Class 7 - Our Environment - Ch7 - Human Environment - Settlement, Transport and Communication (NCERT Solution)

Human Environment - Settlement, Transport and Communication 

NCERT Chapter Solution

Q1: What are the four means of transport?

Answer:  Four major means of transport are:
(a) Roadways
(b) Railways
(c) Waterways
(d) Airways


Q2: What do you understand by the term ‘settlement’?

Answer: Settlement is a place where people build their homes. It can be temporary or permanent.


Q3: Which are the activities practised by the rural people?

Answer: Rural people practise various activities like agriculture, fishing, forestry, crafts work and trading etc.


Q4: Mention any two merits of railways.

Answer: Merits of railways are:
i. carry heavy goods.
ii. carry people to long distances quickly and cheaply.


Q5: What do you understand by communication?

CBSE Class 6 - 12: English Grammar - Confusing Sentences

Confusing Sentences

1. To go to school - to get education.
    e.g. Sheila is going to school. (It means Sheila is studying there).

    To go to the school - to go for other purpose
    e.g. Sheila's father is going to the school. (It means Sheila's father is visiting school for some purpose, may be inquiring about his daughter's progress.)


2.  To go to play - to take part in games

     To go to the play - to go to a theatre.


3. A black and white dog - One dog which is partly black and partly white.

    A black and a white dog - two different dogs - one black in colour while the other is white in colour.


4. Tell me briefly - Tell me in a short time.

    Tell me shortly - Tell me in short.

CBSE Class 7 - Geography - NCERT Chapter 5 Solutions - Water

Water

NCERT Chapter 5 Solutions

Q1: What is precipitation?

Answer: The condensation of water vapour in the form of water droplets or ice crystals and their falling on the earth surface is known as precipitation.


Q2: What is water cycle?

Answer: Endless movement of  water from sea to air, air to land and from land back to sea is called water or hydro-logical cycle.


➽ Watch online flash animation on Water Cycle.


Q3: What are the factors affecting the height of the waves?

Answer:  Winds and Weather conditions


Q4: Which factors affect the movement of ocean water?

Answer:

• waves
• tides
• currents
• earthquakes
• underwater volcanic eruption
• underwater landslide

Q5: What are tides and how are they caused?

CBSE Class 10 - Biology - CH8 - How do Organisms Reproduce? (Very Short Q and A)

How do Organisms Reproduce?

Very Short Q & A Based on CBSE Question Papers 

Q1: Name the scientist who used the Latin phrase "Omnis cellula e cellula," means "Every Cell From a Cell"?

Answer: Rudolf Virchow, a German Scientist who emphasised that cell produces cells.


Q2: Does Cell Division play an important role in reproduction?

Answer: Yes. It plays important role in both prokaryotes and eukaryotes. It is important in following two ways:
i.  gives rise to a new organism or daughter cell.
ii. in multicellular prokaryotes, cell division renews and repairs cells that die from wear and tear.


Q3: Give an example cell division occurs in human body for continuity of life?

Answer: Bone marrow continuously produce new blood cells.


Q4: What is the crucial function of cell division?

Answer: To pass genetic material (DNA copy) to offspring cellular apparatus.


Q5: What are the types of cell division? Give examples of each

Answer: There are two types of cell division:
i.  Mitotis : This cell division occurs in most of the cells of the body. Parent cells divides into two (or more) offspring cells passing on identical copies of DNA (genetic material).
ii Meosis: This cell division occurs in cells of reproductive organs (called male and female gametes). Each offspring cell contains half copy of DNA material froms its parent cell. When these male and female gametes fuse together, it gives rise to new organism.

CBSE Class 10 - Maths- SA1- Sample Question Paper (2015-16) Second Set

CBSE Class 10 - Maths- SA1- Sample Question Paper (2015-16) Second Set

CBSE Class 10 - Science- SA1- Sample Question Paper (2015-16) - Set2

CBSE Class 10 - Science- SA1- Sample Question Paper (2015-16) Second Set

CBSE Class 7 - Our Environment - Ch 4- Air (NCERT Solution)

 Air

Atmosphere Composition
image credits: wikipedia.
Download poster size image

Class 7 - Geography - NCERT Chapter 4 Solution

Q1: What is atmosphere?

Answer: The thick blanket of air (mixture of gases) around the earth is called atmosphere.


Q2: Which two gases make the bulk of the atmosphere?

Answer: Nitrogen and Oxygen


Q3: Which gas creates green house effect in the atmosphere?

Answer: Ozone, Carbon DiOxide.


Q4: What is weather?

Answer: The state or condition of atmosphere at a particular time and place is called weather.


Q5: Name three types of rainfall?

Answer: Orographic, convectional and cyclonic rain.