Hello In question one, framing of question is wrong. You must ask ‘largest gland among the following’ otherwise it creates controversy that largest gland is liver and it is not mentioned in options. In question two, there are some cases of cosmic rays move in light speed. We can not blindly believe cosmic rays has less velocity than light. We sometimes take both the rays have same velocity. Both 19 and 20 th questions create a controversy. In 19th question you asked about mass of electron nd in 20th, about nature. If electron has mass then it comes under particle nature also. We can conclude electron exhibits both particle as well as wave nature( according to de broglies wave equations and so on). And in discharge tube experiment, electron was earlier named as cathode rays. So I think correct answer for 20th question is cathode rays.
In question one, framing of question is wrong. You must ask ‘largest gland among the following’ otherwise it creates controversy that largest gland is liver and it is not mentioned in options.
In question two, there are some cases of cosmic rays move in light speed. We can not blindly believe cosmic rays has less velocity than light. We sometimes take both the rays have same velocity.
Both 19 and 20 th questions create a controversy. In 19th question you asked about mass of electron nd in 20th, about nature. If electron has mass then it comes under particle nature also. We can conclude electron exhibits both particle as well as wave nature( according to de broglies wave equations and so on). And in discharge tube experiment, electron was earlier named as cathode rays. So I think correct answer for 20th question is cathode rays.