Options:
- A. 6.02 x 1023 C/kg
- B. 1.7588 x 1020 C/kg
- C. 9.1095 x 10-31 C/kg
- D. 1.7588 x 1011 C/kg
View Answer
D. 1.7588 x 1011 C/kg
Chemistry
Colour of fluorescene produced by cathode rays depends upon________________?
Options:
- A. Temperature
- B. Pressure
- C. Volume
- D. Composition of glass
View Answer
D. Composition of glass
Planks theory says energy is emitted__________________?
Options:
- A. In continuous manner
- B. Discontinuous manner
- C. Simultaneously
- D. In the form of heat
View Answer
B. Discontinuous manner
Positive rays are produced__________________?
Options:
- A. By burning of gas
- B. By cooling of the gas
- C. By the bombardment of cathode rays on gas molecules
- D. From anode like cathode rays produced from cathode
View Answer
C. By the bombardment of cathode rays on gas molecules
2nd orbit is ___________ away from nucleus of H-atom as compared to 1st orbit is ?
Options:
- A. 2-times
- B. 3-times
- C. 4-times
- D. 6 times
View Answer
C. 4-times
The relationship between energy of a photon of light and its frequency is given by________________?
Options:
- A. de-Broglie duel nature of matter
- B. Bohrs model
- C. Plancks Quantum theory
- D. Rutherfords atomic model
View Answer
C. Plancks Quantum theory
The correct electronic configuration of Cu is ___________________?
Options:
- A. [Ar]4s1
- B. [Ar]4s2
- C. [Ar]3d104s1
- D. [Ar]3d94s2
View Answer
C. [Ar]3d104s1
The velocity of the photon____________________?
Options:
- A. Is independent of wavelength
- B. Depends upon source
- C. Depends upon its frequency
- D. Equals to the square of amplitude
View Answer
A. Is independent of wavelength
Atomic orbits having same energy are called________________?
Options:
- A. Degenerate orbitals
- B. Bonding molecular orbitals
- C. Anti bonding molecular orbitals
- D. Half filled orbitals
View Answer
A. Degenerate orbitals
Atom cannot be divided into simple unitstheorized by________________?
Options:
- A. Rutherford
- B. Dalton
- C. Bohr
- D. Schrodinger
View Answer
B. Dalton