Answer: A) Biosphere Explanation: A biosphere is the sum of all the ecosystems established on planet Earth. An ecosystem is an area in which the plants and animals all interact to create a living environment. Therefore ecosystem is a smaller unit of earth, all ecosystems together form the earth.

Answer: B) INS Sarvekshak Explanation: Indian Navy’s survey vessel INS Sarvekshak has become the India’s first warship to install solar power system on board. The solar power system works on sunlight and hence is 100% per cent reliable for power source that can be used for communication equipment, battery charging and general lightings onboard round the clock with battery outputs during night. The system is maintenance free.

A microwave. Generally when you run a microwave for '99' it runs for 1 minute and 39 seconds. '100' runs for 1 minute.

Answer: C) 165 mts Explanation: Let the length of the train = L mts Relative speed of train and man = 74 - 8 = 66 kmph = 66 x 5/18 m/s => 66 x 5/18 = L/9 => L = 165 mts.

Answer: B) June 21 Explanation: The World Music Day is celebrated across the world on 21 June.   The day is also known as 'Fete de la Musique' after a music festival that began in France in 1982.   This Day was first celebrated on 21st June 1982.

Answer: D) Shri Arun Jaitley Explanation: 1. Shri Narendra Modi Prime Minister and also in-charge of:– Ministry of Personnel– Public Grievances and Pensions– Department of Atomic Energy– Department of Space All important policy issues and all otherportfolios not allocated to any Minister. 2. Shri Raj Nath Singh         -       Minister of Home Affairs3. Smt. Sushma Swaraj       -       Minister of External Affairs4. Shri Arun Jaitley             –       Minister of Finance                                        –       Minister of Corporate Affairs5. Shri M. Venkaiah Naidu   –       Minister of Urban Development                                        –       Minister of Housing and                                                 Urban Poverty Alleviation                                        –       Minister of Information & Broadcasting6. Shri Nitin Jairam Gadkari –      Minister of Road Transport                                                 & Highway                                                – Minister of Shipping7. Shri Arun Jaitley(Additional Charge)             -      Minister of Defence8. Shri Suresh Prabhu          -     Minister of Railways9. D.V Sadananda Gowda    -      Minister of Statistics & Programme Implementation10. Sushri Uma Bharati       -      Minister of Water Resources,                                                River Development & Ganga Rejuvenation11. Mukhtar Abbas Naqvi    -      Minister of Minority Affairs12. Shri Ramvilas Paswan   -      Minister of Consumer Affairs, Food & Public Distribution13. Shri Kalraj Mishra         -      Minister of Micro, Small & Medium Enterprises14. Maneka Sanjay Gandhi  -     Minister of Women & Child Development15. Shri Ananth Kumar       -     Minister of Chemicals & Fertilizers16. Shri. Ravi Shankar Prasad – Minister of Law & Justice                                            – Minister of Electronics & Information Technology17. Shri Jagat Prakash Nadda  - Minister of Health & Family Welfare18. Ashok Gajapathi Raju Pusapati -  Minister of Civil Aviation19. Shri. Anant Geete            -          Minister of Heavy Industries & Public Enterprises20. Smt. Harsimrat Kaur Badal -        Minister of Food Processing Industries21. Shri Narendra Singh Tomar – Minister of Rural Development                                              – Minister of Panchayati Raj                                              – Minister of Drinking Water & Sanitation22. Shri Chaudhary Birender Singh - Minister of Steel23. Shri Jual Oram                   -      Minister of Tribal Affairs24. Shri Radha Mohan Singh     -      Minister of Agriculture & Farmers Welfare25. Shri Thawar Chand Gehlot   -      Minister of Social Justice & Empowerment26. Smt. Smriti Irani                 -      Minister of Textiles27. Dr Harsh Vardhan                –     Minister of Science & Technology                                               –     Minister of Earth Sciences 28. Prakash Javadekar               -     Human Resource Development

Answer: C) 7 days Explanation: 1 boy's 1 day work = 1/70 1 girl's 1 day work = 1/140 (5 boys + 10 girls)'s 1 day work = (5/70 + 10/140) = (1/14 + 1/14) = 1/7   5 boys and 10 girls will complete the work in 7 days.

Answer: B) Australia Explanation: In the summit clash of the 37th and final edition of the Hockey Champions Trophy at Breda, the Netherlands, India lost to defending champions Australia via penalty shoot-off. The match went into the shoot-off after both the teams were locked at 1-1 in regulation time.