change takes place at a constant pressure then the heat change during the process is called__________________?
A. Heat of transition
B. Heat of fusion
C. Enthalpy change
D. All of above
Submitted by :- Jamil Ahmed
Which solids are called true solids _______________?
A. Metallic
B. Amorphous
C. Crystalline
D. Vitreous
Submitted by :- Jamil Ahmed
The viscosity of solids is________________?
A. Infinite
B. Negligible
C. Medium
D. No concept of viscosity in solid
Submitted by :- Jamil Ahmed
Crystalline solids can be identified easily from their ___________________?
A. Sharp melting point
B. Definite geometry
C. Transition temperature
D. Colour
Submitted by :- Jamil Ahmed
A malleable solid is one which can be_________________?
A. Converted into wires
B. Converted into thin sheets
C. Melted easily
D. All of the above
Submitted by :- Jamil Ahmed
Planks theory says energy is emitted__________________?
A. In continuous manner
B. Discontinuous manner
C. Simultaneously
D. In the form of heat
Submitted by :- Jamil Ahmed
The value of e/m ratio of electron is________________?
A. 6.2 x 1023 C/kg
B. 1.7588 x 12 C/kg
C. 9.195 x 10-31 C/kg
D. 1.7588 x 1011 C/kg
Submitted by :- Jamil Ahmed