On average 12 to 15 questions per year., Highly rewarding

Refer a single source and have curiosity to know more about the topic.

Types of questions:

1. From your sources directly; Vision IAS
2. By common sense and periphery, knowledge;
3. all of the above are correct type questions (only in case where the application of the concept in question is vast and has scope in future);
4. Having no idea.

Sources: Vision IAS monthly, Ncert sci 6-12 (can refer notes)

Make mind maps

Extreme statement are wrong

Prepare these topics from regular source of current affair (vision IAS),

Make notes in small format or mind map mentioning the applicability and function.

Eg: Nanotech use in : Defence, Health, Agriculture, Electronics, Energy, Cosmetics, Communication etc.

like above for different topics.

Refer notes in files