Consider the following statements : 1. Ballistic missiles are jet-propelled at subsonic speeds throughout their flights, while cruise missiles are rocket-powered only in the initial phase of flight. 2. Agni-V is a medium-range supersonic cruise missile, while BrahMos is a solid-fuelled intercontinental ballistic missile. Which of the statements given above is/are correct?

Explains that 'jet streams' are atmospheric wind currents used by aviators, showing one common meaning of the word 'jet' refers to air flows rather than engines.

A student could contrast the meaning of 'jet' as a natural wind with descriptions of missile propulsion to see whether 'jet' in 'ballistic missile' would likely mean an engine or something else.

Mentions 'jet aircraft' flying in the lower stratosphere, implying a class of aircraft (jets) operate in particular atmospheric layers — connecting the term 'jet' to aircraft propulsion/use.

A student could recall that jet aircraft have air-breathing engines and then compare that to whether ballistic missiles operate within those layers or require air-breathing propulsion.

Defines jet stream as high‑altitude, fast westerly winds (9000–12000 m) and notes their effect on aviation, reinforcing that 'jet' commonly denotes high‑speed atmospheric wind phenomena.

Using a map or altitude ranges, a student could check typical ballistic missile flight profiles (exo/endo-atmospheric) to assess whether they would rely on atmospheric jet winds or independent propulsion.

States jet streams form due to pressure differences and Coriolis force — another pattern showing 'jet' as a meteorological phenomenon driven by atmospheric dynamics, not engines.

A student could use this to reason that missiles relying on internal propulsion wouldn't be described as 'jet‑propelled' simply because they traverse regions with jet streams.

Describes where and how jet streams occur in the upper troposphere, providing concrete altitude/flow information that distinguishes environmental wind from powered propulsion.

A student could combine these altitude facts with known ballistic missile trajectories (which may leave the atmosphere) to judge whether air‑breathing jet engines would be practical or likely.

Mentions supersonic aircraft as a category distinct from ordinary commercial flights, showing that some aerial vehicles deliberately travel faster than the speed of sound.

A student could note that since aircraft can be deliberately supersonic, comparing typical missile mission profiles to known supersonic capabilities could test whether missiles are likely to exceed sonic speeds during parts of flight.

Gives concrete high-altitude wind speeds (jet streams 300–400 kmph, sometimes up to ~400 kmph), illustrating common high-atmosphere velocities that are well below sonic speed.

A student can compare these atmospheric speeds to the speed of sound (basic external fact) to see that many natural and aircraft-related flows are subsonic, so if a missile's reported speeds are similar or much higher one can infer whether parts of flight are subsonic or supersonic.

Provides average and core jet stream velocities (50–120 kmph average, cores up to 400+ kmph), reinforcing the range of subsonic high-altitude speeds encountered by objects in the upper troposphere.

A student could use these numerical ranges as benchmarks for 'typical subsonic high-altitude speeds' and compare them to reported missile velocities to judge if missiles exceed them (and thus likely become supersonic).

Gives an example of another natural fast-traveling phenomenon (tsunami) with speeds up to 850 kmph in deep water, showing that some objects can approach high hundreds of km/h without being supersonic.

A student could take this 850 kmph figure and compare it to the speed of sound to see that even very fast natural phenomena may still be subsonic, and thus use such comparisons when evaluating missile speed claims.

Lists extreme localized wind speeds (microbursts up to ~270 kmph), giving further examples of high but subsonic velocities relevant to aircraft/missile environments.

A student could contrast these hazard speeds with both typical aircraft and missile speeds to reason whether missiles are necessarily subsonic throughout flight or likely exceed such atmospheric speed ranges at some phases.

Describes sounding rockets and two-stage solid propellant rockets used for space research, showing rockets can use multiple stages and provide sustained propulsion beyond an initial moment.

A student could note that multi‑stage rockets are designed for prolonged propulsion (not just a brief launch impulse) and compare that design purpose to missile propulsion types to judge whether rocket use can be limited to launch only.

Explains development of the Rohini family of sounding rockets and growing size/complexity, implying rockets are engineered to carry payloads over long flight profiles.

Use the idea that rockets carry payloads over a full ascent to contrast with missile designs that might use rockets only briefly versus continuously.

Notes many artificial satellites are sent up by rockets and that rocket parts remain in orbit as debris, implying rockets perform the bulk of ascent rather than only an instant of launch.

From the pattern that rockets place payloads into orbit (a prolonged flight outcome), a student could infer rockets are capable of powering an extended phase, then check whether cruise missiles use such sustained rocket propulsion or other engines.

States rockets were used in historical military campaigns, giving an example of rockets functioning as weapons rather than only as launchers for payloads.

A student could use this historical precedent to consider that military rockets can be designed to power weapon flight for longer durations, and then investigate how modern cruise missiles compare.

Mentions establishment of rocket launching facilities and growth in defence production capacity, indicating rockets have both civilian (space) and military applications.

A student might extend this to check distinctions between space‑launch rockets (sustained ascent) and military missile propulsion to assess whether rockets are necessarily limited to initial launch.

Mentions India's membership of the Missile Technology Control Regime (MTCR), a regime that organizes thinking and controls about missile technologies and their ranges.

A student can recall the MTCR's range-related threshold from general knowledge and then check whether Agni‑V's publicly reported range falls above or below that threshold to judge classification.

