Why this book? To provide a very effective final revision material for Term 1 Board Exams, we have collaborated with top CBSE teachers and experts. 1. Time Management: Gives structure of how to solve each paper

under 90 minutes.

2. NCERT Revision: Lacking confidence in these last few days?

Use our special objective theory of each Chapter to pick up all



important MCQ points of Term 1 Syllabus.

3. Questions Practice: All most likely to be asked important

MCQs of new typologies (including competency based MCQs)



on each topic are given, for chapter-wise final practice, in a



short span.

4. Self Assessment: Ultimate FINAL check before the Term 1

Exam to know where you stand with all the learnt topics. Also



self-evaluation charts will help identify weak topics.

If you want to practice more sample papers, you can also purchase our Term 1 Sample Paper Books at a highly attractive discount.

Scan the QR Code

Contents CBSE Date Sheet

4

Time Management (1.5 hour paper) – All Subjects

5

OMR Sheet Instructions

10

SCIENCE Chapterwise Objective Section Maps

13

Most Likely Case-Based Questions

26

Final Sample Paper (Self-Assessment)

49

(with OMR + Self Evaluation Chart)

MATHEMATICS (STANDARD / BASIC) Chapterwise Objective Section Maps Most Likely Case-Based Questions Final Sample Paper (Self-Assessment)

61 77 102

(with OMR + Self Evaluation Chart)

SOCIAL SCIENCE Chapterwise Objective Section Maps

109

Most Likely Source-Based Questions

124

Final Sample Paper (Self-Assessment)

140

(with OMR + Self Evaluation Chart)

ENGLISH LANGUAGE & LITERATURE Complete Paper Focus Points

149

Most Likely Inference-Based Questions

161

Final Sample Paper (Self-Assessment)

191

(with OMR + Self Evaluation Chart)

HINDI A Complete Paper Focus Points

201

Most Likely Inference-Based Questions

207

Final Sample Paper (Self-Assessment)

222

(with OMR + Self Evaluation Chart)

HINDI B Complete Paper Focus Points

231

Most Likely Inference-Based Questions

235

Final Sample Paper (Self-Assessment)

248

(with OMR + Self Evaluation Chart)

CBSE PRACTICE OMR SHEETS X 12

257

CENTRAL BOARD OF SECONDARY EDUCATION SECONDARY SCHOOL EXAMINATION–2021 (CLASS-X)

REVISED DATE SHEET AS PER 18/10/2021

DAY, DATE AND TIME

SUBJECT CODE

SUBJECT NAME

122

SANSKRIT

087

SOCIAL SCIENCE

086

SCIENCE

064

HOME SCIENCE

041

MATHEMATICS STANDARD

241

MATHEMATICS BASIC

165

COMPUTER APPLICATIONS

002

HINDI COURSE-A

085

HINDI COURSE-B

184

ENGLISH (LANG & LIT.)

MONDAY, NOVEMBER 22nd, 2021 11:30 AM - 1:00 PM TUESDAY, NOVEMBER 30th, 2021 11:30 AM - 1:00 PM THURSDAY, DECEMBER 2nd, 2021 11:30 AM - 1:00 PM FRIDAY, DECEMBER 3rd, 2021 11:30 AM - 1:00 PM SATURDAY, DECEMBER 4th, 2021

11:30 AM - 1:00 PM

WEDNESDAY, DECEMBER 8th, 2021 11:30 AM - 1:00 PM THURSDAY, DECEMBER 9th, 2021

11:30 AM - 1:00 PM

FRIDAY, DECEMBER 11th, 2021 11:30 AM - 1:00 PM

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Time Management We always look for new ways to help you improve your paper-solving skills. So, with the help of Subject Matter Experts and CBSE examiners, we have estimated a fair breakdown of time to be divided during the CBSE Class 10 Term 1 Exams.

Science Section

No. of Questions

MCQ Type

Time to be Spent per MCQ

Reading Time (Mandatory) Stand Alone MCQ

13 MCQ

1 min per MCQ

Mixed Type MCQ

11 MCQ

1.5 min per MCQ

Stand Alone MCQ

13 MCQ

1.5 min per MCQ

A

B

C

Mixed Type + A-R + Competency/ Case-based MCQ Competency/ Case-based MCQ

Total Time to be spent 20 min

25 min (max) (for 20 MCQs)

35 min (max) 11 MCQ

2Q (4 MCQ each)

2 min per MCQ

2 min per MCQ

(for 20 MCQs)

20 min (max) (for 10 MCQs)

Revision Time (optional)

10 min

TOTAL TIME:

90 min

How to Solve MCQs in Science? • Many MCQs will be testing your understanding of the topic and options can be tricky to pick from. So try to rely on your knowledge to affirmatively pick the right option. Elimination method isn’t effective here. • For Assertion-reasoning-type MCQs, put each statement in an individual perspective and figure out if they can be true or false. This will take you 1-2 minutes max.

