1386: Who among the following invented Lasers?
(a) Theodore Maiman
(b) William Morton
(c) Francis Crick
(d) Denis Papin
1387: Which one of the following is part of the electoral college for the election of the President of India but does not form part of the forum for his impeachment?
(a) Lok Sabha
(b) Rajya Sabha
(c) State Legislative Councils
(d) State Legislative Assemblies
1388: Which one of the following statements is correct with reference to our solar system ?
(a) The Earth is the densest of all the planets in our solar system
(b) The predominant element in the composition of Earth is silicon
(c) The Sun contains 75 per cent of the mass of the solar system
(d) The diameter of the Sun is 190 times that of the Earth
1389: Annie Besant was
1. responsible for starting the Home Rule Movement
2. the founder of the Theosophical Society
3. once the President of the Indian National Congress
Select the correct statement, statements using the codes given below.
(a) 1 only
(b) 1 and 3 only
(c) 2 and 3 only
(d) 1, 2 and 3
1390: Which of the following pairs is not correct?
(a) Seismograph : Earthquakes
(b) Anemometer : Speed of the wind
(c) Hygrometer : Water vapour content of the atmosphere
(d) Lactometer : Specific gravity of liquids