States India's aim to build a 'credible minimum deterrent' and describes nuclear retaliation posture, implying India develops delivery systems (ballistic missiles) of varying ranges for deterrence.

Use this to infer that India fields both short/medium and longer-range missiles; then compare Agni‑V's intended role (strategic deterrent) and range against typical 'medium‑range' categories.

Notes induction of specific indigenous missiles (Prithvi 1), showing India maintains multiple missile types with different roles and ranges.

A student can use this pattern (multiple missile classes exist) to reason that Agni family missiles may span different range classes and should be checked against standard range definitions.

Describes A.P.J. Abdul Kalam as 'Missile Man' for his role in India's missile programme, indicating an organized program that produced missiles of diverse capabilities.

From this, a student can infer the existence of strategic/long‑range development within India's programme and thus seek authoritative range figures for Agni‑V to test the 'medium‑range' label.

Mentions India joining the Missile Technology Control Regime (MTCR), a regime concerned with export/control of delivery systems for missiles.

A student could use the MTCR's focus (range/payload of delivery systems) and basic definitions of cruise vs ballistic missiles to check which category a strategic weapon like Agni‑V would fall into.

States India inducted the Prithvi missile and prioritised modernisation of the defence/missile sector.

Use this pattern (India develops and inducts indigenous missiles) plus standard missile classification (Prithvi is commonly described as ballistic) to compare Agni‑V's likely role and type.

Profiles A.P.J. Abdul Kalam as the 'Missile Man of India' linked to development of India's missile programme.

Combine this with basic outside knowledge that India's strategic missile programme produced various long‑range delivery systems, and then check whether Agni‑V fits the cruise‑missile profile or a different class.

Notes the arms race included acquiring missiles to deliver nuclear weapons in the 1990s.

Knowing that nuclear delivery systems are often long‑range ballistic missiles, a student can use this pattern to question whether Agni‑V (a strategic delivery system) is more likely ballistic than a supersonic cruise missile.

Describes air strikes using fighter jets and missiles—illustrates different launch platforms and missile roles (air‑launched tactical missiles vs strategic ones).

A student can use the distinction between air‑launched cruise/short‑range missiles and land‑based strategic missiles to infer which category Agni‑V might belong to and then check external class/technical data.

Explicitly states that sounding rockets used at Thumba were 'two-stage solid propellant rockets', showing India has experience building solid‑propellant rockets.

A student could use this to note that Indian aerospace industry has solid‑propellant expertise and then check whether BrahMos (a later Indian missile) uses technologies from solid‑propellant programs or from other (e.g., liquid/air‑breathing) propulsion classes.

Gives a historical pattern that India developed indigenous rocketry and weapons systems from both space and military research, implying multiple propulsion types have been used over time.

One could infer India’s missile inventory includes diverse propulsion types and so look up the specific class and origin of BrahMos to see if it follows the solid‑propellant pattern or a different one.

Mentions induction of the Prithvi missile and modernisation of the defence sector, indicating India fields named missile systems—useful as examples when comparing propulsion classes across Indian missiles.

A student can compare known propulsion types of listed Indian missiles (e.g., Prithvi) with BrahMos to determine whether BrahMos aligns with solid‑fuel examples or contrasts with them.

Notes A.P.J. Abdul Kalam’s central role in India’s missile programme, pointing to continuity of indigenous missile R&D where different propulsion technologies were developed.

Use this to motivate checking primary sources or technical briefs from Indian missile developers (program leaders or agencies associated with Kalam) about BrahMos propulsion.

Mentions India joining the Missile Technology Control Regime, signalling international engagement on missile technologies and transfers—relevant because BrahMos is an Indo‑Russian collaboration and propulsion type may reflect that partnership.

A student could follow this clue to examine the Indo‑Russian collaboration history (e.g., which Russian technologies were shared) to infer whether BrahMos uses solid propellant tech commonly transferred under such agreements.

Mentions India joined the Missile Technology Control Regime (MTCR), a regime concerned with missiles and their proliferation.

A student could look up MTCR's criteria (e.g., thresholds for range/payload) and compare those thresholds with publicly known BrahMos performance to judge if it meets ‘‘ICBM’’ range criteria.

States that India and Pakistan acquired missiles as delivery systems for nuclear weapons, linking missiles to delivery-role categories (short-, medium-, long-range).

A student could use this to recall that ‘‘ICBM’’ is a class defined by very long range for strategic delivery and then check BrahMos's stated role and range to see if it fits that class.

Notes induction of the Prithvi 1 missile, an example of an Indian missile system, implying India fields missiles of varying ranges and types.

A student could compare known Indian missile examples (e.g., Prithvi as short-range) with BrahMos to place BrahMos in the short/medium/long-range taxonomy rather than as an ICBM.

Discusses 'ballistic missiles' in the context of arms-control treaties, highlighting that missile categories (ballistic vs others) matter for treaties and classification.

A student could use the ballistic vs non-ballistic distinction to ask whether BrahMos is ballistic (ICBMs are ballistic) or of another type (e.g., cruise), then check BrahMos's flight profile.

Describes India's space-launch activities (sounding rockets, launch vehicles), which are related technologically to long-range ballistic systems.

A student could note that ICBMs are ballistic, rocket-propelled, long-range systems akin to SLVs and then verify if BrahMos uses a cruise-missile flight profile rather than a ballistic/SLV-type trajectory.