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Hit List Questions 49-PPP 100 PRELIMS 2024 - 67
Questions & Explanations:
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1. |
Which of the following is incorrect?. (a) Allethrin - Antibiotic (b) Rhodamine-B - Organic dye (c) Poly-hydroxy alkanoate – Bio Plastic (d) German Silver - Copper alloy
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2. |
1. The immune system mistakenly attacks myelin layer. 2. It is caused by the deficiency of carbohydrates and proteins in the body. 3. Plasma exchange therapy is used to treat the sever symptoms of multiple sclerosis. Which of the above statements is/are correct regarding multiple sclerosis? (a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3
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3. |
Gasohol is (a) Ethyl alcohol + Petrol (b) Natural gas + Ethyl alcohol (c) Methyl alcohol + Diesel (d) Methyl alcohol + Natural gas
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Heike Kamerlingh Onnes is widely known for (a) his works on superconductivity (b) his works on radioactivity (c) his works on co-ordination compounds (d) his works on metalloids
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5. |
Consider the following statements: I. During the process of osmosis, the solvent travels from the concentrated solution to the dilute solution. II. In the reverse osmosis, external pressure is applied to the dilute solution. Which of the statements is/are correct?. (a) Only I (b) Only II (c) Both I & II (d) Neither I nor II
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1. It is an interplanetary mission. 2. It would explore moons of Jupiter. 3. It was launched by European Space Agency (ESA). The above description pertains to the space mission named (a) Europa Clipper (b) Juno (c) Juice (d) Pioneer 11
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7. |
To make the steel hard requires increase in (a) The quantity of Carbon (b) The quantity of Manganese (c) The quantity of Nickel (d) The quantity of Chromium
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8. |
1. A bright blue LED is created with gallium nitride. 2. Red and green LEDs were created easily after the invention of blue LEDs. 3. LEDs cannot be ‘embedded’ in skin. 4. LEDs can be made of perovskites. Which of these are correct? (a) 1 and 4 (b) 1, 2 and 3 (c) 3 and 4 (d) 2, 3 and 4
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1. unsymmetrical dimethylhydrazine 2. nitrogen tetroxide 3. hydrogen Which of the above can be used as fuel for rocket motors.? (a) 2 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3
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10. |
With reference to alternating current, consider the following statements: 1. It can be modified more easily in transformers than direct currents. 2. It has higher transmission efficiency. Which of these statements is/are correct? (a) Only 1 (b) Only 2 (c) Both 1 and 2 (d) Neither 1 nor 2
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Which of the following is/are true w.r.t. Financial Stabilty report of India? 1. It is released by SEBI. 2. It is biannual. (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2
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12. |
The reason(s) why It is difficult to walk on the ice than on the road because is/are 1. Ice does not offer any reaction when we push it with our foot. 2. Ice has a lesser friction than the road. (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2
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13. |
If a gas is compressed to half of its original volume at 27ºC, to what temperature should it be heated to make it occupy its original, volume? (a) 327ºC (b) 600ºC (c) 54ºC (d) 300ºC
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14. |
I. Friction can arise if there are things to stick on both surfaces. II. Superconductivity is a way of getting rid of friction for electrons. Which of the above statements is/are true?. (a) Only I (b) Only II (c) Both I & II (d) Neither I nor II
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1. It is set up as per Article 351 in Indian Constitution. 2. It has 30 members- 20 MPs from Lok Sabha and 10 from Rajya Sabha. 3. It submits its report to the Parliament which is sent later it to President for approval. How many of the statements given above is/are correct w.r.t. The Committee of Parliament on Official Language?. (a) Only 1 statement (b) Only 2 statements (c) All the 3 statements (d) None of the statements
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16. |
Which of the following organization has released a comprehensive report titled ''Water for hydrogen production'', co-authored by Bluerisk? (a) WMO (b) IRENA (c) UNEP (d) IEA
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Magnetic confinement of plasma is connected with (a) Maglev trains (b) Negative super conductivity (c) Quantum computing (d) Combining two atomic nuclei
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18. |
The terms “PAPA, SWEEP & SWICAR” seen in news refer to the context of (a) Space Research (b) Biotechnological Research (c) Stock Exchanges (d) Glaciers
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19. |
Consider the following statements regarding the Financial Action Task Force (FATF): 1. FATF was established in 1989 during the G20 Summit in Paris. 2. India is a founding member of FATF. 3. FATF''s recommendations are legally binding. How many of the statements given above are correct? (a) Only one (b) Only two (c) All three (d) None
