All Questions page - 452

Stars twinkle but planets do not twinkle because

(1) they emit light of a constant intensity

(2) their distance from the earth does not change with time

(3) they are very far away from the earth resulting in decrease in the intensity of light

(4) they are nearer to the earth and hence we receive a greater amount of light and therefore minor variations in intensity are not noticeable

The outermost layer of Sun is called

(1) Lithosphere

(2) Chromosphere

(3) Photosphere

(4) Corona

On which date in India likely to experience the shortest day?

(1) December 22

(2) March 21

(3) June 22

(4) September 23

When does solar eclipse take place?

(1) When the sun is between the moon and earth

(2) When the earth is between the moon and sun

(3) When the moon is between the sun and earth

(4) When the moon does not lie on the line joining the sun and earth

When does the sunshine vertically on the Equator?

(1) Throughout the year

(2) For six months

(3) Twice a year

(4) Once a year

If a star is bigger than Sun, but not more than twice as big, it will turn into a _______.

(1) Pulsar

(2) Maxima

(3) Avenger

(4) Discover

Which among the following statements is true regarding International Dateline?

(1) It is 180° Longitude

(2) It is a straight line

(3) It is a big circle

(4) It is a curved line beyond the earth

The sunlight is available 24 hours on the longest day at which of the following latitudes of the earth?

(1) 49°

(2) 66½°

(3) 63°

(4) 69°51'

The Grand Canyon is located on the :

(1) Colorado River

(2) Rhine River

(3) Tapi River

(4) Niger River

Extensive deserts occur in the western tropical regions of continents because :

(1) of easterly trade winds.

(2) cold ocean currents flow along the western coasts.

(3) of the effect of both the offshore easterly trade winds and cold ocean currents.

(4) the rate of evaporation is greater along with the western margin areas.

The deposits of the ancient Tethys Sea were folded to form the :

(1) Himalayas

(2) Rockies

(3) Andes

(4) Alps

Which one of the following types of erosion is responsible for the formation of Chambal Ravines?

(1) Splash

(2) Sheet

(3) Rill

(4) Gully

The west to the east extension of the Himalayas is from

(1) Indus gorge to Dihang gorge

(2) K2 to Chomoihari

(3) Nanga Parbat to Namcha Barwa

(4) Rakaposhi to Lohit river

Most of the devastating earthquakes are usually caused by

(1) Eustatic movement

(2) Isostatic adjustment

(3) Collision of earth plates

(4) Volcanic eruption

Which one of the following is the greatest circle ?

(1) Arctic Circle

(2) the Equator

(3) Tropic of Cancer

(4) Tropic of Capricorn

Hanging Valley is formed due to the action of

(1) Glacier

(2) River

(3) Ocean

(4) Wind

Mushroom Rocks are the typical land forms seen in

(1) River Valleys

(2) Mountain tops

(3) Coastal areas

(4) Deserts

Basaltic lava is found in the

(1) Deccan Trap

(2) Himalayas

(3) Indo-Gangetic Plain

(4) North-Eastern Hills