A Donut or Doughnut. Anything in the shape of a torus.

Answer: A) an alloy of Tin and Lead Explanation: Fuse Wire is Made of an alloy of Tin and Lead.   If too high a current flows, the element rises to a higher temperature and either directly melts, or else melts a soldered joint within the fuse, opening the circuit. Thefuse element is made of an alloy of Tin and Lead to provide stable and predictable characteristics.

About 150 - 200 species of plant, insect, bird and mammal become extinct every day or 24 hrs. This is not an accurate but an estimation by U.N. Convention on Biological Diversity and Global Extinction Rates. It is also said that current extinctions were 'up to 100 times higher than the background rate.'

Answer: A) 17 yrs Explanation: Let the present age of Raj and Rajitha be 4x and 9x.Then, according to question,9x = 2(9x-12)-3 => 9x = 27 => x = 3Raj's present age = 4x = 12yrs, After 5 years Raj's age will be 12 + 5 = 17 yrs.

Answer: D) 4 kmph Explanation: Speed of Man = 4.5 kmphSpeed of stream = 1.5 kmphSpeed in DownStream = 6 kmphSpeed in UpStream = 3 kmphAverage Speed = (2 x 6 x 3)/9 = 4 kmph.

Answer: B) Raman Roy Explanation: The National Association of Software and Services Companies (Nasscom) appointed Raman Roy (Managing Director of Quatrro Global Services) as its chairman for 2017-2018.  Rishad Premji (Chief Strategy Officer (CSO), Wipro Limited) has been appointed Vice Chairman. Raman Roy has replaced Mr. CP Gurnani.

Answer: D) Meenakshi Temple Explanation: The Meenakshi Temple in Tamil Nadu's Madurai has been named the cleanest iconic place in India under the 'Swachhata Hi Seva' programme.

Answer: D) All the above Explanation: Most of the emissions of greenhouse gases (GHG) come primarily from burning fossil fuels (coal, hydrocarbon gas liquids, natural gas, and petroleum) for energy use and the major greenhouse gas is of course carbon dioxide (CO2) which comes from burning fossil fuels and land-use change. But methane (CH4) and nitrous oxide (N2O), which mostly come from agriculture and waste, are also significant GHGs and shouldn't be discounted.