[{"id":158894,"question":"The formula of Brackett series can be obtained by putting in the general formula, the value of n equal to:","choices":[{"text":"<div>one</div>","value":"A"},{"text":"two","value":"B"},{"text":"three","value":"C"},{"text":"four","value":"D"},{"text":"five","value":"E"}],"correctAnswer":4},{"id":158893,"question":"Lyman series in the spectrum of hydrogen exists in the :","choices":[{"text":"Infra-red region","value":"A"},{"text":"Visible region","value":"B"},{"text":"Ultraviolet region","value":"C"},{"text":"Both(A) and (B)","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":3},{"id":158892,"question":"Tick the series which lie/s in. the infra-red region.","choices":[{"text":"Pfund series","value":"A"},{"text":"Brackett series","value":"B"},{"text":"Paschen series","value":"C"},{"text":"All of these","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":4},{"id":158891,"question":"Tick the series which lies in the visible region:","choices":[{"text":"Lyman series","value":"A"},{"text":"Balmer series","value":"B"},{"text":"Paschen series","value":"C"},{"text":"Brackett series","value":"D"},{"text":"P fund series","value":"E"}],"correctAnswer":2},{"id":158890,"question":"Spectrum represents the number of component colours present in certain light in terms of:","choices":[{"text":"Wavelength","value":"A"},{"text":"Frequency","value":"B"},{"text":"Energy","value":"C"},{"text":"Both (A) and (B)","value":"D"},{"text":"All of these","value":"E"}],"correctAnswer":5},{"id":158889,"question":"The process of formation of spectrum is called:","choices":[{"text":"Interference","value":"A"},{"text":"Spectroscopy","value":"B"},{"text":"Dispersion","value":"C"},{"text":"Reflection","value":"D"},{"text":"Botha (A) and (D)","value":"E"}],"correctAnswer":2},{"id":158888,"question":"The results of spectra obtained by Balmer were expressed in 1896 by:","choices":[{"text":"<div>Bohr</div>","value":"A"},{"text":"Rydberg","value":"B"},{"text":"Planck","value":"C"},{"text":"Rutherford","value":"D"},{"text":"Coulomb","value":"E"}],"correctAnswer":2},{"id":158887,"question":"The natural arrangement of colours in the spectrum of white light spectrum is","choices":[{"text":"VIBGYOR","value":"A"},{"text":"ROYBGIV","value":"B"},{"text":"ROYBIGV","value":"C"},{"text":"BIGROYV","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":1},{"id":158886,"question":"Balmer series lies in that region of electromagnetic wave spectrum which is called:","choices":[{"text":"Visible region","value":"A"},{"text":"Invisible region","value":"B"},{"text":"Infra-red region","value":"C"},{"text":"ultraviolet region","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":1},{"id":158885,"question":"Balmer series was identified in:","choices":[{"text":"1685","value":"A"},{"text":"1785","value":"B"},{"text":"1885","value":"C"},{"text":"1985","value":"D"},{"text":"1585","value":"E"}],"correctAnswer":3},{"id":158884,"question":"The first series which was identified in the spectrum of hydrogen is called:","choices":[{"text":"Lyman series","value":"A"},{"text":"Balmer series","value":"B"},{"text":"Paschen series","value":"C"},{"text":"Brackett series","value":"D"},{"text":"Pfund series","value":"E"}],"correctAnswer":2},{"id":152221,"question":"The results of spectra obtained by Blamer were expressed in 1896 by","choices":[{"text":"Bohr","value":"A"},{"text":"Rydberg","value":"B"},{"text":"Planck","value":"C"},{"text":"Rutherford","value":"D"},{"text":"Coulomb","value":"E"}],"correctAnswer":2},{"id":152220,"question":"The range of wavelengths of colurs in the visible colours is","choices":[{"text":"140 nm to 456 nm","value":"A"},{"text":"10 nm to 56 nm","value":"B"},{"text":"410 nm to 656 nm","value":"C"},{"text":"910 nm to 956 nm","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":3},{"id":152217,"question":"Atoms of hydrogen gas can be excited by passing electric current through it when the gas is filled into the discharge tube at a pressure which is","choices":[{"text":"Less than atmospheric pressure","value":"A"},{"text":"Much less than atmospheric pressure","value":"B"},{"text":"Greater than atmospheric pressure","value":"C"},{"text":"Much greater than atmospheric pressure","value":"D"},{"text":"Both C and D","value":"E"}],"correctAnswer":2},{"id":151136,"question":"Consider a photon of continuous X-ray and a photon of characteristics X-ray of same wavelength. Which of the following is/are different for the two photons","choices":[{"text":"Frequency","value":"A"},{"text":"Penetrating power","value":"B"},{"text":"Energy","value":"C"},{"text":"Method of creation","value":"D"},{"value":"E"}],"correctAnswer":4}]