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Query for this week:Easy methods to take notes from The Indian Specific?
You possibly can ship your queries to manas.srivastava@indianexpress.com or be a part of Telegram: The Indian Specific UPSC Heart or ask me Reside! August 9 at 8 p.m.
QUESTION 1
India signed an settlement on the ‘MH-60R helicopter’ to strengthen the Indian Navy’s efforts to broaden its function within the Indian Ocean area with:
(a) Russia
b) Germany
(c) United States
d) France
QUESTION 2
On the subject of the Massive Hadron Collider (LHC), contemplate the next statements:
1. It’s a advanced machine designed to check particles that are the smallest identified constructing blocks of all issues.
2. She found the primary proof of the uncommon course of by which the Higgs boson decays right into a Z boson and a photon.
3. The LHC makes use of a liquid bromine supply system to maintain its crucial elements at an ultra-cold temperature of minus 271.3 levels Celsius.
How lots of the above statements are appropriate?
(a) Just one
(b) Solely two
(c) The three
(d) None
QUESTION 3
Contemplate the next statements:
Declaration-I:
Sound is utilized by sea creatures to journey, feed and shield themselves.
Declaration-II:
Though sound travels extra slowly in water than in air, it is a vital technique of communication as a result of it may transmit a considerable amount of data over nice distances.
Which of the next statements is appropriate concerning the above statements?
(a) Statements I and II are each appropriate and assertion II is the proper rationalization of assertion I.
(b) Statements I and II are each appropriate and assertion II shouldn’t be the proper rationalization of assertion I.
(c) Assertion I is appropriate however assertion II is inaccurate
(d) Assertion I is inaccurate however assertion II is appropriate
QUESTION 4
Concerning artificial diamonds, contemplate the next statements:
1. They’re produced utilizing particular expertise that mimics the geological processes of rising pure diamonds.
2. White sapphire is used as a diamond simulant to seem like a diamond.
3. The most typical methodology to supply artificial diamonds is through the use of the low stress, excessive temperature methodology.
How lots of the above statements are appropriate?
(a) Just one
(b) Solely two
(c) The three
(d) None
QUESTION 5
Concerning lithium-ion batteries, contemplate the next statements:
1. They use aqueous electrolyte options, the place ions transfer between the anode and cathode.
2. The power density of lithium-ion batteries is nearly 4 occasions that of nickel-cadmium batteries.
Which of the above statements are appropriate?
(a) 1 solely
(b) 2 solely
(c) 1 and a couple of
(d) Neither 1 nor 2
ANSWERS TO MCQS
1 C)
FOR YOUR INFORMATION:
— The 24 multi-roles MH-60 Romeo helicopters are anticipated to strengthen the Indian Navy’s efforts to broaden its function within the Indian Ocean area.
— The MH-60 Romeo Seahawk, manufactured by the protection big Lockheed Martin, is likely one of the most superior naval helicopters on this planet, utilized by the US Navy amongst others. It is going to be bought straight from the U.S. authorities underneath a International Army Gross sales (FMS) settlement with the U.S. Division of Protection (DoD).
– It is the Most succesful and mature anti-submarine warfare (ASW) Helicopter multi-mission anti-surface warfare (ASuW) out there globally immediately.
—The MH-60 is designed to trace submarines and can add to the strategic depth and fight functionality of the Indian Navy.
— It’s able to launching Hellfire missiles from the precise and left prolonged pylons.
— It additionally has a complicated system for passive detection, localization and identification of transmitters. It cannot solely monitor and hunt ships, however can be utilized by the US Navy as an anti-submarine weapon.
Due to this fact, possibility (c) is the proper reply.
2.(b)
FOR YOUR INFORMATION:
— The European Group for Nuclear Analysis (CERN), which hosts the Massive Hadron Collider (LHC), mentioned the group’s scientists had found the first proof of the uncommon course of by which the Higgs boson decays right into a Z boson and a photon. Assertion 2 is subsequently appropriate.
– THE Massive Hadron Collider is a huge, advanced machine designed to check particles that are the smallest identified constructing blocks of all issues. Due to this fact, assertion 1 is appropriate.
— It has a 27 km lengthy monitor loop buried 100 meters underground on the Franco-Swiss border. In its operational state, it fires two proton beams at practically the pace of sunshine in reverse instructions inside a hoop of superconducting electromagnets.
— The magnetic subject created by superconducting electromagnets holds the protons in a slim beam and guides them as they journey via the beam tubes and finally collide.
— The LHC makes use of a distribution system liquid helium to maintain its crucial elements at an ultra-cold temperature at minus 271.3 levels Celsius, which is colder than interstellar area. Due to this fact, assertion 3 shouldn’t be appropriate.
Due to this fact, possibility (b) is the proper reply.
3.(c)
FOR YOUR INFORMATION:
— A brand new research discovered that noise generated by human exercise makes communication tougher for dolphins and coordinate with one another.
— We all know that marine animals use sound to navigate, discover meals and shield themselves. Due to this fact, assertion 1 is appropriate.
– As sound travels sooner in water than in airit is a vital mode of communication as a result of it may transmit numerous data shortly and over lengthy distances. Assertion 2 is subsequently not appropriate.
—Scientists consider that fish species depend on sounds throughout their reproductive actions, together with attraction, courtship, and mate alternative.
Due to this fact, possibility (c) is the proper reply.
4.(b)
FOR YOUR INFORMATION:
— Lab diamonds are diamonds produced utilizing particular expertise that mimics the geological progress processes of pure diamonds. Due to this fact, assertion 1 is appropriate.
— They aren’t the identical as “diamond simulants” – LGDs are chemically, bodily and optically diamonds and subsequently troublesome to establish as lab-grown.
— Supplies corresponding to Moissanite, cubic zirconia (CZ), white sapphireYAG, and so on. are “diamond simulants” that merely try and “look” like a diamond; they lack the brilliance and sturdiness of a diamond and are subsequently simply identifiable. Assertion 2 is subsequently appropriate.
— There are a number of methods to supply LGD. The most typical (and most cost-effective) is the ““Excessive Stress, Excessive Temperature” (HPHT) methodology. Because the identify suggests, this methodology requires extraordinarily heavy presses that may produce as much as 730,000 psi of stress at extraordinarily excessive temperatures (at the very least 1,500 Celsius). Due to this fact, assertion 3 shouldn’t be appropriate.
– Usually, graphite is used as a “diamond seed” and when subjected to those excessive situations, the comparatively cheap type of carbon transforms into one of the vital costly types of carbon.
Due to this fact, possibility (b) is the proper reply.
5.(c)
FOR YOUR INFORMATION:
— The power density of lithium ion cells utilized in immediately’s cell phones and electrical automobiles is nearly 4 occasions increased than that of older era nickel-cadmium batteries. Assertion 2 is subsequently appropriate.
— Lithium-ion batteries use aqueous electrolyte options, the place ions transfer between the anode (destructive electrode normally product of graphite) and the cathode (constructive electrode product of lithium), triggering the charging and discharging of electrons. Due to this fact, assertion 1 is appropriate.
— Lithium-ion batteries are thought of environment friendly sufficient for telephones and laptops, however they nonetheless lack the vary that may make electrical automobiles a viable various to inside combustion engines.
— A serious downside is that lithium metallic is extraordinarily reactive. THE the primary type of lithium corrosion is dendritesthat are branched lithium buildings that develop from the electrode and may doubtlessly go via the separator and attain the opposite finish, shorting out the cell.
Due to this fact, possibility (c) is the proper reply.
