Winter solstice for Northern Hemisphere generally is on 22nd or 21st December every year.
Consider the statements regarding winter solstice in Northern Hemisphere.
1) The circle of illumination excludes the North Pole region from Sunlight.
2) From 66.5 degree South to 90 degree South, the Sun remains below the horizon the entire day.
3) Arctic Circle is the Southernmost parallel in the Northern Hemisphere that experiences a 24 hour period of darkness on this day.
Choose the correct statements from the codes below.

Atacama desert is one of the driest deserts of the world. Apart from other reasons there is a particular current which has made it a driest desert. Which is that current?

Plasma is one of the four fundamental states of matter. Consider the following statements.
1) It doesn’t have volume but has shape.
2) It is the most abundant form of matter.
3) Gas or air can be turned into plasma when artificially ionized.
Choose the correct statements from the codes below.

Sun spots are the one found on the outer surface of the Sun.
Consider the statements regarding Sun spots.
1) Sun spots region generally have lower temperature than the surrounding region on the Sun’s outer surface.
2) Sun spots do not have any effect on Earth’s climate.
3) Each period of weak Sun spot activity co-relates with the period of overall high solar radiation output from the Sun’s surface.
4) Sun spots generally have 11 year cycle.
Choose the correct statement/s from the following codes.

Developing countries like India has an adverse sex ratio of less than 1000 while in developed countries it is more than 1000. [Sex ratio: It is the number of females in a country for every 1000 males]
What is/are the possible reason/s with reference to India?
1) Social disadvantages that female face like female foeticide, female infanticide, domestic violence etc.
2) Stopping at one child ie couples restrain themselves from going for second child provided the first child born is male.
Choose the correct code from the following.

Consider the following statements which describe the properties of a particular metal
1. It as a valuable metal of which the major ore is Wolfram.
2. It is self hardening which it imparts to the steel when alloyed with the steel.
3. Steel when alloyed with this metal, is used in manufacturing of ammunitions, armour plates, heavy guns etc.
4. Its alloys are heat resistant, corrosion resistant and hardfacing.
Choose the correct metal from the options

Continental Drift theory by Wegener changed the perceptions about the Earth’s crust.
Consider the statements regarding this theory.
1) Sialic masses used to float over the Sima without any resistance being offered by Sima.
2) Earlier all land masses were united to form a massive landmass known as ‘Panthalasa’.
3) Ocean floors were considered to be stable and never moved.
Choose the correct statement/s from the following.

Consider the statements regarding different types of plates in ‘Plate Tectonic Theory’.
1) Destructive plate boundary is one in which continuous upwelling of molten material ie lava takes place.
2) Divergent plate boundary is one which two plates slide past one another thus neither creating nor destroying continental landmass.
3) Convergent plate boundary is one in which one plate overrides the other plate.
Choose the correct statement/s from the following code.

Consider the statements regarding earthquake (seismology).
1) Primary waves are analogous to sound waves and it can travel through liquid medium.
2) Secondary waves are analogous to water ripples and it cannot pass through liquid medium.
3) Surface waves are most destructive and slowest among the three waves (primary, secondary, surface waves).
Choose the incorrect statement/s from the following codes.

Consider the statements regarding volcanoes.
1) More than 95% of the global volcanoes are along the plate boundaries.
2) High intensity volcano types like Visuvius type, Peelean type etc are concentrated in the convergent plate boundaries.
3) Low intensity volcano like Mid Atlantic Ridge are concentrated in the divergent plate boundary regions.
Choose the correct statement/s from the following codes.