Dear Students,

Welcome to Std. X – Science and Technology Part – II

Planning the study

The main purpose of new syllabus textbook of Science and Technology Part – II, there are many activities charts, tables, flowcharts, reactions, and so many figures / diagrams are given. Use all of them and discuss with friends and enjoy your study.

To score better percentage follow these steps.

1. From textbook use sections like ‘can you recall?’ and ‘can you tell?’ for revision.

2. Think about the titles like ‘observe and discuss’ and ‘try this’ or let’s try this.

3. Make sure that you perform all these activities like,
“Use your brain power”
“Think about it”
By doing this your thinking power will definitely improve.

4. Use modern technology like Computer, website, Omtexclasses youtube channel, Omtexclasses android app, smart phone which you are already familiar with. Use these devices to enhance your studies.

5. It is expected that while carrying out activities or observations involving plants and animals, you will also make efforts towards conservation of the environment.

Our best wishes for your study.

For self-study, it can be done stepwise as.

1. Take a brief look through lesson: Take a brief look on all the points, sub – points, diagrams, pictures, questions in exercises to get familiar with lesson.

2. Reading: Read the textbook with proper understanding. While reading, mark or underline the important points, rules, formulae, etc.

3. Recalling: Recall all the underlined points being calm and read again if not remembering.

4. Review: Review all marked and underlined points weekly or regularly to remember the lesson.

5. Evaluating: Test yourself by preparing a test on the lesson and get it checked by teachers.

Take a 15 minutes break after each one hour. 


1. Fill in the blanks.

1. The centre of mass of any object having uniform density is at its centroid.

2. The family of metals having valency one is called alkali metals.

3. 1 nanometer = 10-9 m

4. Corrosion of copper is called as patination.

5. According to Fleming’s left hand rule, the thumb indicates ­the force on the conductor.

ODD man out.

1. Boron, Phosphorous, Flourine, Beerylium.

Ans. Phosphorous (belongs to 3rd period)

2. Fan, Refrigerator, Doorbell, Mixer.

Ans. Doorbell (does not use motor)

3. Tinning, Roasting, Alloying, Galvanization.

Ans. Roasting (It is not a method to prevent corrosion)

4. Corrosion, Rusting, Reduction, Rancidity.

Ans. Reduction (It is not an oxidation reaction)

5. Camera, Torch, Telescope, Spectacle.

Ans. Spectacle (It may use concave lens also)