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The solid portion of earth on which we live is called – Lithosphere Gaseous layers that surround the Earth is Atmosphere Water covers a very big area of earth, which is hydrosphere The zone we find land, water and air together – biosphere Earth’s surface divided into two main category – Continents and ocean basins Seven continents – Asia, Europe, Africa, North America, South America, Australia and Antarctica Asia is largest continent Through which tropic of cancer, the equator and tropic of Capricorn pass - Africa Maitri and Dakshin Gangotri are research center and situated in – Antartica Australia is smallest continent Earth is called as blue planet Only ocean to be named after country - Indian ocean SUBSCRIBE TO OUR YOUTUBE FOR DAILY COMPETITIVE EXAMS  VIDEOS

Saptarishi is part of which constellation – Ursa Major Which star is pole star – North Star Number of Planets in solar system – 8 Distance of Sun from Earth – 150million km Third largest Plane – Earth Shape of Earth – Geoid Natural satellite of Earth – Moon Distance between sun and moon – 3,84,400 km Number of days moon takes to move around sun – 27 First man to land on Moon – Neil Armstrong Line which divides earth into equal parts – Equator Circle that divides day from night – Circle of illumination Number of days Earth take around to revolve around sun - 3654/1 Shape of path of earth around sun – Elliptical On what basis our season changes – On position of Earth Longest day on earth takes place on – 21st June Whole Earth experience equal day and night on – 21st March and 23rd September

1. Four bells ring at the intervals of 5, 6, 8 and 9 seconds. All the bells ring simultaneously at the same time. They will again ring simultaneously after (1) 6 minutes (2) 12 minutes (3) 18 minutes (4) 24 minutes Ans. 1 2. Three bells ring simultaneously at 11 a.m. They ring at regular intervals of 20 minutes, 30 minutes, 40 minutes respectvely. The time when all the three ring together next is (1) 2 p.m. (2) 1 p.m. (3) 1.15 p.m. (4) 1.30 p.m. Ans. 2 3. The greatest number of four digits which when divided 3, 5, 7, 9 leave remainders 1, 3, 5, 7 repspectvely is (1) 9763 (2) 9764 (3) 9766 (4) 9765 Ans. 3 4. Five bells begin to toll together and toll respectively at intervals of 6, 7, 8, 9 and 12 seconds. After how many seconds will they toll together again ? (1) 72 Sec. (2) 612 Sec. (3) 504 Sec. (4) 318 Sec. Ans. 3 5. The number nearest to 10000, which is exactly divisible by each of 3, 4, 5, 6, 7 and 8, is : (1) 9240 (2) 10080 ...