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What is sericulture

Posted by Raj Rani 4 years, 4 months ago

CBSE > Class 09 > Science

5 answers

Sia ? 4 years, 4 months ago

Sericulture, or silk farming, is the cultivation of silkworms to produce silk. Although there are several commercial species of silkworms, Bombyx mori is the most widely used and intensively studied silkworm. Silk was believed to have first been produced in China as early as the Neolithic Period.

? Akanksha Dhaka ? 4 years, 4 months ago

The process of cultivating silkworms and extracting silk from them

Shivam Singh 4 years, 4 months ago

the production of silk and the rearing of silkworms for this purpose

Kuldeep Pandey 4 years, 4 months ago

Good

Divyanshi Jadon 4 years, 4 months ago

But ye questions to class 7th ka hai

ANSWER

Hey anyone there??

Posted by Gauri Nehe 4 years, 4 months ago

CBSE > Class 09 > Science

4 answers

? Akanksha Dhaka ? 4 years, 4 months ago

No

Gauri Nehe 4 years, 4 months ago

Hi ishu

Shivam Singh 4 years, 4 months ago

No

Ishu Choudhary 4 years, 4 months ago

Yes

ANSWER

diffrents between prokoryotic and eukroyotic

Posted by Mahi Bhatiya 4 years, 4 months ago

CBSE > Class 09 > Science

2 answers

Shivam Singh 4 years, 4 months ago

The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. The nucleus is where eukaryotes store their genetic information. ... Prokaryotes, on the other hand, have no membrane-bound organelles

Pra Jit 4 years, 4 months ago

Prokaryotic cells- they are not membrane bound, they don't have a well defined nucleus, EUKARIOTIC CELLS are membrane bound, they have a well defined nucleus.

ANSWER

What is plastide

Posted by Kunal Jangra 4 years, 4 months ago

CBSE > Class 09 > Science

2 answers

Shivam Singh 4 years, 4 months ago

any of a class of small organelles in the cytoplasm of plant cells, containing pigment or food.

Pra Jit 4 years, 4 months ago

It is one of the membrane bound cell organell, and they are present in plants.

ANSWER

Which among the following is/are flour+water, sand+water, salt+water, turmirc+water

Posted by Owais Malik 4 years, 4 months ago

CBSE > Class 09 > Science

2 answers

Chaithanya Kumar 8Th Class 4 years, 3 months ago

Flour + water gives colloidal solution Sand + water gives suspension Salt + water gives true solution Turmeric + water gives suspension

Neil :) 4 years, 4 months ago

What???

ANSWER

123

Posted by Neil :) 4 years, 4 months ago

CBSE > Class 09 > Science

4 answers

? Akanksha Dhaka ? 4 years, 4 months ago

Incomplete ❓ question

Tanya Maurya 4 years, 4 months ago

123

Neil :) 4 years, 4 months ago

1+2+3

Sia ? 4 years, 4 months ago

Please ask question with complete information.

ANSWER

What is speed and velocity give an example

Posted by Debarchana Mandal 4 years, 4 months ago

CBSE > Class 09 > Science

3 answers

Sia ? 4 years, 4 months ago

Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement. For example, 50 km/hr (31 mph) describes the speed at which a car is traveling along a road, while 50 km/hr west describes the velocity at which it is traveling.

Shrishti Rathore 4 years, 3 months ago

Speed - The distance covered by a body per unit time is called speed . Speed is a scalar quantity. It is always positive. The S.I. unit of speed is metre(m). Velocity - The displacement travelled by a body per unit time is called velocity. Velocity is a vector quantity. It may be positive, negative or zero. The S.I. unit of velocity is metre (m).

Pra Jit 4 years, 4 months ago

SPEED is distance/time and VELOCITY is displacement/time

ANSWER

Degine compound.

