1st March,2023 MCQs
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Q1. Consider the following statements:
1. Sounding rockets are two stage solid or liquid propellant rockets only.
2. Small Satellite Launcher (SSLV) uses two solid fuel-based stages and a liquid fuel-based velocity trimming module (VTM)
Which of the following statements is/are correct?
A. 1 Only
B. 2 Only
C. 1 and 2 Both
D. Neither 1 nor 2
View Answer
Answer: D
Statement 1 is incorrect: Sounding rockets are one or two stage solid propellant rockets used for probing the upper atmospheric regions and for space research.
Statement 2 is incorrect: Small Satellite Launcher (SSLV) uses three solid fuel-based stages not two solid fuel bases and a liquid fuel-based velocity trimming module (VTM).
Q2. The New START Treaty was in the news. What is the treaty?
A. It is a bilateral strategic nuclear arms reduction treaty between the USA and the Russian Federation.
B. It is a multilateral energy security cooperation treaty among the members of the East Asia Summit.
C. It is treaty between the Russian Federation and the European Union for the energy security cooperation.
D. It is a multilateral cooperation treaty among the BRICS countries for the promotion of trade.
View Answer
Answer: A
It is a bilateral strategic nuclear arms reduction treaty between the USA and the Russian Federation.
Russian President recently announced that Moscow was unilaterally suspending the last remaining nuclear arms control treaty with the U.S., stating that the West was trying to destroy Russia.
Q3. Consider the following statements regarding Lactose Intolerance:
1. It is the inability of a person to digest lactose.
2. It is caused by a deficiency of the intestinal enzyme lactase.
3. Beyond the age of five, lactose in milk, cannot be naturally broken down in the stomach. Which of the above statement/s is/are correct?
A. 2 and 3 only
B. 1 and 3 only
C. 3 only
D. 1,2 and 3
View Answer
Answer: D
Statement 1 is correct: Milk has been a part of the human diet for thousands of years. But a lot of people end up feeling uneasy, bloated or excessively gassy after consuming milk. If one experiences such symptoms, they are most likely to be lactose intolerant. It is simply the body’s inability to absorb milk lactose or a milk allergy.
Lactose intolerance is the inability of a person to digest lactose, the principal sugar in milk, that gives rise to gastrointestinal symptoms.
Statement 2 is correct: Lactose intolerance is caused by a deficiency of the intestinal enzyme lactase that acts on lactose to convert it into glucose and galactose which are then absorbed from the intestine. Primary symptoms of lactose intolerance are diarrhoea, flatulence (passing gas), and abdominal pain. Abdominal bloating, abdominal distension and nausea may also occur. Lactose intolerance is treated with dietary changes,
Statement 3 is correct: Studies on the global prevalence of this mutation suggest that 65% of humanity is lactose-intolerant, meaning they lack the gene to break down lactose into adulthood. Beyond the age of five, lactose, a sugar present in milk, cannot be naturally broken down in the stomach and this remains in the gut causing flatulence, acidity, and diarrhoea
Q4. Presence of which of the following in e-waste makes it hazardous for environment?
A. Lead
B. Glass
C. Graphene
D. Bisphenol A
View Answer
Answer: A
The presence of elements like lead, mercury, arsenic, cadmium, hexavalent chromium, and flame retardants beyond the threshold quantities make e-waste hazardous in nature.
Q5. Consider the following statements:
1. Alpha radiation occurs when the nuclides of high atomic mass have a higher neutron to proton ratio than stable nuclide.
2. Alpha radiation is negatively charged, and gamma radiation is neutral.
Which of the statement/s given above is / are correct?
A. 1 only
B. 2 only
C. Both 1 and 2
D. Neither 1 nor 2
View Answer
Answer: D
Statement 1 is incorrect: Alpha Radiation: The emission of a He nucleus. Alpha radiation is common when the nuclides of high atomic mass have a lower neutron to proton ratio than stable nuclide and ejects an alpha particle.
Statement 2 is incorrect: Alpha particle is positively charged and gamma particle is neutral.
Beta particles have a mass which is half of one thousandth of the mass of a proton and carry either a single negative (electron) or positive (positron) charge.
Q6. Sanchi Stupa is depicted on which of the following Indian currency note?
A. 100 rupees
B. 200 rupees
C. 500 rupees
D. 2000 rupees
View Answer
Answer: B
Sanchi Stupa is depicted on the reverse side of the Indian currency note of 200 rupees to signify its importance to Indian cultural heritage.
Q7. R0(read as R-Naught) sometimes seen in news is about which of the following?
A. Ransomware
B. Contagiousness of a pathogen
C. Recycle Reuse & Reduce plastics
D. Cryptocurrency
View Answer
Answer: B
Reproduction Number (Ro) (pronounced R naught) is used to describe the intensity of an infectious disease outbreak.
» Ro is the number of cases, on average, an infected person will cause during their infectious period. The larger this number, more contagious is the disease.
» It can be viewed as the product of three numbers (i) the number of days an infected person remains infective (i.e., can infect others), (ii) the number of susceptible persons available to infect and (iii) the chance that a susceptible person gets infected
Q8. Which of the following Ministry authorizes for change in the ‘Railway station’s name ‘in India?
A. Ministry of Home Affairs
B. Ministry of Railways
C. Prime Minister Office (PMO)
D. None of the above
View Answer
Answer: A
State governments submit requests for renaming town, cities, villages, and railway stations to the Ministry of Home Affairs, which evaluates the proposals in cooperation with other agencies and gives a ‘no objection’ if the idea is granted.
Q9. Consider the following statements about Human Immunodeficiency Virus (HIV):
1. HIV causes varieties of infections and some types of cancer in an individual
2. HIV has RNA genome and can thus mutate easily.
Which of the statements given above is/are correct?
A. 1 only
B. 2 only
C. Both 1 and 2
D. None of the above
View Answer
Answer: B
Statement 1 is incorrect: HIV does not cause infections or cancers per se but it attacks the immunity and immune response of the body which cannot further fight off various pathogens and so several diseases occurs to the patient.The most advanced for of HIV infection is Acquired Immunodeficiency Syndrome (AIDS), which can take from 2 to 15 years to develop depending on individual.
Statement 2 is correct: Being a RNA virus HIV mutates easily. HIV has already been recorded as one of the most rapidly mutating viruses. According to a report in Nature, the virus genes vary from one person to another who has tested positive for it. At times, it differs within one individual.
Q10. Recently, ‘Khand Olite Mining’ is associated with which of the following tribes?
A. Naga Tribe
B. Bhil Tribe
C. Khond Tribe
D. Kodas Tribe
View Answer
Answer: C
Khondalite is a foliated metamorphic rock. In India, it is also called Bezwada Gnesis and Kailasa Gnesis. It was named after the Khond Tribe of Odisha and Andhra Pradesh.