Sunday, 7 August 2016

CBSE Class 9 - Lines and Angles (Worksheet-2)

Lines and Angles (Worksheet-2)

CBSE Class 9 - Lines and Angles (Worksheet-2)

Question: Fill in the blanks

1. Three or more points said to be __________ if there is a line which contains all these points.


2. Two lines are called ___________ lines, if they have common point.


3. Three or more lines intersecting at the same point are called as ____________ lines.


4. An angle whose measure is less than 90° is called _________ angle.


5. An angle whose measure is 90° is called _________ angle.


6. An angle whose measure is more than 90° but less than 180°, is called _______ angle.

Thursday, 28 July 2016

CBSE 6 - 12 - English Grammar - Kinds Of Sentences (Part 2)

KINDS OF SENTENCES (Part 2)

Class (6 - 12) English Grammar - KINDS OF SENTENCES (Part 1)


You may see the first post on Kinds Of Sentences (Part-1)

Based on forms, sentences are of three types:

➊ Simple Sentences

➋ Compound Sentences

➌ Complex Sentences

Simple Sentence: A simple sentence has one subject, one predicate or finite verb.
e.g.

Rosy runs very fast.

They run very fast.

My friend is very intelligent.

Gold and Platinum are precious metals.

The train was late.

In the above sentences, words in black boxes are subjects while words in green boxes are predicates. See above the sentence "Gold and Platinum...", a conjunction is used to make a single subject.

Compound Sentences: In such sentences two or more co-ordinate clauses (independent of each other) are joined by a conjunction.

Examples are:
❶ Clouds appeared and it became to rain.

❷ You may stay or you may leave.

❸ I waited for the train, but it was late.

❹ The girls went to the disco but did not go to the cinema.

Friday, 15 July 2016

CBSE Class 8 - Science - COMBUSTION AND FLAME (HOTS Questions and Answers)

COMBUSTION AND FLAME

CBSE Class 8 - Science - COMBUSTION AND FLAME (HOTS Questions and Answers)
Forest Fires - Why do forests catch fire in hot summers?

HOTS Q & A (Class 8 Living Science Textbook Chapter Solutions)


Q1: Only gases burn with a flame. When you burn wood it initially burns with a flame. Later it only glows without a flame. What do you think the answer is?

Answer: Wood contains many chemicals like resin, lignin. When heated, these chemicals broke up and release combustible gases. That's why wood burns initially with a flame. When these gases are exhausted, wood burns without flame.


Q2: Would you consider coal as a good fuel? Give reasons?

Answer: Coal is not considered as a good fuel because of the following reasons:

1. It has low calorific value as compared to Petroleum and LPG.

2. On burning it releases many polluting gases like CO2 which is a green house gas and it causes global warming.

3. Coal contains traces of Sulphur and Nitrogen which on burning gives harmful gases like Nitrogen Oxide and Sulphur Oxide. These gases when mixed with rain water cause acid rain.

4. Unburnt traces of carbon also causes respiratory problems.


Q3: When a fuel is burnt, carbon dioxide (or carbon monoxide) and water vapour are given out. Can you name one fuel which burns without giving off water vapour? Why does it not give out water?

Answer: Charcoal is pure form of carbon. When it burns with oxygen, it forms carbon dioxide and no waters vapours are given off.


Q4: Why does a matchstick burn on rubbing it on the side of the match box?

Answer: Matchstick uses chemicals like phosphorus which has low ignition temperature (35°C). When the stick is rubbed, due to friction heat is generated which is sufficient to raise temperature to above 35°C and ignites the stick.

Sunday, 3 July 2016

CBSE Class 8 - Science - MICROORGANISMS AND VIRUSES – Friends and Foes! (Q and A)

MICROORGANISMS   AND VIRUSES – Friends and Foes!

(Chapter Solutions of textbook Prachi Science for Class 8)

CBSE Class 8 - Science - MICROORGANISMS   AND VIRUSES – Friends and Foes! (Q and A)
Fungal Infected Bread


Q1.  Answer in one word.

1. Name two typical habitats of micro-organisms

Answer: Commonly found everywhere – in the air, in water, inside the bodies of living organisms.