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20. |
Consider the following statements w.r.t. Pulsars. 1. They are rapidly rotating Neutron Stars. 2. They have weak magnetic fields. Which of the above statements is/are false?. (a) Only 1 (b) Only 2 (c) Both 1 and 2 (d) Neither 1 nor 2
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I. Only fermions can make up matter. II. The leptons and quarks together constitute the fermions. Which of the above statements is/are true?. (a) Only I (b) Only II (c) Both I & II (d) Neither I nor II
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22. |
Brass gets discoloured in air due to the presence of which gas in air ? (a) Stannous Chloride (b) Hydrogen Cyanide (c) Hydrogen Sulphide (d) Stannous oxide
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23. |
Two balls A and B are of 100 kg. and 10 kg. respectively. They are dropped simultaneously from a height of 20m. Which of the following is correct? (a) A will reach the ground first (b) B will reach the ground first (c) Both A and B will reach the ground at the same time (d) None of the above
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I. Gravity is the weakest of the four fundamental forces of nature. II.The force that bind the atoms together to form a solid is basically electromagnetic force. Which of the above statements is/are true?. (a) Only I (b) Only II (c) Both I & II (d) Neither I nor II
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25. |
An alkali metal that is often used in electric batteries as the cathode (in an oxide form). It is prized for this particular application because of its ions’ ability to move between the layers of graphite, which make up the anode. Which is the alkali metal referred here?. (a) Caesium (b) Lithium (c) Rubidium (d) Francium |
EXPLANATIONS
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1. |
Allethrin is a pyrethroid, a synthetic compound that duplicates the activity of the pyrethrin plant. It is available as mosquito coils, mats, oil formulations, and as an aerosol spray. Allethrin is a pyrethroid, a synthetic compound that duplicates the activity of the pyrethrin plant. It has stomach and respiratory action and paralyzes insects before killing them. · German silver is a copper alloy with nickel and zinc. It is also known as Nickel silver or Maillechort. The usual composition is 60% copper, 20% nickel and 20% zinc. · Notable bio-based and biodegradable plastics are polyhydroxyalkanoates (PHAs) and polylactic acid (PLA). Out of the PHAs, poly-3-hydroxyvalerate (PHV) and poly-4-hydroxybutyrate (PHB) are the most known. The hydrophilic nature of these polymers enables also hydro-degradation. |
A |
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2. |
As per the latest research, Epstein-Barr virus (EBV) can increase the risk of developing multiple sclerosis (MS). Multiple Sclerosis: · It is a chronic disease that affects the central nervous system, including the brain, spinal cord, and optic nerves. · In MS, the immune system attacks the protective sheath (myelin) that covers nerve fibers and causes communication problems between your brain and the rest of your body. · Eventually, the disease can cause permanent damage or deterioration of the nerve fibers. There are many possible causes of MS, including: · Autoimmune disorders; · Infectious agents, such as viruses; · Environmental factors; · Genetic factors; Signs and symptoms: · It vary widely between patients and depend on the location and severity of nerve fiber damage in the central nevous system. · Some people have mild symptoms, such as blurred vision and numbness, and tingling in the limbs. · In severe cases, a person may experience paralysis, vision loss, and mobility problems. There''s no cure for multiple sclerosis. However, there are treatments to help speed the recovery from attacks, modify the course of the disease and manage symptoms. Epstein-Barr virus (EBV) · It is one of the most common human viruses in the world. · It spreads through bodily fluids, especially saliva (spit). · Symptoms: Fatigue, fever, inflamed throat, swollen lymph nodes in the neck, enlarged spleen, swollen liver, rash. · EBV can cause infectious mononucleosis, also called mono, and other illnesses. · There is no vaccine to protect against EBV infection. |
D |
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Gasohol is a mixture of one part ethanol (commonly known as grain alcohol” or beverage alcohol) and nine parts unleaded gasoline. The alcohol which is blended in gasohol is not taken from petroleum, natural gas, or coal. The alcohol which is to be blended in gasoline has to be produced from renewable biomass. Hence, the ethanol which is used in gasohol is often obtained by fermenting crops or crop waste. Sometimes even methanol or wood alcohol is also used. |
A |
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4. |
https://www.thehindu.com/sci-tech/science/superconductivity-stay-in-the-flow/article67216178.ece |
A |
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5. |
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C |
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• Jupiter Icy Moons Explorer (Juice) mission is an interplanetary mission to explore different moons of Jupiter. • Europa Clipper is an orbiter mission by NASA to study Jupiter’s moon- Europa. • Juno is a NASA space probe orbiting the planet Jupiter. • Pioneer 11 is mission by NASA to study asteroid belt around the Jupiter.
