51. Consider the following statements about stars: 1. Stars are tiny celestial bodies. 2. They reflect the light of the Sun. Select the correct answer using the code given below: (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2 al on

Solution: (d) Stars are not tiny bodies but they appear small as they are very far from us. Stars have their own light and heat.

52. Rings around planets are? (a) Path along which satellites move. (b) Belts of small debris. (c) Same as orbits around planets. d) Belits between iner planets and outer planets.

Solution: (b) Rings around planets are belts of small debris. All outer planets (Jupiter, Saturn, Uranus and Neptune) have rings around them.

53. Consider the following statements: 1. Constellations are groups of all celestial bodies. 2. Sun is not a part of a constellation Select the correct answer using the code given below: (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

Solution: (b) Constellations are closed groups of stars which form recognizable shapes and patterns. The Sun is the only known star in our galaxy which is not part of a constellation.

54. Consider the following statements about pole star: 1. It points towards the North. 2. It changes position with the rotation of Earth. Select the correct answer using the code given below: (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

Solution: (a) Pole star points towards the North It does not change its position with the rotation of Earth. Hence, it is used to find out directions.

55. Consider the following statements: 1. All celestial bodies have their own light. 2. Planets are celestial bodies. 3. Moon is the nearest star to Earth. Select the INCORRECT answer using the code given below: (a) 2 only (b) 1 and 3 only (c) 2 and 3 only (d) All of the above

Solution: (b) All celestial bodies do not have their own light and heat like planets. Moon is not a star but a satellite and it is the nearest celestial body to the Earth. Mnis not a tar but t th nearest celestial body to

56. Consider the following statements: 1. Jupiter has the largest number of satellites. 2. Being the largest planet, it takes more time to spin than other planets. 3. Juno probe was sent by NASA to the orbit of Jupiter. Select the correct answer using the code given below: (a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) All of the above

Solution: (c) Jupiter takes least time to spin on its axis. It has the largest number of satellites and Juno probe sent by NASA entered the orbit of Jupiter in 2016.

Solution: (c) Only one side of the moon is visible to man at a time because it takes the same time to revolve around the Earth and to complete one spin.

59. Consider the following statements: 1. Pointer stars are part of Saptarishi. 2. Pole star and pointer stars lie on the same line. Select the correct answer using the code given below: (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

Solution: (d) Axial inclination of Uranus is 90 degrees. So it appears to be rolling on its orbit around the Sun.

61. Consider the following statements: 1. All countries have only one time zone. 2. 82/2 E divides India into two equal halves Select the correct answer using the code given below: (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

Solution: (d) There are countries which have multiple time zones due to their vast geographical extent. E.g. USA- 11 time zones, Russia-11 time zones, U.K-9 time zones etc. 82% does not divide India into two equal halves rather it passes through the almost middle of the country.

63. Consider the following statements: 1. 180 E and 180 W are on the same line. 2.Prime Meridian and Equator intersects at Greenwich. Select the correct answer using the code given below: (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

64. Consider the following statements: 1. Earth revolves 10 in 4 minutes. 2. Places east of Prime Meridian will be ahead of Greenwich time. 3. All places along a meridian of longitude have the same time. Select the correct answer using the code given below: (a) 1 and 2 only (b) 2 and 3 only (c) 3 only (d) All of the above

65. Days and nights are caused by? 1. Rotation of the Earth. 2. Revolution of the Earth. Select the correct answer using the code given below: (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

Solution: (a) Days and nights are caused by the rotation of the Earth and change in seasons is caused by the revolution of the Earth.

66. Consider the following statements: 1. A strait connects two landmasses. 2. An isthmus connects two large water bodies. Select the correct answer using the code given below: (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

Solution: (d) A strait connects two large water bodies. Eg. Strait of Hormuz connects Persian Gulf with Gulf of Oman. An isthmus connects two landmasses. Eg. Isthmus of Panama connects North America and South America.

68. Consider the following statements: 1. Bharathi is the only active research station of India in Antarctica. 2. Dakshin Gangotri was India's first research facility in Antarctica. Select the correct answer using the code given below: (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

Solution: (a) Asia is also surrounded by three oceans. It is surrounded by the Pacific Ocean on the east, the Indian Ocean on the south and the Arctic Ocean on the north.

71. Consider the following statements: 1. Australia is the only country which is a continent as well. 2. Australia is surrounded by oceans and seas on all sides 3. Tropic of Capricorn passes through Australia. Select the correct answer using the code given below: (a) 1 and 2 only (b) 2 only (c) 1 and 3 only (d) All of the above

Solution: (d) Australia is called an island continent as it is surrounded by oceans and seas on all sides.

74. Consider the following statements: 1. Equator runs almost through the middle of African continent. 2. Africa is separated from Europe by Mediterranean Sea. Select the correct answer using the code given below: (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

Solution: (b) As height increases the atmospheric pressure decreases. Therefore, when we move up, the oxygen available for breathing becomes less and so the climbers feel difficulty in breathing and need to carry oxygen cylinder to ensure sufficient oxygen supply. fcti n anmes les