2. Name a disease caused by bacteria

Answer: Tuberculosis, Pneumonia

3. Name the microorganism that is used for obtaining alcohol from sugar.

Answer: Yeast.

4. Name one carrier of disease-causing microorganisms.

Answer: House Fly which causes many diseases like cholera, typhoid, diarrhoea.


5. Where do the external parasites of animals live?

Answer: External parasites like lice, flies, ticks, grubs etc. live on the skins of the animals.


Q2. Short- Answer Questions (10-15 words)

Wednesday, 22 June 2016

CBSE Class 9 - Chemistry - CH2 - Is Matter Around Us Pure? (Short Q and A)

Is Matter Around us pure?

Short Q & A

CBSE Class 9 - Chemistry - CH2 - Is Matter Around Us Pure? (Short Q and A)
Simple Distillation Technique.
Can you name the labelled parts? See answer at wikimedia


Q1: Who was the first scientist to use the term 'element'?

Answer: Robert Boyle was the first scientist to use the term element in 1661.


Q2: Name the chemist who for the first time, defined an element as a basic form of matter that cannot be broken down into simpler substances by chemical reactions.

Answer: Antoine Laurent Lavoisier (1743-94), a French chemist


Q3: Who is known as the father of Modern Chemistry?

Answer: Antoine Laurent Lavoisier (1743-94), a French chemist


Q4: Do physical changes alter the identity of a substance?

Answer: No.


Wednesday, 15 June 2016

Class 8 - Maths - Algebraic Expressions and Identities (NCERT Ex 9.2 Answers)

Algebraic Expressions and Identities 


(NCERT Ex 9.2 Answers)


Class 8 - Maths - Algebraic Expressions and Identities (NCERT Ex 9.2 Answers)

Q1: Find the product of following pair of monomials.

(i) 4 , 7p


Answer:

4   ☓   7p = 4  ☓ 7   ☓ p = 28p

(ii) -4p , 7p

Answer:

-4p   ☓   7p = -4 ☓ p ☓ 7  ☓ p = (-4☓7)☓ (p☓ p) = -28p2

(iii) 4p , 7pq

Answer:

-4p  &#9747 7p = -4 ☓ p ☓7  ☓ p  ☓ q = (-4☓ 7)☓ (p☓ p☓ q) = -28p2q

(iv) 4p3 , -3p

Answer:

4p3  ☓  -3p = 4  ☓(-3)   ☓ p ☓ p☓ p☓ p = -12p4

(v) 4p , 0

Answer:

4p ☓ 0 = 4☓ p☓ 0 = 0


Q2: Find the areas of rectangles with the following pairs of monomials as their lengths
and breadths respectively.

(p , q);(10m , 5n);(20x2 , 5y2);(4x , 3x2);(3mn ,4np)


Answer:

We know that,

Area of rectangle = Length ☓ Breadth

Area of 1st rectangle = p ☓ q = pq

Area of 2nd rectangle = 10m ☓ 5n = 10☓ 5 ☓ m ☓ n = 50mn

Area of 3rd rectangle = 20x2 ☓ 5y2 = 20☓ 5 ☓ x2 ☓ y2 = 100x2y2

Area of 4th rectangle = 4x ☓ 3x2 = 4☓3 ☓ x ☓ x2 = 12x3

Area of 5th rectangle = 3mn ☓4np = 3☓ 4 ☓ m ☓ n ☓ n ☓ p = 12mn2p


Q3: Complete the table of products.

First Monomial (⇨)
Second Monomial(⇩)
2x -5y 3x2 -4xy 7x2y -9x2y2

2x 4x2 ... ... ... ... ...
-5y ... ... -15x2y ... ... ...
3x2 ... ... ... ... ... ...
-4xy ... ... ... ... ... ...
7x2y ... ... ... ... ... ...
-9x2y2 ... ... ... ... ... ...


Answer:

Monday, 6 June 2016

CBSE Class 10 - Science - CH7: Control and Coordination (VSQA)

CONTROL AND COORDINATION

CBSE Class 10 - Science - CH7: Control and Coordination (VSQA)

Very Short Question And Answers



Q1: Which chemical induces artificial ripening of fruits?

