UPSC Necessities | Day by day quiz by topic — Setting, geography, science and expertise (week 40) | UPSC Information

1. This may solely be achieved at very low temperatures.

2. Germanium was the primary materials found to own superconducting properties.

3. It refers to a state through which a cloth gives most resistance to electrical present.

How lots of the above statements are right?

(a) Just one

(b) Solely two

(c) The three

(d) None

QUESTION 2

Think about the next pairs:

How lots of the pairs given above match accurately?

(a) Just one

(b) Solely two

(c) The three

(d) None

QUESTION 3

Think about the next islands:

1. Agatti Island

2. Isle of Cinques

3. Kiltan Island

4. Rutland Island

5. Bitra Island

How lots of the islands given above are a part of Lakshadweep?

(a) Solely two

(b) Solely three

(c) Solely 4

(d) The 5

QUESTION 4

Think about the next statements:

1. Perihelion is the purpose the place the Earth is farthest from the Solar.

2. Aphelion is the purpose the place the Earth is closest to the Solar.

Which of the above statements are right?

(a) 1 solely

(b) 2 solely

(c) 1 and a pair of

(d) Neither 1 nor 2

QUESTION 5

Think about the next:

1. Analysis of coronal plasma and coronal loops

2. Carry out polarization and spectroscopic measurements of X-ray emissions

3. To measure the polarization of X-rays

How lots of the above are goals of XPoSat (Polarimetric X-ray Satellite tv for pc)?

(a) Just one

(b) Solely two

(c) The three

(d) None

ANSWERS TO MCQS

1.(a)

FOR YOUR INFORMATION:

— Superconductivity refers to a state in which a cloth presents zero or virtually zero resistance to electrical present. Subsequently, assertion 3 isn’t right.

— A present is nothing greater than the motion of charged particles, electrons typically, in a selected route. As electrons transfer, they collide and work together with different atoms within the materials.

— Resistance entails a lack of vitality, primarily within the type of warmth. A part of the rationale electrical home equipment get sizzling is that this resistance.

— Eliminating this resistance can result in ultra-efficient electrical units, elimination of transmission losses in electrical cables, and big vitality financial savings.

— Superconducting supplies exhibit very attention-grabbing habits below a magnetic discipline that permits the operation of programs such because the MRI imaging machine and the ultra-fast Maglev trains that float above railway tracks.

– Any further, superconductivity can solely be achieved at very low temperaturesgreater than 250 levels Celsius beneath zero, very near absolute zero which is – 273 levels Celsius. Subsequently, assertion 1 is right.

– The FThe primary materials found with superconducting properties was Mercury.which turns into superconducting at practically 270 levels Celsius beneath zero. Assertion 2 is subsequently not right.

— Most different supplies generally used as superconductors – lead, aluminum, tin, niobium and a number of other others – additionally grow to be superconductors at comparable temperatures, referred to as important temperatures.

Subsequently, choice (a) is the proper reply.

2.(a)

FOR YOUR INFORMATION:

Subsequently, choice (a) is the proper reply.

3.(b)

FOR YOUR INFORMATION:

– Prime Minister Narendra Modi’s latest journey to Lakshadweep catapulted the islands into the nationwide debate.

— The island is about 400 km off the coast of Kerala, within the Arabian Sea. The picturesque islands have lengthy been touted as a “hidden gem” for Indian vacationers.

— The vast majority of its inhabitants are Muslims, the Islam practiced in Lakshadweep is completely different from that practiced elsewhere in India, with the islanders sharing ethnic, linguistic and cultural ties with the Malyalis, Arabs, Tamils ​​and Kannadigas.

— The essential islands that are a part of Lakshadweep are Agatti, Amini, Andrott, Bitra, Kiltan, Kavaratti, Minicoyand so forth. Nonetheless, Cinque Island and Rutland Island are a part of the Andaman and Nicobar Islands.

Subsequently, choice (b) is the proper reply.

(Different supply: lakshadweep.gov.in)

4.(d)

FOR YOUR INFORMATION:

– THE phrase perihelion comes from the Greek phrases peri (that means close to) and helios (that means “solar”). Subsequently, assertion 1 isn’t right.

— The planets, comets and asteroids in our photo voltaic system all have elliptical orbits. Consequently, all of them have a perihelion and aphelion away from the Solar.

— Perihelion (first week of January) can be the day when the Solar seems largest within the sky, however a 3% distinction in measurement is nearly imperceptible to the human eye.

— Aphelion (first week of July) is the purpose the place the Earth is furthest from the Solar. Assertion 2 is subsequently not right.

Subsequently, choice (d) is the proper reply.

5.(b)

FOR YOUR INFORMATION:

— Indian Area Analysis Group (ISRO) launched its first polarimetry mission X-ray polarimeter satellite tv for pc (XPoSat) in a exact round orbit of 650 km.

— The X-ray Polarimetric Satellite tv for pc (XPoSat) is India’s first mission devoted to analyzing the polarization of X-rays emanating from brilliant celestial sources within the mid-frequency band.

— It consists of two main payloads, together with the Indian X-ray Polarimeter (POLIX) and X-ray Spectroscopy and Synchronization (XSPECT). They have been constructed by the Raman Analysis Institute and the UR Rao Satellite tv for pc Centre, each positioned in Bangalore.

— The goals of this mission are:

(i) The POLIX payload will use Thomson diffusion to judge the x-ray polarization within the 8-30keV vitality band emanating from about 50 potential cosmic sources.

(ii) The XSPECT payload will conduct long-term spectral and temporal research of cosmic X-ray sources within the vitality vary of 0.8 to fifteen keV.

(iii) POLIX and XSPECT payloads will execute polarization and spectroscopic measurements of X-ray emissions from cosmic sources within the widespread vitality vary.

Subsequently, choice (b) is the proper reply.

(Different supply: http://www.isro.gov.in)

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