Quizzes

There are two types of body waves. They are called P and S-waves. P-waves move faster and are the first to arrive at the surface. These are also called ‘primary waves’. The P-waves are similar to sound waves. They travel through gaseous, liquid and solid materials. S-waves arrive at the surface with some time lag.

These are called secondary waves. An important fact about S-waves is that they can travel only through solid materials. This characteristic of the S-waves is quite important. P-waves vibrate parallel to the direction of the wave. The direction of vibrations of S-waves is perpendicular to the wave direction in the vertical plane.

Hence, they create troughs and crests in the material through which they pass.

Statement (a) is incorrect because during summers water accumulates high amount of energy which it is unable to loose quickly by winters. Hence during winters land becomes extremely cold whereas water still remains warm leading to high thermal contrast. Statement (b) is factual.

The high temperature and moisture of tropical rainforests cause dead organic matter in the soil to decompose more quickly than in other climates, thus releasing and losing its nutrients rapidly. The high volume of rain in tropical rainforests washes nutrients out (leaching) of the soil more quickly than in other climates.

Statement (a) is incorrect because the insolation received at the surface varies from about 320 Watt/m2 in the tropics to about 70 Watt/m2 in the poles. Equator receives comparatively less insolation than the tropics.

Statement (b) is factually incorrect.

Statement (c) is correct because some atmospheric gases, such as water vapour absorb and re-emit infrared energy from the atmosphere down to the Earth’s surface.Statement (d) is incorrect because infra-red waves is outside the visible spectrum.

TLH from Moreh – Tamu – Kalewa – Monywa – Mandalay – Nay Pyi Taw – Bago – Myawaddy –Mae Sot.

BCIM corridor connects Kolkata and Kunming not Varanasi.

East West corridor connect Porbandar and Silcher.

Amarkantak is in Maikala range. Anaimalai hills and cardamom hills are the southernmost point of western ghats.

Seshachalam hills are part of Eastern Ghats.

The Congo Basin spans across countries—Cameroon, Central African Republic, Democratic Republic of the Congo, Republic of the Congo, Equatorial Guinea and Gabon.

Indonesia has emerged as the world’s second-largest supplier of cobalt, contributing to a sharp fall in the price of the battery metal and adding to western anxieties about Beijing’s dominance across the electric car supply chain.

The south-east Asian country generated 9,500 tonnes of cobalt last year — 5 per cent of the global supply — up from minimal volumes before 2021.

Despite its rapid growth, Indonesia remains a long way behind the world’s number one supplier, the Democratic Republic of Congo, which holds a 73 per cent global share.

India is endowed with large resources of heavy minerals which occur mainly along coastal stretches of the country and also in inland placers.

Heavy mineral sands comprise a group of seven minerals, viz, ilmenite, leucoxene (brown ilmenite), rutile, zircon, sillimanite, garnet and monazite. Ilmenite (FeO.TiO2 ) and rutile (TiO2 ) are the two chief minerals of titanium. Titanium dioxide occurs in polymorphic forms as rutile, anatase (octahedrite) and brookite

The Rann was a once a shallow part of the Arabian Sea, until a geological shift closed off the connection with the sea. The region became a seasonal marshy salt desert over the years. During monsoons the region fills up with water and forms a wetland. In the summer the water dries to create a bed of white salty land. The Great Rann is a bowl-shaped depression, its eastern edge merging into the drainage area of the Luni River.

Statement 1: India’s arable land area is 156 million hectares while China’s arable land area is 119 million hectares.

Statement 2: According to the above articles, India’s proportion of irrigated area is 48% while China’s proportion of irrigated area is 41%.

Statement 3: Agricultural productivity in China is almost 50 to 100% more than that of India.

Jackfruit is evergreen tree hence incorrect. Mahua and Teak are deciduous trees.

Mundra Port is India’s biggest commercial port by volumes, has gained another distinction in container handling by overtaking State-run Jawaharlal Nehru Port Trust (JNPT) to become the leader by handling 5.65 million twenty-foot equivalent units (TEUs) in FY21, posting a growth of 18 per cent over the previous year.

Kolleru lake is fed directly by water from the seasonal Budameru and Tammileru streams and lies between Krishna and Godavari rivers.

hence statement 2 is incorrect.

Statement 1 and 3 are factually correct.