When an atom absorbs energy the lines in the spectrum will appear which are_________________?
A. Brighter
B. Darker
C. Colourless
D. Hard to locate
Chemistry Mcqs
The maximum number of electron in a sub shell with ? = 3fs______________?
The maximum number of electron in a sub shell with ? = 3fs______________?
A. 6
B. 10
C. 14
D. 18
The magnetic quantum number (QN) has its values determined directly by the value of_______________?
The magnetic quantum number (QN) has its values determined directly by the value of_______________?
A. Principal (QN)
B. Azimuthal (QN)
C. S (QN)
D. Both A & B
All of the following were theorized by Bohr in his description of the atom except__________________?
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.
The amount of heat absorbed when one mole of a liquid is changed into gas at its boiling point is_____________________?
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
If a physical and chemical change takes place at a constant pressure then the heat change during the process is called__________________?
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
The number amino acid units for each turn of helix on average are____________________?
The number amino acid units for each turn of helix on average are____________________?
A. 21
B. 23
C. 25
D. 27
Which solids are called true solids _______________?
Which solids are called true solids _______________?
A. Metallic
B. Amorphous
C. Crystalline
D. Vitreous
The viscosity of solids is________________?
The viscosity of solids is________________?
A. Infinite
B. Negligible
C. Medium
D. No concept of viscosity in solid
Crystalline solids can be identified easily from their ___________________?
Crystalline solids can be identified easily from their ___________________?
A. Sharp melting point
B. Definite geometry
C. Transition temperature
D. Colour