Which of the following are true regarding equinoxes? [CDS 1993] 1. They occur on March 21 st and September 23rd 2. They depict equal days and equal. nights on March 21 st and September 23rd on all places of the earth 3. All places on the earth have equal temperature during equinoxes

Related MCQs

• If the earth's axis had not been inclined: 1. temperature distribution would have been uniform 2. days and nights would not have occurred 3. seasons would not· have occurred 4. poles would not have continuous day
• Which of the following are true with regard to temperature control of the atmosphere of a given place? 1. The major temperature contrasts on earth's surface are between land masses and oceans 2. During night, the water surface cools more rapidly than the land surface 3. Temperature generally decreases with latitude on either side of the equator 4. Temperature rises to a maximum during summer and falls to a minimum during winter
• Days and nights are caused by : 1. rotation of the earth on its axis 2. revolution of the earth around the sun 3. inclination of the earth's axis
• Cloudy nights are warmer compared to clear cloudless nights, because clouds
• Consider the following statements regarding the atmosphere of the earth: 1. It is enveloping the earth because of gravity. 2. Its density decreases with increasing height from the surface of the earth. 3. Its characteristic composition is same throughout its height. 4. Amount of pressure it exerts on earth's surface at sea level is called one atm sphere. Which of these statements are correct? [CDS 2001]
• Which of the following are true with regard to igneous rocks? 1. They are formed inside the earth, under great pressure 2. They do not occur in layer 3. They are mostly crystalline in nature 4. They contain fossils
• Which of the following is/are true of world time zones? 1. The world is divided into thirty time zones 2. All time zones of the world are described in term of the number of hours difference between the standard meridian of that zone and the Greenwich Meridian 3. All countries have more than one time zone 4. The time for all places east of Greenwich is designated slow, and time for all places left of Greenwich is designated fast
• Which of the following are the ideal conditions for the phenomenon of temperature inversion to occur? [IAS 2001] 1. Long nights 2. Cloudy sky 3. Calm and stable air 4. Dry air
• At which particular place on earth are day and nights of equal length always?
• Nights are cooler in the deserts than in the plains because: [CDS 2002]