Answer: Ethylene


Q2: What is stimulus?

Answer: The changes in the environment to which an organism responds and reacts is called stimulus.


Q3: Name the longest cell present in the human body.

Answer: Neuron is the longest cell in the human body.


Q4: Give examples of glands which act as both endocrine and exocrine.

Answer: Pancreas, Testes, Ovaries


Q5: What are nastic movements?

Answer: Movements of plants which are independent of stimuli are called nastic movements. e.g. movement by Touch-Me-Not (Mimosa) plant i.e. leaves close or droop when touched.


Q6: Where do you find gustatory receptors?

Answer: On the tongue.


Q7: What do olfactory receptors detect?

Answer: They detect smell.


Q8: Name the hormone released by thyroid gland.

Answer: Thyroxin.


Q9: Where is Hypothalmus is located?

Answer: In the brain.

Sunday, 5 June 2016

Class (6 - 12) English Grammar - KINDS OF SENTENCES (Part 1)(#eduvictors)(#englishgrammar)

KINDS OF SENTENCES (Part 1)

Class (6 - 12) English Grammar - KINDS OF SENTENCES (Part 1)

Sentences based on functions are categorised as follows:

1. Assertive Sentences
2. Interrogative Sentences
3. Imperative Sentences
4. Optative Sentences
5. Exclamatory Sentences

Assertive Sentences

These sentences merely assert an incident or a fact.
e.g.
The sun is a big star. (Affirmative)
The Taj is a beautiful monument.         (Affirmative)
He is not in Delhi. (Negative)
It does not glow at night.         (Negative)

Sentences that affirm one or the other fact are called affirmative sentences. First two sentences listed above are affirmative ones.

Sentences that negate a fact are called negative sentences. The last two sentences listed above are negative sentences.

Exercise:
Convert the following affirmative sentences into negative sentences by giving negative meaning also.

1. I like him.
2. Banana is a sweet fruit.
3. They play for Delhi Soccer club.
4. We sing a song.
5. He gets up early.


Answers:
1. I do not like him.
2. Banana is not a sweet fruit.
3. They do not play for Delhi Soccer club.
4. We do not sing a song.
5. He does not get up early.


Monday, 30 May 2016

CBSE Class 9 -12: English Grammar Quiz

ENGLISH GRAMMAR QUIZ
CBSE Class 9 -12: English Grammar Quiz

[Questions from SSC Exam Paper 2014]
Q (1 - 5) In these questions some part of the sentences have errors and some are correct.Find out which part of the sentence has error and mark that part (A), (B) or (C). If a sentence is free from error, then mark (D) as your answer.


Q1: In his book (A)/ Churchill describes (B)/ that historical first meeting with Roosevelt (C)/ No error (D).

Q2: The ant who was nearby (A) / walked forward and bit the hunter (B)/ sharply in the ankle (C) / No error (D).


Q3: They can promise you (A) / an experience (B) / you won't never forget (C)/ No error (D)


Q4: The dress that the (A) / girl wore was (B)/ more attractive than the other girls (C)/ No error (D)


Q5: Fifty years has passed (A)/ since man first ventured (B)/ in outer space (C)/ No error (D).


Directions (6 - 10): Fill up the blanks with approproate word(s) in the sentences. Four options are given, choose the correct one. 


Q6: I can ______ him without qualifications.

(a) recommend
(b) commend
(c) praise
(d) suggest


Q7: She let her horse ________ in the field.

(a) loosen
(b) loose
(c) loosely
(d) lose

Wednesday, 18 May 2016

Class 12 - Physics - Chapter 4: Moving Charges and Magnetism (VSQA)

Moving Charges and Magnetism

Very Short Q & A

Class 12 - Physics - Chapter 4: Moving Charges and Magnetism (VSQA)

Q1: Define Magnetic Field.

Answer: The space around a magnet within which its effect is experienced is called Magnetic Field (B).


Q2: What is the SI unit of magnetic field?

Answer: Tesla. Another unit is Newton Ampere-1 metre-1


Q3: What is a solenoid?

Answer: A solenoid is a circular coil of a large number of turns, such that the turns of solenoid run parallel to its length. It acts similar to a bar magnet.


Q4: What is Lorentz force?

Answer: The total force on a charge (q) moving with a velocity (v) in the presence of magnetic and electric field (B and F) respectively is called Lorentz force.


Q5: What is a cyclotron?

Answer: It is a machine to accelerate charged particles or ions to high energies


Q6: What is the operational definition of one ampere?

Saturday, 14 May 2016

CBSE Class 8 - Science - METALS and NON Metals : Question and Answers

METALS and NON Metals : 
Question and Answers

Prachi Class 8 Science Textbook Solutions

CBSE Class 8 - Science - METALS and NON Metals : Question and Answers
Activity Series


Q1: Identify the type of elements which are neither malleable nor ductile.

Answer: Non-metals (eg Carbon, Phosphorous, Sulphur, Nitrogen) are neither malleable nor ductile.


Q2: Name a property which is common to the metals occurring near the bottom of the reactivity series.

Answer: These (Silver, Gold and Platinum) are least reactive metals and are found in free state in the earth's crust.


Q3: Name a metal that is kept under kerosene.

Answer: Sodium.


Q4: What type of reaction is the reaction between copper sulphate solution and zinc plate?

Answer: It is a displacement reaction.
        Zn + Copper Sulphate ---------> Zinc Sulphate + Copper

(Explanation: Zinc is more reactive than copper, Therefore Zn displaces Cu.)



Q5: An oxide of sulphur turns blue litmus red. Is it acidic or basic?

Answer: Acidic

Thursday, 5 May 2016

CBSE Class 10 - Physics - CH 12 Electricity (Worksheet)

Electricity

CBSE Class 10 - Physics - CH 12 Electricity (Worksheet)

Worksheet


Fill in the blanks

1. The source of all electricity is ______. It’s SI unit is _________.


2. The net charge flowing through a cross section of a conductor in unit time is called ________.


3. Electric potential difference between points in an electric circuit is the ______ _______ to move a unit charge from one point to other. i.e. 1V = ____/1C.


4. Current is measured in Amperes using _______.


5. If 90 coulombs charge passes through the conductor for 5 minutes, then the current in the conductor is _____.


6. A _________ is an electronic measuring instrument the combines several measuring functions (electric potential difference, electric current and electric resistance) in one unit.


Saturday, 30 April 2016

CBSE Class 9: Biology - Chapter - Fundamental Unit of Life - Quiz on Cell Organelles

Quiz on Cell Organelles

Identify the labelled parts of cell and name them.
Answer given below.
Image Attribution: By Kelvinsong (Own work) [CC0], via Wikimedia Commons


Read the following questions. Each question gives you a hint about a cell organelle, identify and write down its name.


Q1: Jelly like substance containing particles and other organelles. What is it?

Q2: A partially permeable layer prevents cell contents from escaping controls what substances enter and leave the cell. Identify?

Q3: A fluid-filled space surrounded by a membrane. Generally contains salts and sugars in plants.

Q4: Contains green colour pigment, traps light energy. Present in some plant cells.

Q5: Appear brown dots either present freely in cell or bound to a membrane and make proteins.

Thursday, 28 April 2016

CBSE Class 8 - Geography - LAND, SOIL, WATER, NATURAL VEGETATION AND WILDLIFE RESOURCES (NCERT Chapter Solutions)

LAND, SOIL, WATER, NATURAL VEGETATION AND WILDLIFE RESOURCES

CBSE Class 8 - Geography - LAND, SOIL, WATER, NATURAL VEGETATION AND WILDLIFE RESOURCES (NCERT Chapter Solutions)

NCERT Chapter Solutions and other Q & A



Q1. Which are the two main climatic factors responsible for soil formation?

Answer: Temperature and rainfall


Q2: Write any two reasons for land degradation today.

Answer:

  i. deforestation,
  ii. overgrazing,
  iii. overuse of chemical feritilisers or pesticides,
  iv. landslides and floods
  v. urbanization on arable land


Q3: Why is land considered an important resource?

Answer: Land is considered as an important resource because:

i. it provides habitation to a wide variety of flora and fauna.
ii. We use it for various purposes such as agriculture, forestry, mining, building houses and roads, and setting up industries.


Q4: What type of land is sparsely populated or uninhabitated?

Answer: The land having rugged topography, steep slopes of the mountains, low-lying areas susceptible to water logging, desert areas, thick forested areas are normally sparsely populated or uninhabited.


Q5: Name any two steps that government has taken to conserve plants and animals.

Answer: Two steps taken by the government to conserve plants and animals:
i. Setting up national parks, wildlife sanctuaries and biosphere reserves to protect natural vegetation and wildlife. e.g. the Kaziranga National Park in Assam.

ii. Ban on killing or hunting of animals lions, tigers, deer, great Indian bustards and peacocks.

iii. Prohibited trade of the species of plants and animals protected under the international agreement CITES.

Sunday, 24 April 2016

CBSE Class 8 - Living Science (CCE Edition) : Crop Production (Text Book Answers)

Living Science (CCE Edition) : Crop Production 

CBSE Class 8 - Living Science (CCE Edition) : Crop Production (Text Book Answers)

Textbook Answers



Multiple Choice Questions (pg 20)

Q: Which of these is not a cereal?...


Answers:

1: (a) Gram
Explanation: Gram is a legume (pulses) while others are cereals

2: (a) Wheat
Explanation: Wheat is a rabi (winter) crop.

3: (a) organic nutrients
Explanation: Compost is made of dead and decaying organic matter.

4: (a) Wilt
Explanation: Wilt is caused by bacteria while others are fungal infections.

5: (c) it prevents soil erosion.
Explanation: Ploughing loosens soil so that more air can fill up the spaces.

6: (d) All of these

7: (d) ploughing
Explanation: Manuring or Fertilizers or Field Fallowing add nutrients.

8: (b) Combine



VERY SHORT ANSWER QUESTIONS (One word answers) - Pg 20-21

Q1. About how many years ago did agriculture begin?...


Friday, 22 April 2016

CBSE Class 8 - Civics - Chapter 1: The Indian Constitution (Questions and Answers)

Chapter: The Indian Constitution

CBSE Class 8 - Civics - Chapter 1: The Indian Constitution (Questions and Answers)

Q & A based on NCERT chapter




       Want to download the latest Constitution of India document (March 4, 2016). Click here.


Q1: What is a constitution?

Answer: A constitution is document consisting of basic rules or principles according to which the people of a country are governed.


Q2: What purposes are served by Indian Constitution?

Answer: The constitution serves several purposes such as:

  (i)  It lays out certain ideals which form the basis of kind of country we aspire to live in.
  (ii) It helps serve basic set of rules to govern the nation.
  (iii) It defines the nature of political system. It provides guidelines how government should be elected and its machinery should work.
  (iv)  It ensures that a dominant group does not use its power against other, less powerful people or groups.


Q3: Name the national goals laid out by our constitution.

Answer: Democracy, Secularism and Socialism.


Q4: In which of the following situations is a minister misusing his power:

a) refuses to sanction a project of his ministry for sound technical reasons;
b) threatens to send his security staff to rough up his neighbour.
c) calls up the police station asking them not to register a complaint that is likely to be filed against his relative.

Answer: Case (b) and (c) where the minister is misusing his power.


Q5: How does Indian constitution guarantees the right to equality to all citizens?

Answer: The Indian Constitution guarantees the right to equality to all persons and says that no citizen can be discriminated against on grounds of religion, race, caste, gender, and place of birth. It is a Fundamental right.

Sunday, 17 April 2016

CBSE Class 9 - Cell - Fundamental Unit of Life - Question Bank

Question Bank - Cell - Fundamental Unit of Life

CBSE Class 9 - Cell - Fundamental Unit of Life - Question Bank
Plant Cell

Q1: Who observed the cells first time?

Q2: Define Cell

Q3: Who proposed the cell theory?

Q4: Who expanded cell theory by suggesting that all cells arise from pre-existing cells?

Q5: In which year electron microscope was invented?

Q6: Name the book in which Robert Hooke published his observations about cork cells.

Q7: Who discovered nucleus in the cell?

Q8: Name the two postulates of the cell theory.

Q9: Who coined the term 'protoplasm'?

Q10: Name the largest cell?

Q11: Name the world's smallest cell.

Q12: Name the smallest cell in human body.

Friday, 15 April 2016

CBSE - कक्षा ९/१० - हिंदी (Hindi) अपठित काव्यांश

कक्षा ९/१० अपठित काव्यांश 


प्र(cbse 2016): निम्मलिखित काव्यांश को ध्यानपूर्वक पढ़कर पूछे गए प्रशनों के उत्तर लिखिए:

CBSE - कक्षा ९/१० - हिंदी (Hindi) काव्यांश
भूली हुयी यादों, मुझे इतना ना सताओ अब चैन से रहने दो, मेरे पास ना आओ


यादें होती है गहरी नदी में उठी भंवर की तरह
नसों में उतरती कडवी दवा की तरह
या खुद के भीतर छिपे बैठे साँप की तरह
जो औचक्के में देख लिया करता है

यादें होती है जानलेवा खुशबू की तरह
प्राणों के स्थान पर बैठे जानी दुश्मन की तरह
शरीरमें धँसे उस काँच की तरह
जो कभी नहीं दिखता
पर जब तब अपनी सत्ता का
भरपूर एहसास दिलाता रहता है

यादों पर कुछ भी कहना
खुद को कठघरे में खड़ा करना है
पर कहना जरुरत नहीं, मेरी मजबूरी है

() यादों को गहरी नदी में उठी भँवर की तरह क्यों कहा गया है?

() यादों को जानी दुश्मन की तरह मानने का क्या आशय है?

() शरीर में धँसे काँच से यादों का साम्य कैसे बिठाया जा सकता है?

Tuesday, 5 April 2016

Central Teacher Eligibility Test (CTET) Feb 2016 - (Class I-V) Child Development and Pedagogy

Central Teacher Eligibility Test (CTET)
Feb 2016

(Class I-V)
Child Development and Pedagogy

Central Teacher Eligibility Test (CTET)  Feb 2016 - (Class I-V) Child Development and Pedagogy


Q1: Children are most creative when they participate in an activity?

(a) to escape their teacher scolding
(b) under stress to do well in front of others
(c) out of interest
(d) for rewards



Q2: Child-centered pedagogy means 

(a) giving moral education to the children
(b) asking the children to follow and imitate the teacher
(c) giving primacy to children's voices and their active participation
(d) letting the children be totally free


Q3: Most classrooms in India are multi-lingual and this needs to be seen as _______ by the teacher.

(a) a bother
(b) a problem
(c) a resource
(d) an obstacle


Q4: Why do individuals differ from one another?

(a) Because of the impact of the environment.
(b) Due to inborn characteristics
(c) Due to interplay between heredity and environment
(d) Because each individual has received a different gene set from his/her parents.


Sunday, 3 April 2016

Career After 12: Examination Notifications

EXAM NOTIFICATION 2016

CAREER AFTER 12

Career After 12: Examination Notifications

Five Year Integrated Programme in Management
SN. Course Seats University/Institute Date Of Exam.
1 IPM 120 IIM-INDORE May 14, 2016
2 FDDI 120 FDDI June 17-19, 2016

 
Bachelor of Business Adminsitration (BBA)
SN. Course Seats University/Institute Date Of Exam.
1. BBA 5000 GGSIPU (Delhi) May 15, 2016
2. BBA 240 Symbiosis (Pune) May 6, 2016
3. BBA 240 Bhartiya Vidyapeeth (Delhi, Pune) June 14, 2016
4. BBA 80 Kurukshetra University June 28, 2016

 
BMS, BBA (FIA, BBE/BBS-BIBF)
SN. Course Seats University/Institute Date Of Exam.
1. BMS, BBA(FIA), BBE 840 Delhi University June 5, 2016
2. BBS-BIBF 30-40 Jamia Milia May 29, 2016
3. BMS 2500 Mumbai % basis (April/May)