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C |
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Steel is an alloy of iron and carbon, along with small amounts of other alloying elements or residual elements as well. The plain iron-carbon alloys contain 0.002 - 2.1% by weight carbon. The hardness of steel depends upon the amount of carbon. |
A |
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https://www.nobelprize.org/uploads/2018/06/popular-physicsprize2014-1.pdf |
a |
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D |
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10. |
https://www.thehindu.com/sci-tech/science/electric-power-transmission-explained/article67507272.ece |
C |
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In its Financial Stability Report (FSR) for June 2023, the Reserve Bank of India (RBI) projected a further decrease in the country''s gross non-performing assets (GNPA) for scheduled commercial banks. The GNPA, which reached a 10-year low of 3.9% in March 2023, is expected to decrease to 3.6% by March 2024. The report also highlighted the strengthening of banking and corporate sector balance sheets, with sustained growth in bank credit and low levels of non-performing assets. FSR assesses the overall stability and health of the country''s financial sector. NPAs refer to loans and advances that have stopped generating income for the lender, usually due to default or non-payment by the borrower. GNPAs are the sum of all the loans that have been defaulted by the individuals who have acquired loans from the financial institution.
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B |
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12. |
It is very difficult to walk on the ice than on the road because ice has a lesser friction than the road. The roughness of road’s surface gives you much frictional force which enables you to move forward on road. |
B |
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As we know that ''''V'' is directly proportional to ''T'' at constant P (Charle ''s Law) Let V1 (original volume) = V , V2 (volume after compression) = V / 2 ; T2 = 300 K (27° C) Therefore, T1 will be (V1T2) / V2 , = V × 300/(V/2) = 2 × 300 T1 = 600 K (327° C) |
A |
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C |
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It submits its report to the President, who then lays it before each House of Parliament, and send it to all the State Governments. • The Committee of Parliament on Official Language was set up in 1976 under Section 4 of The Official Languages Act, 1963. Section 4 states that there shall be a Committee on Official language, whose resolution shall be moved in either House of Parliament with the previous sanction of the President and passed by both Houses. • The Committee reviews the progress made in the use of Hindi for official purposes, and make recommendations to increase the use of Hindi in official communications. • The Official Languages Act, 1963 (OLA 1963) provides for 30 members- 20 MPs from Lok Sabha and 10 from Rajya Sabha. • Unlike the other Parliamentary panels, this Committee is constituted by the Home Ministry and it does not submit its report to Parliament. • Under the OLA 1963, the panel submits its report to the President, who then lays it before each House of Parliament, and send it to all the State Governments. |
A |
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B |
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D |
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A |
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• The FATF is the global money laundering and terrorist financing watchdog. • It was founded in 1989 on the initiative of the G7 to develop policies to combat money laundering and to maintain certain interests. Its mandate was expanded to include terrorism financing in 2001 • Members: 37 countries, European Commission and Gulf Cooperation Council. India became a member in the year 2010. • Objectives: To Set and promote standards, and implement measures against money laundering, terrorist financing, and related threats. |
A |
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They have strong magnetic fields. |
D |
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C |
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Hydrogen sulphide can corrode metals such as iron, steel, copper, and brass, tarnish silverware, discolour copper and brass utensils, cause yellow or black stains on fixtures and alter the appearance and taste of cooked foods. Properties of Hydrogen sulphide o Hydrogen sulphide is often generated from the microbial breakdown of organic matter in the absence of oxygen gas, such as in swamps and sewers. o This process is commonly called anaerobic digestion which is done by sulphate-reducing microorganisms. o H2S also generates in volcanic gases, natural gas, and in some sources of well water. o The human body generates small amounts of H2S and uses it as a signaling molecule. · Copper when exposed to air turns green in colour due to corrosion. When copper vessel is exposed to air in rainy season, the metal reacts with gases, moisture and atmospheric gases to form a mixture of copper carbonate and copper hydroxide. This gives a green colour to the surface of copper metal. |
C |
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In the absence of air resistance, all objects fall at the same rate regardless of their mass. This is one of the fundamental principles of free fall and was famously demonstrated by Galileo. Therefore, assuming that air resistance acting on the balls is the same, both ball A and ball B will reach the ground at the same time, assuming no other forces are acting on them. Both balls A and B will reach the ground at the same time. Because both balls are thrown from the equal height of 20metre. Thus, h = 20m Initial velocity u = 0 speed equation (for gravitational velocity) V2 = u2 + 2gh [ V→ final velocity] here, V2 = 2gh ( u = 0) or Since the height of both balls are equal (h = 20) and the formula of final velocity (V =) is not dependent on the mass of the balls. Thus, both the balls will reach the groundat the same time. |
C |
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Gravity is, by far, the weakest of the four fundamental forces of nature. By one measure, gravity is a thousand billion billion times weaker than the strong nuclear force, the strongest of all the forces. In an atom there are three fundamental forces that keep atoms together. electromagnetic force, strong nuclear force, and weak nuclear force. The electromagnetic force keeps the electrons attached to the atom. The strong nuclear force keeps the protons and neutrons together in the nucleus. |
C |
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B |
POSTED ON 02-06-2024 BY ADMIN
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