304. What is the interval between a high
tide and neaptide at a given place ?
(a) 12 hours
(b) 12 hours 26 minutes
(c) 15 hours 30 minutes
(d) 24 hours
Ans: (b)
305. The sea bed sloping gradually and
bordering the continent is known as :
(a) Coast
(b) Continental Shelf.
(c) Continental Platform.
(d) Continental Slope.
306. A special type of well in which
water rises automatically under the
pressure of a column of water to the
ground surface through a hole is known
as
(a) Artisian well (b) Spring
(c) Hot spring (d) Geyser
Ans: (a)
307. Which of the following oceans has
the shape of the English alphabet S ?
(a) Arctic Ocean
(b) Indian Ocean
(c) Atlantic Ocean
(d) Pacific Ocean
Ans: (c)
308. Which from the following, is a
landlocked sea ?
(a) Timor Sea
(b) Arafura Sea
(c) Greeland Sea
(d) Aral Sea
Ans: (d)
309. A place where there is constant
intermingling of salt water and fresh
water is ____
(a) Estuary (b) Delta
(c) Gulf (d) Bay
Ans: (a)
310. The deepest ocean of the world is
(a) Atlantic Ocean
(b) Arctic Ocean
(c) Indian Ocean
(d) Pacific Ocean
Ans: (d)
311. Tides in the sea have stored in them :
(a) Hydraulic energy
(b) Kinetic energy
(c) Gravitational potential energy
(d) A combination of all the above three
forms of energy
Ans: (c)
312. The deepest surface depression on
the earth is
(a) Kurile Trench
(b) Mariana Trench
(c) Tonga-Kermadec Trench
(d) Bentley Subglacial
Ans: (b)
313. Echo sounding is the tech-nique
applied to—
(a) measure the depth of the sea
(b) measure the amplitude of sound waves
(c) record earthquake waves
(d) record the density of air in the atmosphere
Ans: (a)
314. El Nino is
Ans: (b)
PART–IV : Hydrosphere and Oceanography
317. Which current is responsible for
increase in the temperature of the
western Europe ?
(a) Labrador current
(b) Gulf stream
(c) Canari current
(d) North Equatorial current
Ans: (d)
318. Tsunamis are cuased by
(a) mixing of cold and warm currents
(b) earthquakes
(c) changes in sea level
(d) volcanic eruption
Ans: (b)
319. Seismic sea waves which approach
the coasts at greater force are known as
(a) Tides (b) Tsunami
(c) Current (d) Cyclone
Ans: (b)
320. Which of the following is a cold
ocean current ?
(a) Humboldt current
(b) Brazil current
(c) Oyashio current
(d) Canary current
Ans: (a)
321. Sea breeze is formed during
(a) Day time (b) Night time
(c) Both (d) Seasonal
Ans: (a)
322. The coral reefs are the marine
counterparts of
(a) Temperate forests
(b) Tropical rain forests
(c) Savannahs
(d) Scrubland
Ans: (b)
323. The deepest ocean is(a) Arctic (b) Pacific
(c) Atlantic (d) Indian
Ans: (b)
324. Two seas or water-bodies
connected by a narrow stretch of water is known as a
Ans: (b)
325. Waves approaching the shore is
known as
(a) Swash (b) Tsunami
(c) Currents (d) Tide
Ans: (b)
326. Atoll is a kind of
(a) sand-dune (b) lake
(c) sandbar (d) inland sea
Ans: (d)
327. The coastal part of water bodies of
the oceans which is structurally part of
the mainland of the continents is called
the
(a) Isthmus
(b) Oceanic ridge
(c) Continental shelf
(d) Continental slope
Ans: (c)
328. Which one of the following is not a
cold ocean current?
(a) California (b) Oyashio
(c) Kuroshio (d) Ganaries
Ans: (c)
329. The term territorial water means
(a) The water found within the country in
form of rivers and lakes
(b) The water secured from other countries
(c) The water which is supplied to other
countries
(d) Water of the sea located close to the coast
of a country
Ans: (d)
330. The ocean which touches the Asian
and American shores is
(a) Atlantic (b) Indian
(c) Antarctic (d) Pacific
Ans: (d)
331. Which from the following can cause
a tsunami ?
(a) Volcano (b) Avalanche
(c) Tornado (d) Earthquake
Ans: (d)
332. The coastal part of water bodies of
the oceans which is structurally part of
the mainland of the continents is called
(a) isthumus
(b) oceanic ridge
(c) continental shelf
(d) continental slope
Ans: (c)
333. Mariana Trench is found in
(a) Atlantic Ocean
(b) Pacific Ocean
(c) Indian Ocean
(d) Arctic Ocean
Ans: (b)
316. The largest ocean is
(a) Atlantic Ocean
(b) Indian Ocean
(c) Arctic Ocean
(d) Pacific Ocean
315. The narrow stretch of water
connecting two Seas is called
(a) Bay (b) Peninsula
(c) Isthamus (d) Strait
334. Which one of the following ocean
currents does not occur in Atlantic
Ocean ?
(a) Gulf stream
(b) Brazil current
(c) Peru current
(d) Canary current
Ans: (c)
335. The main cause of Tsunami is :
(a) Volcanoes
(b) Cyclones
(c) Earthquake on sea floor
(d) Moon‟s attraction
Ans: (c)
336. Tides are caused by the
gravitational pull of the
(a) Earth on the Moon
(b) Earth on the Sun
(c) Sun and Moon on the Earth
(d) Moon on the Earth
Ans: (c)
337. Tides in the sea are caused by
(a) effect of Sun
(b) effect of Moon
(c) eombined effect of Moon and Sun
(d) gravitational force of Earth and Sun
Ans: (c)
338. Sea water is saltier than rain water
because
(a) rivers wash away salts from earth and
pour them into the sea
(b) sea beds have salt producing mines
(c) sea animals are salt producing
(d) the air around the sea is saltish
Ans: (a)
339. In sea, plants are restricted up to the
depth of
(a) 20 m (b) 200 m
(c) 1000 m (d) 2000 m
Ans: (b)
340. El Nino occurs over
(a) Atlantic Ocean
(b) Indian Ocean
(c) Pacific Ocean
(d) Mediterranean Sea
Ans: (c)
341. The Sargasso sea is situated in the :
(a) Atlantic Ocean
(b) Pacific Ocean
(c) Indian Ocean
(d) Arctic Ocean
Ans: (a)
342. The eastward continuation of the
Brazil current is called:
(a) South Atlantic drift
(b) Counter Equatorial drift
(c) West Atlantic drift
(d) North Atlantic drift
Ans: (a)
343. The rapidly growing mass of
phytoplankton covering the surface
water of a lake or pond is known as :
(a) Eutrophication
(b) Water bloom
(c) Water pollution
(d) Water hyacinth
Ans: (a)
344. Which one of the following is a
warm ocean current ?
(a) Kurile (b) Canary
(c) Labrador (d) Gulf Stream
Ans: (d)
345. The rhythmic rise and fall of ocean
water twice in a day is called
(a) Tide (b) Ocean current
(c) Wave (d)Water cycle
Ans: (a)
346. Neap tides are
(a) Strong (b) Weak
(c) Medium (d) Very strong
Ans: (b)
347. The Ocean with the largest surface
area is
(a) Arctic Ocean
(b) Atlantic Ocean
(c) Indian Ocean
(d) Pacific Ocean
Ans: (d)
348. The largest current, because of its
dark waters is known as the „black
current‟ and that is :
(a) Gulf Stream
(b) Kuroshio Current
(c) California Current
(d) Antarctic Current
Ans: (b)
349. Spring tides occur on
(a) New moon day only
(b) Full moon day as well as on new moon day
(c) Full moon day only
(d) The day when the moon‟s position is in its
first quarter
Ans: (b)
350. Best way to conserve our water
resources :
(a) Rain water harvesting
(b) Sustainable water utilization
(c) Encouragement of natural regeneration of
vegetation
(d) All of the options mentioned here.
Ans: (d)
351. The smallest ocean is :
(a) Atlantic (b) Pacific
(c) Indian (d) Arctic
Ans: (d)
352. How much of world‟s surface is
covered by water?
(a) 55% (b) 70%
(c) 80% (d) 25%
Ans: (b)
353. The largest reservoir of fresh water
is :
(a) Glaciers (b) Ground Water
(c) Ponds (d) Lakes
Ans: (a)
354. A semi enclosed coastal body of
water which has a free connection with
the open sea is called
(a) Estuary (b) Fjord
(c) Cove (d) Ria coast
Ans: (a)
355. The „EL Nino‟ phenomena which
sparks climatic extreme around the
globe, originates in the
(a) Sea of China
(b) Pacific Ocean
(c) Indian Ocean
(d) Atlantic Ocean
Ans: (b)
356. Terrigenous deposits are found in
(a) Deep Sea Plain
(b) Ocean Trenches
(c) Rift Valley
(d) Continental Shelf and Slope
Ans: (d)
357. „El Nino‟ that affects our Monsoons,
has its origins in
(a) The Indian Ocean
(b) The Himalayan Plateau
(c) The Pacific Ocean
(d) The Arabian Peninsula
Ans: (c)
358. Where is the Great Barrier Reef
located ?
(a) Pacific Ocean
(b) Indian Ocean
(c) Atlantic Ocean
(d) Arctic Ocean
Ans: (a)
359. A wide inlet of the sea usually
concave in shape, is termed as a:
(a) Strait (b) Sound
(c) Bay (d) Fjord
Ans: (c)
360. The gentle „seaward sloping‟ surface
from the coasts is called __________.
(a) Continental shelf
(b) Continental rise
(c) Abyssal plains
(d) Submarine ridges
Ans: (a)
361. Ring of Fire is found commonly in
_____
(a) Pacific Ocean
(b) Atlantic Ocean
(c) Indian Ocean
(d) Arctic Ocean
Ans: (a)
362. “Great Barrier Reef”, the world‟s
largest Coral reef is located in
(a) Caribbean Islands
(b) Australia
(c) Philippines
(d) Indonesia
Ans: (b)
363. The deepest trench of the Indian
Ocean is
(a) Java trench
(b) Aleutian trench
(c) Atacama trench
(d) Tizard trench
Ans: (a)
364. “Tsunami” is the name given to
which of the following?
(a) Earthquake
(b) Cyclone
(c) Tidal Waves
(d) Undersea Waves
Ans: (d)
365. The tides in the sea are primarily
due to
(a) the atmospheric effect of the Earth
(b) the gravitational effect of Venus on the
Earth
(c) the gravitational effect of the Sun on the
Earth
(d) the gravitational effect of the Moon on the
Earth
Ans: (d)
366. A stretch of sea water, partly or fully
separated by a narrow strip from the
main sea is called
(a) Bay (b) Isthmus
(c) Lagoon (d) Strait
Ans: (c)