Posted by Shakil Mew 4 years, 4 months ago

CBSE > Class 09 > Science

2 answers

Shrishti Rathore 4 years, 3 months ago

Compound are the pure substances which are made of same kind of elements combined together in a fixed ratio or proportion in terms of mass, volume and weight. Example - CO2(carbon dioxide),H2O ( water),etc.

Pra Jit 4 years, 4 months ago

Two or more elements combained together is called a compound (Eg: H2O, CO2)

ANSWER

Deffrence between mixture and Compound

Posted by Shubham Kumar 4 years, 4 months ago

CBSE > Class 09 > Science

2 answers

Shrishti Rathore 4 years, 3 months ago

Compound are the pure substances which are made up of same kind of elements combined together in a fixed ratio or proportion in terms of mass,volume,weight . Mixtures are the substances which are obtained from mixing two or more substances.

Pra Jit 4 years, 4 months ago

Compound consists of two or more elements (elements are pure substances) and Mixture consists of many substances.

ANSWER

Why mixture is differ from compound??

Posted by Mankirat Singh 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Pra Jit 4 years, 4 months ago

Compound is made up of two or more elements (eg for compound is H2O)and elements were pure substance and mixture is made up of many components (Eg for mixture is air)

ANSWER

A boy is running along a circular path. Whose radius is 56 metre. If he completes one round in 40 second. Then find his displacement and distance after 140 second.

Posted by Mankirat Singh 4 years, 4 months ago

CBSE > Class 09 > Science

2 answers

Chaithanya Kumar 8Th Class 4 years, 3 months ago

Distance = 3×Circumference + Circumference/2 =3 ×352 + 352/2 =1056 + 176 =1232m.

Chaithanya Kumar 8Th Class 4 years, 3 months ago

Displacement=diameter of circular path =56×2 =112m

ANSWER

Plz help me to make notes of ch 8

Posted by Rakshita Chawla 4 years, 4 months ago

CBSE > Class 09 > Science

2 answers

Sia ? 4 years, 4 months ago

<a href="https://mycbseguide.com/dashboard/content/567">https://mycbseguide.com/dashboard/content/567</a>

Sia ? 4 years, 4 months ago

Please ask question with complete information.

ANSWER

A body moves 200 in a straight line and returns back in the same part 85 find the distance and displacement

Posted by Jagrati Bhadauria 4 years, 4 months ago

CBSE > Class 09 > Science

2 answers

Pra Jit 4 years, 4 months ago

Distance =200+85=285 , and displacement=200-85=115, Note: Distance is the value that how far an object is moved so we have to add all the values given that the object moved and DISPLACEMENT is the shortest distance and it is from the starting point to the end point(a strait line).

ᴘʀᴀɴᴊᴀʟ ᴍɪsʜʀᴀ 4 years, 4 months ago

115 Dɪsᴘʟᴀᴄᴇᴍᴇɴᴛ

ANSWER

a bus decreases its speed from 80 kilometre per hour to 60 km per hour in 5 second find the acceleration of the bus ?

Posted by Poonam Chouhan 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Poonam Chouhan 4 years, 4 months ago

Initial speed u=80 km/h=80×185=22.22 m/s Final speed v=60 km/h=60×185=16.67 m/s Using v=u+at Or 16.67=22.22+a×5 ⟹ a=−1.1 m/s2

ANSWER

What is particle?

Posted by Mankirat Singh 4 years, 4 months ago

CBSE > Class 09 > Science

3 answers

Pra Jit 4 years, 4 months ago

An atom?

Poonam Chouhan 4 years, 4 months ago

a relatively small or the smallest discrete portion or amount of something

Samrat Jaiswal 4 years, 4 months ago

Particle is a very small substance

ANSWER

what happens when a mixture of iron and sulphur is heated. write the equation involved. in this reaction physical or chemical change.

Posted by Ananya Chauhan 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Manju Tripathi 4 years, 4 months ago

Chemical change

ANSWER

Is cooking a chemical reaction? Which reactions are involved?

