CBSE > Class 07 > Science | CBSE Board | Homework Help

Ask questions which are clear, concise and easy to understand.

Ask Question

In India how many types of soil ?

Posted by Rudra Pratap Singh 8 years ago

1 answers

They are (1) Alluvial soils, (2) Black soils, (3) Red soils, (4) Laterite and Lateritic soils, (5) Forest and Mountain soils, (6) Arid and Desert soils, (7) Saline and Alkaline soils and (8) Peaty and Marshy soils (See Fig. 7.1). This is a very logical classification of Indian soils and has gained wide acceptance.

1Thank You

ANSWER

What affect the soil profile ?

Posted by Rudra Pratap Singh 8 years ago

CBSE > Class 07 > Science

1 answers

Rudra Pratap Singh 8 years ago

Temperature of weather ,rainfal, humidity

1Thank You

ANSWER

What is indicator

Posted by Himanshu Gubrele 8 years ago

CBSE > Class 07 > Science

2 answers

Aryan Gupta 8 years ago

a thing that indicates the state or level of something. a device providing specific information on the state or condition of something, in particular: a flashing light or (formerly) other device on a vehicle to show that it is about to change lanes or turn. a compound which changes colour at a specific pH value or in the presence of a particular substance, and can be used to monitor acidity, alkalinity, or the progress of a reaction. an animal or plant species which can be used to infer conditions in a particular habitat.

1Thank You

Rudra Pratap Singh 8 years ago

It is special chemical that changes its colour to indicate the presence of a chemical substance

1Thank You

ANSWER

On which principle the magnet works

Posted by Tanmay Goyal 8 years ago

CBSE > Class 07 > Science

0 answers

ANSWER

Who is the first person on the earth

Posted by Tanmay Goyal 8 years ago

CBSE > Class 07 > Science

0 answers

ANSWER

What is chemical change?

Posted by Kavitha Ragavi 8 years ago

CBSE > Class 07 > Science

1 answers

Arun Soni 8 years ago

A chemical change (chemical reaction) is a change of materials into other, new materials with different properties, and one or more new substances are formed. Burning of wood is a chemical change as new substances which cannot be changed back.

2Thank You

ANSWER

The food synthesised by a plant is stored as___________

Posted by Satyam Pradhan 8 years ago

CBSE > Class 07 > Science

1 answers

Vivek R 8 years ago

starch

0Thank You

ANSWER

How minerals get in soil of roofs where undesirable plants are grown.?

Posted by Nishu Jangra 8 years ago

CBSE > Class 07 > Science

0 answers

ANSWER

Science means

Posted by Kshitij Yadav Yadav 8 years ago

CBSE > Class 07 > Science

0 answers

ANSWER

How nutrients replenished in the soil

Posted by Ridhi Sethia 8 years ago

CBSE > Class 07 > Science

1 answers

Vivek R 8 years ago

THERE IS A CERTAIN BACTERIA NAMED RHIZOBIUM.THEY WILL LIVE IN THE ROOT OF LEGUMINOUS PLANTS.THESE BACTERIAS CONVERT THE NITROGEN IN THE ATMOSPHERE TO USABLE FORM.THE ANOTHER WAY IS PUT FERTILIZERS IN THE FIELD.

0Thank You

ANSWER

What is saprotrophs

Posted by Debasmita Padhi 8 years ago

CBSE > Class 07 > Science

1 answers

Rahul Raj 8 years ago

Saprotrophs are those organisms which depend on dead and decaying organisms for their food like fungi and mushrooms

1Thank You

ANSWER

What is the speed of the tip of a second hand of length 5 centimeter ?

Posted by Anjali Pilania 8 years ago

CBSE > Class 07 > Science

0 answers

ANSWER

What is photosynthesis ?

Posted by Gurneet Kaur 8 years ago

CBSE > Class 07 > Science

1 answers

Anjali Pilania 8 years ago

It is the process by which a plant make it's own food by combining CO2 and water,using solar energy trapped by chlorophyll present in leaves of a plant.

