Q1. With reference to Piped Natural Gas (PNG) and Liquefied Petroleum Gas (LPG), consider the following statements:
- While LPG is primarily a mixture of Propane and Butane, PNG consists mainly of Methane.
- PNG is lighter than air, making it safer in case of leakages in well-ventilated areas compared to LPG.
- Both PNG and LPG require the same calorific value adjustments when switching household burner nozzles.
Which of the statements given above is/are correct?
A) 1 and 2 only
B) 2 and 3 only
C) 1 and 3 only
D) 1, 2, and 3
Q1. (A)
Explanation:
- Statement 1 is correct: LPG = Propane + Butane; PNG = Methane (CH₄).
- Statement 2 is correct: PNG is lighter than air and disperses upward, reducing risk; LPG is heavier and accumulates, increasing hazard.
- Statement 3 is incorrect: PNG and LPG have different combustion characteristics; burner nozzles require modification when switching.
Q2. Regarding the ‘Qdenga’ (TAK-003) vaccine, consider the following statements:
- It is a tetravalent vaccine developed using a DENV-2 backbone.
- Unlike Dengvaxia, it requires mandatory pre-vaccination screening.
- It is primarily disease-modifying, reducing severity rather than fully preventing infection.
How many of the statements given above are correct?
A) Only one
B) Only two
C) All three
D) None
Q2. (B)
Explanation:
- Statement 1 is correct: TAK-003 uses DENV-2 backbone targeting all four serotypes.
- Statement 2 is incorrect: Unlike Dengvaxia, no pre-screening is required.
- Statement 3 is correct: It mainly reduces hospitalisation and severe dengue, not infection entirely.
Q3. In the context of Census 2027, consider the following features:
- Hybrid model of digital self-enumeration with physical verification.
- Inclusion of digital access indicators in houselisting phase.
- Use of mobile-based apps for real-time data capture by enumerators.
- Permanent freezing of administrative boundaries for the entire decade.
How many of the above are correct?
A) Only one
B) Only two
C) Only three
D) All four
Q3. (C)
Explanation:
- Statements 1, 2, 3 are correct: Key features of Digital Census.
- Statement 4 is incorrect: Boundary freeze is temporary (during census period), not permanent.
Q4. Consider the following statements:
Statement-I: Samrat Samprati is referred to as the “Jain Ashoka” for his patronage of Jainism.
Statement-II: Like Ashoka, Samprati established a centralized department of “Jain-Dhamma Mahamatras” and sent missionaries abroad.
Which one of the following is correct?
A) Both correct, and II explains I
B) Both correct, but II does not explain I
C) I is correct, but II is incorrect
D) I is incorrect, but II is correct
Q4. (C)
Explanation:
- Statement I is correct: Samprati is called “Jain Ashoka” due to temple building and patronage.
- Statement II is incorrect: No evidence of centralized administrative system like Ashoka’s Dhamma Mahamatras or structured foreign missions.
Q5. Regarding Heatwave criteria by IMD, consider the following statements:
- A heatwave in plains is declared when maximum temperature ≥ 40°C.
- Heatwave can also be declared based on departure from normal temperature.
- Coastal areas have lower temperature thresholds for heatwave declaration.
How many of the statements given above are correct?
A) Only one
B) Only two
C) All three
D) None
Q5. (C)
Explanation:
- Statement 1 is correct: ≥40°C threshold for plains.
- Statement 2 is correct: IMD also uses departure from normal (+4.5°C, +6.4°C etc.).
- Statement 3 is correct: Coastal regions have lower thresholds (~37°C) due to humidity factors.
