The periodic rise and fall of the sea level on the earth, gives rise to tides. This is related to

A. the position of the moon with reference to the earth and the gravitational pull exerted mainly by the moon and partly by the sun
B. infrared rays from the sun
C. ultraviolet rays from the sun
D. None of the above
✅ The correct answer is option A.
Tides are the short term periodic rise and fall of the world’s oceans. They are due to the combined effects of gravitational attraction and the revolution of the Earth-moon system about its common centre of mass.

The southern Deccan area is in a rain shadow and receives only

A. 50 to 1000 mm of rainfall a year
B. 100 to 200 mm of rainfall a year
C. 200 to 400 mm of rainfall a year
D. 50 to 400 mm of rainfall a year
✅ The correct answer is option A.
The southern Deccan area is in a “rain shadow” and receives only fifty to 1,000 millimeters of rainfall a year. Temperature ranges are wide–from some 15°C to 38°C–making this one of India’s most comfortable climatic areas.

The mountains that separate European and Arctic Russia are

A. the Pyranees
B. the Balkans
C. the Carpathians
D. the Urals
✅ The correct answer is option D.
Ural Mountains, also called the Urals, Russian Uralskie Gory or Ural, mountain range forming a rugged spine in west-central Russia and the major part of the traditional physiographic boundary between Europe and Asia.

The panama canal links

A. Canada with Greenland
B. North America with South America
C. Siberia with Greenland
D. None of the above
✅ The correct answer is option B.
The panama canal links North America with South America. The Panama Canal (Spanish: Canal de Panamá) is an artificial 82 km (51 mi) waterway in Panama that connects the Atlantic Ocean with the Pacific Ocean. The canal cuts across the Isthmus of Panama and is a conduit for maritime trade.