A Lab

Read the idea, then practise it

Pick the chapters to practise

Questions are drawn fresh each time and mixed across multiple-choice, true/false, fill-in-the-blank, assertion–reason, matching, numericals and written answers.

Length

Style

Build a printable worksheet

Choose the chapters, press generate, then print. The answer key prints on its own page, so you can hand over the questions and keep the key.

Size

Full-syllabus mock paper

A 40-mark paper in the usual CBSE shape — Sections A to E, from very short answers up to a case study — covering all six chapters. Give it 90 minutes on the clock, then mark it against the key.

Each press builds a different paper from the same question bank.

What the Semester 1 exam covers

Six chapters from the NCERT Curiosity Class 8 textbook. Chapter 6 is limited to section 6.1 only — everything on winds, storms and cyclones is out of the exam.

A workable revision run for September

Two chapters a sitting. Read the chapter once, then run a 15-question practice on it here. Anything below 70% goes back for a second read.
Learn the named things. Most marks lost in Chapters 2 and 3 are names — Rhizobium, Lactobacillus, Anopheles, the vitamin deficiencies. Write them out; don't just re-read them.
Numericals daily. Chapters 5 and 6.1 are the ones with working. Five pressure sums a day for a week is enough to make them automatic. Always write the formula, then substitute, then the unit.
Print one worksheet a week and do it on paper, timed. Screen practice checks recall; paper practice checks whether he can actually write the answer out.
Two full mock papers in the last ten days, under 90 minutes, marked strictly.

Formulae and constants worth memorising

Pressure P = F / A · unit: pascal (Pa) = N/m²
Weight W = m × g · g = 10 m/s² (use 9.8 only if asked)
Area 1 cm² = 0.0001 m² · 1 m² = 10 000 cm²
Temperature K = °C + 273 · ice melts 0 °C = 273 K, water boils 100 °C = 373 K
Net force same direction: add · opposite directions: subtract