Purnima Lallan Sharma Foundation · Est. 2021
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Guides 97–120 of 159

Chemistry

Beginner

Matter, particles and changing states

A puddle shrinks, a cold bottle becomes wet, and a balloon keeps its shape.

Learning outcome: Explain solids, liquids, gases, diffusion and changes of state, then use a mass balance and a temperature record to test a particle explanation.

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Research & achievements

Intermediate

Microplastic hydrogels: capture, degradation and evidence

A material that removes particles from a test beaker raises several questions: where did they go, what changed chemically, and would the same result hold in river water? An IISc study published in 2024 provides a concrete way to investigate those questions.

Learning outcome: Calculate removal percentage and apparent removal per gram, design meaningful controls, and explain why a promising material still needs further testing before practical deployment.

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History, literature & society

Intermediate

Migration, urbanisation and social evidence

A growing city contains more than a story of people arriving from villages.

Learning outcome: Distinguish migration measures, calculate net movement and an urban share, explain multiple sources of urban growth, and identify what a survey can and cannot establish.

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History, literature & society

Intermediate

Narrative voice and unreliable narration

A story can tell us what happened while quietly revealing that its teller misunderstands what happened.

Learning outcome: Analyse who tells, who knows and who judges; identify different forms of speech representation; and defend a precise claim about unreliability.

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Philosophy & reasoning

Advanced

Nyāya: means of knowledge and testing inference

How can a reason carry us beyond what we immediately see? Classical Nyāya offers an exacting account of knowledge, inference and discussion.

Learning outcome: Identify the parts of an inference, reconstruct a five-member demonstration, and locate the precise point where an attractive argument fails.

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Earth, weather & environment

Intermediate

Oceans, tides and changing coasts

A coast is a meeting place of moving water, sediment and land.

Learning outcome: Explain these mechanisms, calculate tidal range using a common reference, and balance a coastal sediment account while recognising the limits of a short record.

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History, literature & society

Intermediate

Oral history: memory and ethical interviewing

A bus route, a workshop or a changing neighbourhood can have a history missing from formal reports.

Learning outcome: Design an ethical interview, distinguish different kinds of remembered claims, and edit a short extract without changing its meaning or permission conditions.

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Digital skills

Beginner

Passwords, passkeys and account safety

Protecting an account involves more than choosing a complicated word.

Learning outcome: Explain password reuse, distinguish a passkey from a device PIN, recognise unexpected sign-in prompts and make a recovery plan without writing real secrets into an exercise.

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Digital skills

Beginner

Personal data and digital footprints

A digital footprint includes what you post, what a service records and what others can infer by combining details.

Learning outcome: Identify direct and inferred personal information, explain cookies and private browsing, redesign an over-collecting form and review a file or photo before sharing.

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Philosophy & reasoning

Advanced

Philosophy of science: models, explanation and testing

A model can predict accurately without telling us every cause, and a failed prediction does not identify its own source of failure.

Learning outcome: Identify what a model represents, reconstruct the logic of a test, and explain when revising an assumption is informative rather than an excuse to avoid evidence.

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Career & workplace skills

Intermediate

Plan a small team project from goal to handover

A project brings people together to produce a defined result within constraints.

Learning outcome: Create a small project plan, calculate a simple dependency path and handle a proposed change without losing essential checks.

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Career & workplace skills

Intermediate

Prepare a job application and professional email

An application is a coordinated set of statements: the form, CV, letter and samples should tell the same truthful story.

Learning outcome: Assemble a consistent application, write a focused covering message and correct a submission mistake transparently.

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Mathematics

Intermediate

Quadratic equations and models

Products of changing lengths and models of accelerating motion lead to squared terms.

Learning outcome: Choose a solution method, explain the discriminant, find an extreme value, and reject a root only for a stated mathematical or contextual reason.

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Career & workplace skills

Beginner

Read a job description and assess your fit

A job description is a set of claims about work and selection, not merely a list of attractive words.

Learning outcome: Build a requirement-evidence table and decide whether to apply, clarify a condition or first address a genuine gap.

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