1. Which among the following is the largest tropical lake in the world?
[A] Lake Victoria
[B] Lake Malawi
[C] Lake Kivu
[D] Lake Turkana
Show Answer
Correct Answer: A [Lake Victoria]
Notes:
Lake Voctoria is the largest tropical lake in the world. It is one of the great African lake.
2. Underground Hamza River was found below the basin of which among the following rivers?
[A] Nile River
[B] Amazon River
[C] Mississippi River
[D] Congo River
Show Answer
Correct Answer: B [Amazon River]
Notes:
Hamza River is a basically underground slow flowing aquifer that is around 6000 kms long at depth of 4 kilometers below the amazon basin. Hamza river and Amazon River make a geologically unusual instance of a twin-river system flowing at different levels of the Earth’s crust.
3. A star at which among the following locations would appear to twinkle more than others normally?
[A] Straight up in Observer’s line of sight
[B] Stars closer to the horizon
[C] Stars closer to poles
[D] None of them
Show Answer
Correct Answer: B [Stars closer to the horizon]
Notes:
Stars seem to twinkle or change their brightness all the time. In fact, most stars shine with a steady light. The movement of air (sometimes called turbulence) in the Earth`s atmosphere causes the starlight to get slightly bent as it travels from the distant star through the atmosphere to us on the ground. Some of the light reaches us directly but some gets bent slightly. This gives the illusion of twinkling. Stars closer to the horizon appear to twinkle more than others. This is because the atmosphere is a lot denser near the horizon than between the Earth and a star higher in the sky.
4. Which among the following is a Tectonic Wetland?
[A] Tsomoriri in Jammu and Kashmir
[B] Nilnag in Jammu and Kashmir
[C] Loktak Lake in Manipur
[D] Deepor Beel in Assam
Show Answer
Correct Answer: B [Nilnag in Jammu and Kashmir]
Notes:
Tectonic Wetlands examples are Nilnag in Jammu and Kashmir, Khajjiar in Himachal Pradesh, and Nainital and Bhimtal in Uttaranchal. They are formed due to tectonic activity.
5. In which region do we find the belt of Doldrums?
[A] Polar region
[B] Sub-tropical region
[C] Temperate region
[D] Equatorial region
Show Answer
Correct Answer: D [ Equatorial region]
Notes:
Doldrums or equatorial belt of calms, area around the earth centered slightly north of the equator between the two belts of trade winds. The large amount of solar radiation that arrives at the earth in this area causes intense heating of the land and ocean. This heating results in the rising of warm, moist air; low air pressure; cloudiness; high humidity; light, variable winds; and various forms of severe weather, such as thunderstorms and squalls. Hurricanes originate in this region. The doldrums are also noted for calms, periods when the winds disappear, trapping sailing vessels for days or weeks.
6. Identify the wind with the help of given information:
- The wind is a cold, dry & dust-laden wind
- It blows from the Sahara Desert over the West African subcontinent into the Gulf of Guinea
- The wind is also known as “the Doctor”
Select the correct answer from options given below:
[A] Khamsin
[B] Harmattan
[C] Sirocco
[D] Mistral
Show Answer
Correct Answer: B [Harmattan]
Notes:
Harmattan wind is also known as "the Doctor" in Niger, as this cold wind brings relief from oppressive heat in the region.
7. In context with the heavenly bodies, which among the following shows “lighthouse effect”?
[A] Quasar
[B] White Dwarf
[C] Red Giant
[D] Pulsar
Show Answer
Correct Answer: D [ Pulsar]
Notes:
Pulsar emit radio (electromagnetic) signals at regular interval of time. Pulsars are a kind of neutron stars and the emission is detectable when the source of beam of the electromagnetic waves is towards Earth. This is known as Light house effect and is gives a pulsed nature to pulsars.
8. Marble comes under which category of rocks?
[A] Sedimentary
[B] Igneous
[C] Metamorphic
[D] None of the above
Show Answer
Correct Answer: C [Metamorphic]
Notes:
Marble is a metamorphic rock composed of recrystallized carbonate minerals, most commonly calcite or dolomite. Marble is typically not foliated, although there are exceptions.
9. Which one of the following statements is not correct?
[A] Gulfs with narrow fronts and wider rears experience high tides.
[B] Tidal currents take place when a gulf is connected with the open sea by a narrow channel.
[C] Tidal bore occurs when a tide enters the narrow and shallow estuary of a river.
[D] The tidal nature of the mouth of the river Hooghly is of crucial importance to Kolkata as port.
Show Answer
Correct Answer: B [Tidal currents take place when a gulf is connected with the open sea by a narrow channel.]
Notes:
Tidal currents occur in conjunction with the rise and fall of the tide. The vertical motion of the tides near the shore causes the water to move horizontally, creating currents. When a tidal current moves toward the land and away from the sea, it “floods.”
10. Which Island forms the part of the southern end of Maritime Southeast Asia?
[A] Rhodes Island
[B] Malta Island
[C] Sardinia Island
[D] Timor Island
Show Answer
Correct Answer: D [Timor Island]
Notes:
Timor Island is located at the southern end of Maritime Southeast Asia and at the north of the Timor Sea. The Island of Timor is divided between East Timor in the east and Indonesia in the western part, which is also called West Timor.
