61.  Stars which appear single to the naked eye but are double when seen through a telescope are

62.  The most common format for a home video recorder is VHS. VHS stands for?

63.  Out of the following, which is not emitted by radioactive substance?

64.  Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit

65.  If the potential difference across a parallel plate air capacitor is increased, the electric field intensity between the plates will increase

66.  For over 500 years, paper was only available and sold as single sheets. In 1902, an inventive Australian used half size sheets of paper, a bit of glue and cardboard to create the what?

67.  Which of the following gases is not a noble gas?

68.  N2 content is kept constant in the biosphere due to

69.  Which is not an internet protocol?

70.  Light Year is related to

71.  '.BAK' extension refers usually to what kind of file?

72.  Device used to rectify farsightedness is

73.  Where was the yo-yo invented?

74.  FROZEN FOOD - Who discovered the first practical method of freezing food?

75.  Who invented Airship (rigid)?