CBSE Class 9 - Maths - Ch6 - Lines and Angles

Understanding Basic Terms.

Fill in the Blanks 

1. A point, a line and a plane are' basic concepts of geometry. These terms are _____ (well defined/undefined).

2. A line with two end points is called a _________ (line-segment/ ray).

3. A terminated line can be produced ________ (within defined limits/indefinitely).

4. A part of a line with one end point is called a _____ (line-segment/ray).

CBSE Class 7 - Our Pasts-II - Ch2 - New Kings and Kingdoms #class7History #eduvictors

New Kings and Kingdoms

Q1: Locate the Gurjara-Pratiharas, Rashtrakutas, Palas, Cholas and Chahamanas (Chauhans) etc. Can you identify the present-day states over which they exercised control?

Answer:

Dynasty	Present Day States
Gurjara-Pratihara	Western Uttar Pradesh, Northern Madhya Pradesh
Chahamanas (Chauhans)	East Rajasthan, Parts of Gujarat, Delhi, Haryana
Parmars	Parts of Uttar Pradesh and Madhya Pradesh
Chandelas	Eastern Uttar Pradesh
Rashtrakutas	Maharashtra, Central Madhya Pardesh, Parts of Andhra Pradesh and Karnataka
Palas	Bengal, Parts of Bihar, North East part of India
Kalinga	Orissa and parts of Bihar
Cholas	Tamilnadu and some parts of Andhra Pradesh
Pandyas	Kerela
Cheras	Karnataka
Chalukayas	Karnataka

CBSE Class 10 - Science - CH2 - Acids, Bases and Salts

Acids, Bases and Salts

credits:clker.com

MCQs, NCERT Solutions, Q & A

Q1: The most commonly used indicator in laboratory is
(a) Methyl Orange
(b) Litmus
(c) Phenolphtalein
(d) Universal Indicator

Answer:  Universal Indicator



Q2: Olfactory indicators are:
(a) Clove
(b) Turmeric
(c) Soap
(d) Rose Petals

Answer: (a) Clove

CBSE - Class 8 - Maths - Cubes and Cube Roots

Important Points 
& NCERT Solutions

1. If n is a perfect cube then n = m³ or m is the cube root of n. i.e. (n = m × m × m) 

2. A cube root is written as ∛n or n^1/3.

3. ∛2, ∛3, ∛4 etc. all are irrational numbers.

4. The cube root of negative perfect cube is negative. i.e.

    (-x)³=  -x³ 

CBSE - Class 9 - CH2 - Is Matter Around Us Pure

Q1: On the basis of composition, how matter is classified?

Answer:

• Pure Subtance
• Mixture

Q2(NCERT): What is meant by a pure substance?

Answer: A sample of matter containing only one substance is called a pure substance. In other words all constituents of the substance are same in their chemical nature.

SYNONYMS (Quiz)

SYNONYMS

Each of the following consists of a word in capital letters followed by four words or groups of words. Select the words or group of words that is most similar in meaning to the word in capital letters.
(Taken from various competitive examinations like NDA, CDS, University graduate entrance, TET ...)

1. GENIAL
(a) Generous
(b) Wonderful
(c) Liberal
(d) Friendly and cheerful

CBSE - Class 9 - Social Science SA1 Paper (2011)

Class 9- Social Science - SA1 - Paper

CBSE Class 9 English (C) - Unit 4 - MODALS

src:wpclipart.org

Unit 4 - MODALS

A. Ability

1. What are the ten different ways in which you can use a ruler other than its regular use? List your answer below.

     e.g. You can use it to dig holes.

Answer:

Watch Wonders of The World

Google initiated a new education project called the World Wonders Project. It offers various monumental sites of historical, architectural and natural interest. It includes monuments, memorials, cathedrals, castles, landscapes.

Along with a 3D street view, there is ample information available to enrich your knowledge. The only caveat is, currently no Indian site is covered. Hope we shall see it very soon.

CBSE Class 9- CH5: Introduction to Euclid's Geometry

Fragment of Euclid's Elements
source: wikicommons

NCERT Chapter Solutions
and Other Q & A

Exercise 5.1

Q1: Which of the following statements are true and which are false? Give reasons for your answers.

(i) Only one line can pass through a single point.

(ii) There are an infinite number of lines which pass through two distinct points.

(iii) A terminated line can be produced indefinitely on both the sides.

(iv) If two circles are equal, then their radii are equal.

(v) As shown in Fig. below, if AB = PQ and PQ = XY, then AB = XY.

Answer: