JEE 2017 - Main and Advanced Examination Dates Announced

JEE 2017 - Main and Advanced Examination Dates Announced

JEE is the topmost examination conducted to get admissions in UG engineering or architecture courses in NITs, IITs and other institutions. It is a 2 stage  examination i.e.

Ist Stage - JEE Mains examination - to get admission in NIT, IIITs and other engineering colleges.
2nd Stage - JEE Advanced to get admission to IITs, IIS and other premier institutes.

Important Changes Made in JEE Main 2017

Class 7 - Science - Weather, Climate and Adaptation of Animals to Climate (MCQs)

 Weather, Climate and
Adaptation of Animals to Climate 

Protect Our Environment

Class 7 - Science - NCERT Exemlar MCQs Answers

Q1: The maximum and minimum temperature displayed daily in the weather bulletin refer to the –

(a) highest day temperature and lowest night temperature of the day.
(b) highest day temperature and highest night temperature of the month.
(c) temperature recorded at 12 noon and at mid night (00.00 hrs).
(d) average highest temperature of day and average lowest temperature of night.




Q2: Paheli went to a wildlife sanctuary where she saw dense vegetation of trees, shrubs, herbs and also a variety of animals like monkeys, birds, elephants, snakes, frogs, etc. The most likely location of this sanctuary is in the –

(a) temperate region
(b) tropical region
(c) polar region
(d) coastal region




Q3: Out of the given definitions, which is the most appropriate definition of climate?

(a) Changes in weather conditions in a year.
(b) Average weather pattern of many years.
(c) Change in weather pattern in a few years.
(d) Weather conditions during summer.



Q4: Which of the following briefly describes the desert climate?

(a) Hot and humid
(b) Dry and humid
(c) Hot and dry
(d) Hot and wet

CBSE Class 10 - History - THE RISE OF NATIONALISM IN EUROPE

THE RISE OF NATIONALISM IN EUROPE

Commonly Asked Questions

Q1: What was Federic Sorrieu's dream of 'Democratic Republics'?

Answer: In 1848, Federic Sorrieu prepared a print called 'The Dream of Worldwide Democratic and Social Republic. He tried to visualise his dream of a world made up 'democratic republics'. According to him:

1. People of Europe and America marching and forming a long train towards the statue of liberty and offering homage to it.

2. He personified liberty as a female figure.

3. In his glorified dream, he grouped people of the world as distinct nations which are identified by their national costumes and national flags.

4. From heavens, Saints and angels gaze upon the scene symbolising the fraternity among the nations of the world.


Q2: How the concept of nation was visualised in Europe in 18th and 19th century?

Answer:
1. Artists in 18th and 19th centuries tried to give a face and personify the concept of a nation.
2. Nations were portrayed as female figures and alma mater (motherlands).
3. The Female figure became an allegory of the nation. e.g. Germania. In her visual representation, Germania wears a crown of oak leaves as the German Oak stands for heroism.

CBSE Class 9, 10, 11, 12 - Mathematics - Know about Special Constants

Know about Special Constants

Change is the only constant in our lives. However, there are constants or constant numbers that are frequently used in the domains of Science, Mathematics, Economics etc.

Do you know what is golden ratio?

What is the value of Pi?

What are transcendental numbers?

What's the value of cube root of 2?

CBSE Class 6, 7 - English Grammar Worksheet -2 (2016)

BASIC ENGLISH GRMMAR QUIZ

Worksheet for Standrard V, VI and VII students.

Tough Level: Easy

Write the correct option which you find the most appropriate. 

1.  The plural of dynamo is 

(a) dynamos
(b) dynamoes
(c) dynamose
(d) dynamoss


2. ‘The carpets have been cleaned’. The singular of this sentence is 

(a) The carpets have been cleaned
(b) The carpetse have been cleaned
(c) The carpett has been cleaned
(d) The carpet has been cleaned


3. ‘He walked himself homewards, whistling like a lark’.
     'Like a lark' here is a 

(a) simlie
(b) metaphor


4: Identify the correct sentence from the following:

(a) The team play.
(b) The class make too much noise
(c) The machinery was damaged while transporting.
(d) The milk are in the refrigerator.

CBSE Class 11 - Biology - Chapter 2 - Biological Classification (Q and A)

CBSE Class 11 

Biology  

Chapter 2 - Biological Classification

NCERT Chapter Solutions

Q1: Discuss how classification systems have undergone several changes over a period of time?

Answer: The classification systems have undergone several changes with time.

① The first attempt of classification was made by Aristotle. He classified plants as herbs, shrubs, and trees. Animals were classified on the basis of presence or absence of red blood cells. This system of classification failed to classify all the known organisms.

② Linnaeus gave a two kingdom system of classification i.e. kingdom Plantae and kingdom Animalia. However, this system did not differentiate between unicellular and multicellular organisms and between eukaryotes and prokaryotes. Thus a large number of organisms could not be classified merely under the two kingdoms.

③ Later a five kingdom system of classification was proposed by R.H Whittaker in 1969. On the basis of characteristics, such as cell structure, mode of nutrition, presence of cell wall, etc., five kingdoms, Monera, Protista, Fungi, Plantae, and Animalia were formed.

④ Later Monera was divided further into Archaebacteria and  Eubacteria because Archaebacteria were different from bacteria in terms of different type of cell wall structure.


Q2: Who is known as Father of Taxonomy? Name the book he published on taxonomy. What's his the greatest contribution in naming species.

Answer: Linnaeus. In 1758 he published his famous book systema naturae. His greatest contribution to taxonomy was the use of binomial nomenclature for all species of animals and plants


Q3: State two economically important uses of:

(a) Heterotrophic bacteria
(b) Archaebacteria

Answer:
(a) Uses of Heterotrophic bacteria

• Commercial and Domestic Use: They (Lacto bacillus) help in the production of curd from milk.
• Decomposers that help in the formation of humus.
• Medicinal use: Many antibiotics are obtained from some species of bacteria.
• Nitrogen Cycle: Many soil bacteria help in fixation of atmospheric nitrogen.

(b) Uses of Archaebacteria

• Live in guts of  ruminant animals such as cows and buffaloes and they produce methane anaerobically (biogas) from the dung of these animals.
• Methanogens are also involved in the formation of biogas and sewage treatment.

Q4: What is the nature of cell-walls in diatoms?

Answer: The cell wall of diatom is made of silica. It consists of two thin overlapping shells that fit into each other such as a soap box with lids. When the diatoms die, the silica in their cell walls gets deposited in the form of diatomaceous earth. This diatomaceous earth, being gritty, is used in polishing, filtration of oils and syrups.


Q5: Name the algae which is a source of iodine.

Answer: Brown algae called kelps, specially from species of Laminaria.

CBSE Likely To Reintroduce CBSE Class X Board Exams From 2018

CBSE Likely To Reintroduce CBSE Class X Board Exams From 2018

Most likely the meeting on October 25, 2016 would take a final call whether to reintroduce Class 10 Board Examination from 2018 on wards. The meeting will be conducted by Central Advisory Board of Education (CABE) and it will be chaired by Union HRD Minister Prakash Javadekar.

To reduce pressure on students CBSE decided to scrap Class 10 board examination six years ago. According to HRD, the feed back received about the falling academic standards and students unable to take pressure directly appearing in Class XII board examination, the ministry is reviewing the decision.