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Mathematics Standard / Basic Section

MCQ Type

Time to be Spent per MCQ

No. of Questions

Reading Time (Mandatory) A

B

C

20 min

All MCQs

16 MCQ

1-2 min per MCQ

Stand Alone MCQ

10 MCQ

1-2 min per MCQ

6 MCQ

3 min per MCQ

Diagram/ Graph/ Competency MCQ Competency/ Case-based MCQ

2Q (4 MCQ each)

Total Time to be spent

2-3 min per MCQ

25 min (max)

35 min (max)

20 min (max)

Revision Time (optional)

10 min

TOTAL TIME:

90 min

How to Solve MCQs in Mathematics? • During the reading time, give the case study-based questions a quick read to understand what is asked. • Observe the questions that are inferential in nature carefully and choose the correct option only when you are 100% sure. • The Competency-based MCQs are usually dependent on each other. So, start by solving the variables and then 1-by-1 solve the MCQs in the order given.

Social Science Section

MCQ Type

No. of Questions

Time to be Spent per MCQ

Reading Time (Mandatory)

A

B

Stand Alone MCQ

24 MCQ

Stand Alone MCQ

8 MCQ

Mixed Type MCQ

11 MCQ

A-R Type MCQ

3 MCQ (6)

1 min per MCQ

2-3 min per MCQ

Total Time to be spent 20 min 20 min (max) (for 20 MCQ)

40 min (max) (for 18 MCQ)

C

Source-based MCQ

12 MCQ

1-2 min per MCQ

D

Map-based MCQ

2 MCQ

1-2 min per MCQ

15 min (max) (for 10 MCQ)

5 min (max) (for 2 MCQ)

Revision Time (optional)

10 min

TOTAL TIME:

90 min

How to Solve MCQs in Social Science? • Get familiarized with the source-based MCQs in the reading time only. Give the passage a quick read so you can save time later to mark the OMR sheet. • Map-based MCQs are usually the easiest to answer, so you can get them done during reading time or as soon as the question paper is given to you. • It is common to leave out a sub-part of a question when you are stressed about a lengthy paper. So, try to stay calm and answer the questions in the serial.

English Language and Literature Section

MCQ Type

No. of Questions

Time to be Spent per MCQ

Reading Time (Mandatory) A Reading

Passage-based MCQs

B Grammar

Stand Alone MCQs

B Writing

Letter-based MCQs

C Literature

Extract-based MCQs Stand Alone MCQs

2Q (14 MCQ) 5 MCQ

2 min per MCQ

Total Time to spent 20 min 25 min (max)

1 min per MCQ 10 min (max)

5 MCQ 4Q (20 MCQ) 10 MCQ

1 min per MCQ

2 min per MCQ

45 min (max) (for 26 MCQs)

1 min per MCQ

Revision Time (optional)

10 min

TOTAL TIME:

90 min

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How to Solve MCQs in English Language and Literature? • Extract-based MCQs are the most scoring ones. Make sure to read the extract carefully and try to understand its central theme before answering the MCQs. • Reasoning with the Writing section MCQs is a must. You must be able to justify your choice with what is asked in the question. • There are new, inference-based MCQs asked in every section now. Analyse to each situation and pick the best possible answer.

Hindi A Section

Time to be Spent per MCQ

No. of Questions

Reading Time (Mandatory)

vifBr cks/k

2Q

(Reading)

(5 MCQ each)

O;kogkfjd O;kdj.k

4Q

(Grammar)

(4 MCQ each) 2Q (5 MCQ each)

Total Time to be spent 20 min

2-3 min per MCQ

25 min (max)

1-2 min per MCQ

25 min (max)

2-3 min per MCQ

25 min (max)

1-2 min per MCQ

5 min (max)

ikB~;iqLrd

(Literature)

2Q (2 MCQ each) Revision Time (optional)

10 min

TOTAL TIME:

90 min

How to Solve MCQs in Hindi A? • Read each option and sub-parts in extract-based questions. • Look for internal choices and mark the questions you think you can answer the best in the first 20 minutes of reading time. • If unsure, follow the rule of elimination to come up with the right option.

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Hindi B Section

Time to be Spent per MCQ

No. of Questions

Reading Time (Mandatory)

vifBr cks/k

2Q

(Reading)

(10 MCQ)

O;kogkfjd O;kdj.k

4Q

(Grammar)

(16 MCQ)

1Q (4 MCQ)

Total Time to be spent 20 min

2-3 min per MCQ

25 min (max)

1-2 min per MCQ

20 min (max)

2-3 min per MCQ

10 min (max)

2-3 min per MCQ

25 min (max)

ikB~;iqLrd

(Literature) 2Q (10 MCQ)

Revision Time (optional)

10 min

TOTAL TIME:

90 min

How to Solve MCQs in Hindi B? • Make the most of the 20 minute reading time to read and mark the questions you know the answers to. Attempt these questions first. • Leave the questions for the end in which you are doubtful. • All questions hold equal marks. So, avoid spending too much time on a question and abide by the above time management chart.

