Atomic Structure Set 5

Results

#1. Goldstein discovered that besides the cathode rays, another type of rays are produced in the discharge tube which are called

alpha rays

beta rays

positive rays

gamma rays

#2. The e/m value for the positive rays in the discharge tube depends upon

nature of electrode use

nature of gas used

composition of the gas

pressure

#3. The distance between the two adjacent crests or troughs is called

#4. The distance between the two adjacent crests or troughs is called

wave number

frequency

wavelength

amplitude

#5. The value of Planck’s constant “h” is

6.625 x 10–34 cal

6.625 x 10–34 J sec

6.625 x 10–34 kJ

6.625 x 10–34 k cal

#6. In the Bohr’s model of atom the electron in an energy level emits or absorbs energy only when it

remains in the same energy level

dies out

changes its energy level

jumps away

#7. The energy associated with an electron resolving in first orbit is

– 2.178 x 10–18 k J/mol

– 1313.31 k J/mol

– 328.32 k J/mol

– 82.08 k J/mol

#8. The regions of spectrum are

three

seven

eight

five

#9. The dispersion of the components of white light when it is passed through prism is called

rainbow

light pattern

refraction

spectrum

#10. Which of the following colours has the shortest wavelength in the visible spectrum of light

red

blue

violet

green

Finish