Why do science and technology passages appear on the LNAT?

The LNAT tests whether you can follow a data-led or technical argument and evaluate the strength of its evidence, not whether you have scientific knowledge. Technology and energy topics are a natural source of this kind of reasoning because they combine hard data with genuine uncertainty about what that data implies.

Do I need a science background to answer these questions correctly?

No. The LNAT does not test specialist scientific or technical knowledge. Every question can be answered using only the information and figures given in the passage itself.

LNAT Science & Technology Practice Questions | Free Section A Drill

Why science & technology passages come up so often

The LNAT isn't testing your scientific knowledge — it's testing whether you can follow a passage built around data and technical detail, spot what a finding actually supports versus what it's being stretched to imply, and evaluate an expert's claim on its own terms. Science and technology topics suit this well because they combine hard figures with genuine open questions, which is exactly the structure LNAT questions probe. You do not need any specialist background to do well here; everything you need is in the passage.

Sample Passage

Science & Technology · Original practice passage · ~490 words

The Duration Problem

The UK's grid-scale battery storage capacity has expanded from roughly 1 gigawatt in 2020 to more than 4.5 gigawatts by the end of 2024, according to figures published by the National Grid Electricity System Operator. The growth reflects a straightforward problem: as wind and solar generation have grown to supply a larger share of Britain's electricity, the gap between when renewable power is generated and when it is needed has widened, and batteries are one of the few technologies that can close that gap on a timescale of minutes rather than months.

Lithium-ion batteries, the same chemistry used in electric vehicles, currently account for the overwhelming majority of installed grid storage. Their principal advantage is speed: a lithium-ion battery farm can begin discharging power into the grid within milliseconds of being called upon, making it well suited to smoothing short-term fluctuations in wind output. Their principal limitation is duration. Most grid-scale lithium-ion installations are designed to discharge fully within one to four hours, which addresses hourly volatility but does little to cover the multi-day lulls in wind generation that occur several times most winters.

This mismatch between the storage the grid has and the storage the grid needs has prompted growing interest in alternative technologies. Long-duration systems — including compressed air, liquid air, and flow batteries — can discharge over periods of eight hours or longer, but remain considerably more expensive per unit of stored energy and have been deployed at only a fraction of the scale of lithium-ion. A parallel development has been the rise of "second-life" battery storage, in which batteries retired from electric vehicles, having degraded below the threshold acceptable for automotive use, are repurposed for stationary grid storage, where slower charge-discharge cycles place less demand on ageing cells.

Dr. Amara Osei-Bonsu, an energy systems analyst at the Longhurst Energy Institute, has argued that the current reliance on a single battery chemistry represents a structural vulnerability rather than a temporary phase. "Lithium-ion is excellent at the job it was designed for, which is short-duration response," she noted in a 2024 briefing. "Treating it as the default answer to every storage problem the grid has is a mistake we're likely to regret. The multi-day wind lulls are not an edge case — they happen most winters — and lithium-ion economics get considerably worse the longer you ask a battery to hold its charge."

Whether long-duration alternatives can scale quickly enough to matter is, at present, an open question. Costs for several competing technologies are falling, but from a much smaller base than lithium-ion enjoyed a decade ago, and grid operators must commit to infrastructure now for a demand profile that will only fully materialise once renewable generation expands further still.

Questions

1Which of the following best captures the author's main conclusion?

Referendums should never be used to decide constitutional questions.
The 2016 referendum result was illegitimate.
Referendums appeal because they promise a clean resolution to questions that are inherently complex, a clarity the underlying question may not actually possess.
Parliament is a more efficient decision-making body than a public vote.

The closing paragraph states this almost directly: a referendum "promises a clarity that the underlying question rarely possesses." Option (c) captures that measured conclusion; (a), (b) and (d) all overstate or misstate claims the passage doesn't actually make.

2Which finding, if true, would most directly undermine Professor Vance's diagnosis of the problem?

Turnout in the 2016 referendum exceeded that of the previous three general elections.
Countries with codified referendum procedures and clear implementation thresholds report similarly prolonged post-referendum disputes.
A majority of MPs personally opposed holding the 2016 referendum.
Support for Leave and Remain was roughly evenly split across age groups.

Vance's specific claim is that codified rules — clear thresholds, settled procedures — would prevent the kind of prolonged contestation Britain experienced. If countries that already have such codified rules see similarly prolonged disputes, that directly undercuts her proposed fix. (a), (c) and (d) don't engage with that specific causal claim.

3Which of the following can be inferred as the author's own view?

Referendums should be abolished as a democratic tool.
The 2016 referendum was procedurally illegitimate.
Parliament's slowness reflects the genuine complexity of the problems it must resolve, rather than being a design flaw.
Most voters lacked sufficient understanding to vote on EU membership.

The final paragraph states this directly: "Representative democracy is slow and compromised because the problems it addresses are slow and compromised." (c) restates that inference accurately; the other options all go beyond what the passage supports.

4The author's overall tone toward referendums as a democratic instrument is best described as:

Uncritically supportive
Sceptical of how referendums are used, without denying the legitimacy of the underlying democratic impulse
Dismissive of the 2016 result specifically
Entirely neutral, offering no evaluation

The author takes seriously the proponents' case in paragraph two before raising a structural objection — this is critique of the instrument's use, not contempt for the impulse behind it, and certainly not a verdict on which side of the 2016 vote was "right." (b) captures that balance; (d) is wrong because the author clearly does evaluate, via the "compression" argument.

Tips for politics & government passages

Separate "what proponents argue" from "what the author thinks." Political passages often present a case fairly before critiquing it — don't mistake a reported argument for the author's own view.
Watch for scope creep in the conclusion. A passage that raises reasonable doubts about a policy is not the same as one that condemns it outright — LNAT wrong answers frequently overstate the author's actual position.
Underline the pivot word. Words like "yet," "however," and "none of this proves" mark exactly where the argument's structure turns — these are usually where the real answer lives.
Don't bring in outside political knowledge. Every answer is derivable from the text alone; real-world opinions about voting policy can actively mislead you here.

Frequently Asked Questions

Why do politics and government passages appear so often on the LNAT?

The LNAT tests reasoning about real-world argument, and policy debate is one of the richest sources of structured, evidence-based argument available. It also mirrors the kind of reasoning used in legal argument, which is why admissions tutors value it.

Do I need to know UK politics to answer these questions correctly?

No. The LNAT does not test your political knowledge or opinions. Every question can be answered using only the information and logic contained in the passage itself.

How is this different from a full LNAT practice test?

This page isolates one passage subject so you can drill a specific weak spot quickly. Lexcello's full practice tests combine 12 passages across all subjects, timed exactly as the real 95-minute LNAT Section A.

LNAT Science & Technology Practice