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• New substances formed. • Changes in chemical properties. Eg: - Rusting of iron - Curdling of milk - Burning of Candle (wax combines with atmospheric O2 to give CO2 ) - Combustion of LPG

CHEMICAL CHANGE

Change in state Change in colour Evolution of a gas Change in temperature Formation of precipitate

One or more substances react to form new compounds with new properties. Eg: - Heating copper wire in presence of air. - Magnesium ribbon is usually cleaned before burning in air as it has a coating of magnesium oxide due to a chemical reaction which hinders the process of burning.

Chemical Reaction

• • • • •

Observations that help to determine a chemical reaction

CHEMICAL REACTIONS AND EQUATIONS

NCERT Book Ch-1

Ch 1 :

REPRESENTATION

14 2PbO + 4NO2 + O2

• It is a symbolic representation of chemical reaction through symbols and formulae. • Physical state of an element is written as gas (g), liquid (l), solid (s) and when solution made in water called aqueous (aq). • The reaction conditions such as temperature, pressure and catalyst are indicated above or below the arrow.

Chemical Equation

• Skeletal equation: number of atoms of each element on both sides are not equal. • Balanced chemical equation: number of atoms of each element on both sides are equal. 2H2 + O2 2H2O

Writing Chemical Equation

Eg: 2Pb(NO3 )2

• Number of atoms of each element should be equal on both sides. • Follows law of conservation of mass (Mass Reactants = Mass Products).

Balancing Chemical Equation

• No new substances formed. • Change in physical properties of substances such as shape, size, color or density Eg: - Boiling of water water vapour - Melting of ice water - Dissolution of salt into water

PHYSICAL CHANGE

Objective Section MAP

Chemical Reactions and Equations

Heat is absorbed Eg: CaCO 3(s) CaO(s) + CO2 (g)

Endothermic Reaction

Heat is produced or released Eg: - Respiration oxidation of glucose (to releases energy) CO2(g) + 2H2O - CH4(g) + 2O2(g)

Exothermic Reaction

Two elements or compounds combine to form new compounds Eg: - 2Mg(s) + O2(g) 2Mgo(s) - CaO(s) + H2O Ca(OH)2 + Heat (Used in whitewashing)

Combination Reaction

15

A reactant breaks down in presence of sunlight Eg: 2AgBr Sunlight 2Ag + Br2 (AgBr salt: Black and White photography)

Photochemical Decomposition

A reactant breaks down on applying electric current. Eg: Electric 2H2O(l) current 2H2(g) + O2(g)

Electrolytic Decomposition

Cu + H2O

How to avoid - By using antioxidants (reducing agents) - By packing in airtight containers - By keeping vegetables, fruits in fridge - By ushing (ex: bag of chips) with N2 gas

Oxidation of oils and fats in food resulting in bad smell and taste.

Reduction Reaction

White ppt

• Reaction between an acid and base to form salt and water. Eg: HCl + NaOH NaCl + H2O

Neutralization Reaction

• Takes place only when there is a formation of highly soluble salt.

Yellow ppt

• After a chemical reaction when one of the products formed in solid state called precipitation reaction. Eg: Pb 2 2KNO3 Pb(NO3 )2 + 2K

• Two compounds exchange their ions to form new compounds. Eg: Na2SO4 + BaCl2 BaSO4 + 2NaCl

Double Displacement Reaction

• More reactive element displaces less reactive element from its compound. Eg: FeSO4 + Cu Fe + CuSO4 Fe displaces Cu from CuSO4 and changes color from blue to light green.

Displacement Reaction

• Metals are eaten up by action of air, water and other substances. • Iron is corroded by atmospheric oxygen and humidity and form red-brown substance called rust. How to avoid Painting, Greasing, Galvinisation, Electroplating

Corrosion

Substance which gives hydrogen or gain oxygen or that which oxidises itself is a reducing agent.

Reducing Agent

Substance which gives oxygen or gains hydrogen or, that which reduces itself is an oxidising agent.

Oxidising Agent

• Gain of hydrogen atoms • Loss of oxygen atoms Eg: CuO + H2 Cu + H2O

EFFEC TS OF OXIDATION (In Everyday Life)

CuO + H2

Oxidising Reducing Agent Agent

Oxidation Reduction

Reaction in which both oxidation and reduction takes place. Eg: ZnO + C Zn + CO

Redox Reaction

• Gain of oxygen atoms • Loss of hydrogen atoms Eg: 2Cu(s) + O2 2CuO(s)

Oxidation Reaction

Rancidity

A single compound breaks into two or more elements/compounds on heating. Eg: 2FeSO4(s) Fe2 SO3 (s) + SO2 (g) + SO3 (g)

Thermal Decomposition

Decomposition reactions are always endothermic.

One compound (or reactant) requires energy (heat, light or electricity) to break into two or more elements/compounds or products. Eg: FeSO4(s) Fe2O3 + SO2 + SO3

Decomposition Reaction

TYPES