CBSE Class 7 Maths - Chapter 9 - Rational Numbers (Worksheet)(#class7Maths)(#eduvictors)

Chapter 9 - Rational Numbers (Worksheet)

CBSE Class 7 Maths

Fill in the blanks

1. A rational number is a number that can be written in the form p/q, where p and q are ________ and q ____ 0.


2. The ________ of a rational number can never be zero.


3. The rational number _______ is neither negative nor positive.

English Vocabulary - Commonly Confused Words (Part-5) (#eduvictors)(#EnglishVocabulary )

Commonly Confused Words 

(Part-5)

English Vocabulary 

English is full of phrases or words, which sound the same or comparable yet have distinctive meanings and are sometimes confusing too. Here is the third list of commonly confused words.

Biannual, Biennial
Biannual is twice in one year,
Biennial means every two years

CBSE Class 8 - Science - Chapter 18 - Pollution of Air and Water (Worksheet)(#eduvictors)(#class8Science)

Pollution of Air and Water (Worksheet)

CBSE Class 8 - Science - Chapter 18

All organisms including plants, animals (including human beings) and micro-organisms live in a habitat and interact with the ecosystem. Both biotic and abiotic components constitute environment. A harmful change in environment due to pollution cause discomfort and affect the lives of living beings.

Fill in the blanks

1. Substances that cause harmful changes in the air, soil or water are called ___________.


2. Incomplete burning of fossil fuels, like petrol and diesel, results in the production of colourless, odourless and toxic gas called ______________.


3. ________ is a mix, in the air, of smoke and chemicals with fog.


4. CFCs contribute to the depletion of the ________ layer that protects us from the harmful ultraviolet rays of the sun.

CBSE Class 11 Maths Chapter Sets - NCERT Exercise 1.4 (Q 9 - Q 12) (#eduvictors)(#class11Maths)

Class 11  Maths Chapter Sets - NCERT Exercise 1.4 (Q 9 - Q 12)

NCERT Solutions

Q9: If A = {3, 6, 9, 12, 15, 18, 21}, 
  B = { 4, 8, 12, 16, 20 },
C = { 2, 4, 6, 8, 10, 12, 14, 16 }, 
D = {5, 10, 15, 20 }; 
find
(i) A – B 
(ii) A – C 
(iii) A – D 
(iv) B – A
(v) C – A 
(vi) D – A 
(vii) B – C 
(viii) B – D
(ix) C – B 
(x) D – B 
(xi) C – D 
(xii) D – C


Answer: 
(i) A – B    = {3, 6, 9, 15, 18, 21}

(ii) A – C  = {3, 9, 15, 18, 21}

(iii) A – D = {3, 6, 9, 12, 18, 21}

(iv) B – A  = {4, 8, 16, 20}

(v) C – A  = {2,4,8,10,14,16}

(vi) D – A = {5,10,20}

(vii) B – C = {20}

(viii) B – D = {4,8,12,16}

(ix) C – B = {2,6,10,14}

(x) D – B  = {5,10,15}

(xi) C – D = {2,4,6,8,12,14,16}

(xii) D – C = {5,15,20}

CBSE Class 8 - Maths - ALGEBRAIC EXPRESSIONS, IDENTITIES AND FACTORISATION (MCQs) (#class8Maths)(#cbsenotes)(#eduvictors)

ALGEBRAIC EXPRESSIONS, IDENTITIES AND FACTORISATION 

(MCQs)

CBSE Class 8 - Maths

Q1: Which is the like term as 24a²bc?

(a) 13 × 8a × 2b × c × a 

(b) 8 × 3 × a × b × c

(c) 3 × 8 × a × b × c × c 

(d) 3 × 8 × a × b × b × c

CBSE Class 9 Maths - Coordinate Geometry - Concept Points (#class9Maths)(#eduvictors)

Coordinate Geometry - Concept PointsClass 9 Maths

1. The system used for describing the position of a point in a plane is called Cartesian system.

2. To locate the position of a point in a plane, we require two perpendicular lines.

3. The plane is called the Cartesian or coordinate plane and the lines are called the coordinate axes.

English Vocabulary - Commonly Confused Words (Part-4)(#eduvictors)(#englishvocabulary)

Commonly Confused Words 

(Part-4)

English Vocabulary 

English is full of phrases or words, which sound the same or comparable yet have distinctive meanings and are sometimes confusing too. Here is the third list of commonly confused words.

Bad, Badly
Bad means poor quality is used as an adjective after verbs like am, feel, is,
    Badly means unsatisfactory, inadequate and is used as an adverb.