3Thank You

ANSWER

Explain how soil formed.

Posted by Sanjiban Baruah 8 years ago

CBSE > Class 07 > Science

1 answers

Anjali Pilania 8 years ago

By the process of weathering.

1Thank You

ANSWER

An object, moving along a straight line, is said to be in uniform motion if it covers regularly increasing distances in equal intervals of time

Posted by Surya Dev Singh 8 years ago

CBSE > Class 07 > Science

0 answers

ANSWER

Is HCl an organic acid

Posted by Anurag Yadav 8 years ago

CBSE > Class 07 > Science

1 answers

Anjali Pilania 8 years ago

No,it is a mineral acid.

1Thank You

ANSWER

What is physical change?

Posted by Devika Devika 8 years ago

CBSE > Class 07 > Science

1 answers

Praveen Hosakoti 8 years ago

A change in which no new substance is formed is called a physical Change. Only the shape and size changes. Example: Melting of wax, Tearing of paper.

0Thank You

ANSWER

What is environment

Posted by Nida Fatima 8 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Minakshi Kapoor 8 years ago

The surroundings or conditions in which a person, animal, or plant lives or operates.

0Thank You

ANSWER

What are acids

Posted by Student Stu 8 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Arun Soni 8 years, 1 month ago

Acids form aqueous solutions with a sour taste, can turn blue litmus red, and react with bases and certain metals (like calcium) to form salts.

1Thank You

ANSWER

Both acids and bases change colour of all indicator

Posted by Devika Devika 8 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Gauri Kumari 8 years, 1 month ago

0Thank You

ANSWER

What is physical change

Posted by Devika Devika 8 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Gauri Kumari 8 years, 1 month ago

The change in which only property of substance change that has not different property from their elements is physical change

0Thank You

Madhuj Anand 8 years, 1 month ago

IN this change no one new substance is formed it is reversible

2Thank You

ANSWER

What is carbonisation

Posted by Harsh Prajapati 8 years, 1 month ago

CBSE > Class 07 > Science

0 answers

ANSWER

What effect of mixing acid and base

Posted by Anuj Kumar 8 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Sidhu Ck 8 years, 1 month ago

Nutrilisation

1Thank You

ANSWER

What effect by the miXing of acid and base

Posted by Anuj Kumar 8 years, 1 month ago

CBSE > Class 07 > Science

0 answers

ANSWER

Difference between Parmanent And Temporary Adaptation.

Posted by Harshit Pandey 8 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Sahdev Sharma 8 years, 1 month ago

On the basis of their nature and role in evolution, the adaptations care classified into two categories: short range (temporary) and long range (Permanent) adaptations.

Short range adaptations:

These are temporary changes
These are developed in response to temporary change in the environment
These are not inherited DNA is not changed
No role in evolution

Long term adaptations:

These are permanent changes
These are developed in response to permanent change in the environment
These are inherited
DNA is also changed
Play an important role in evolution

0Thank You

ANSWER

What is photosynthesis?

Posted by Harsh Rathva 8 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Sahdev Sharma 8 years, 1 month ago

Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which cellular respiration converts into ATP, the "fuel" used by all living things

0Thank You

ANSWER

What is

Posted by Jisa Mary Samuel 8 years, 1 month ago

CBSE > Class 07 > Science

0 answers

ANSWER

What is chlorophyll

Posted by Pritika Khandelwal 8 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Pritika Khandelwal 8 years, 1 month ago

The green pigment present on the leaves which is responsible for giving green colour too them are called chlorophyll. It helps the leaves to capture the energy of sunlight used for making photosynthesis.

1Thank You

ANSWER

See chlorophyll is not there in only in green plants some other leaves other than green leaves also have chlorophyll so why you have written that chlorophyll is only in green plants actually you are wrong? ??

Posted by Pritika Khandelwal 8 years, 1 month ago

CBSE > Class 07 > Science