Posted by Anushka D 4 years, 1 month ago

CBSE > Class 09 > Science

4 answers

Mankirat Singh 4 years, 4 months ago

Yes, cooking is a chemical reaction because After cooking, the raw materials or vegetables are not became recovee again.

Dhaval Sirvi 4 years, 4 months ago

Bosadk

Ibadur Rahman Laskar 4 years, 4 months ago

Yes it is a chemical reaction

Anushka D 4 years, 4 months ago

I mean which type of chemical reactions are involved

ANSWER

Make project on "To study the time required in boiling 100ml of duffernent liquids"

Posted by Vani Gupta 4 years, 4 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

What will happen when you apply centrifugal force? Give some applications also.

Posted by Bhupendra Singh 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Chaithanya Kumar 8Th Class 4 years, 3 months ago

Centrifuge:It is a device which is used to seperate the tiny components in a colloidal solution with the help of "centrifugal force"

ANSWER

Define crystallisation

Posted by Nikita Swami 4 years, 4 months ago

CBSE > Class 09 > Science

5 answers

Pra Jit 4 years, 4 months ago

Crystallization is a process in which the sender particles are forced to settle down and the lighter particles stay in the top when SPUN(SPINNED) RAPIDLY.

Dhaval Sirvi 4 years, 4 months ago

Madrochad

Jashan Duhan 4 years, 4 months ago

crystallization

Sanket ... 4 years, 4 months ago

Crystallization or crystallisation is the process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal. Some of the ways by which crystals form are precipitating from a solution, freezing, or more rarely deposition directly from a gas.

Sanket ... 4 years, 4 months ago

Hello

ANSWER

How to make 3d model of states of matter

Posted by Dipu Mangela 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Pra Jit 4 years, 4 months ago

For SOLID we can use anything like the cardboard, steel, hard, soft substances etc and for Liquids we can use simple water without any effects , and for GAS we can use a balloon filled with water or even the surrounded air.

ANSWER

Explain the process of osmosis through an example

Posted by Shivendra Pratap Singh 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Pra Jit 4 years, 4 months ago

Osmosis is a process in which the water molecules move from a region of higher water concentration to a region of lower water concentration through a SEMIPREMIABLE MEMBRANE in and out of the cells to make the outer and inner water concentration EQUAL.

ANSWER

What lignin in the sclarenchyma tissue

Posted by Soumyashree Pasodi 4 years, 4 months ago

CBSE > Class 09 > Science

2 answers

Sia ? 4 years, 4 months ago

Sclerenchyma tissue, when mature, is composed of dead cells that have heavily thickened walls containing lignin and a high cellulose content (60%–80%), and serves the function of providing structural support in plants. Sclerenchyma cells possess two types of cell walls: primary and secondary walls.

Pra Jit 4 years, 4 months ago

Lignin is a substance present in the cell wall and yes by mentioning cell wall is is present in plants this lignin contains of dead cells and gives strength to the plant because they have thickend walls with no intercellular spaces.

ANSWER

Why do we separate the componts of a mixture

Posted by Anish Krishna 4 years, 4 months ago

CBSE > Class 09 > Science

2 answers

Pra Jit 4 years, 4 months ago

We separate mixture to use it as a pure substance like for example we use the separating funnel to separate oil and water to use them.

Sanket ... 4 years, 4 months ago

Hi

ANSWER

What Is Difference Between Meristematic And Permanent Tissue ?

Posted by Aranyo Mukherjee 4 years, 4 months ago

CBSE > Class 09 > Science

2 answers

Pra Jit 4 years, 4 months ago

Meristematic tissues are tissues which keep on dividing, they don't have a definite shape and they are present in plants , permenant tissues will not divide , have a definite shape.

Sumbul Emran 4 years, 4 months ago

The tissue having the capicity of division is called a Meristematic Tissue When a tissue looses the capacity of division then it becomes permanent tissue Meristematic Tissue are of 3 types: Apical, Intercalary and lateral Permanent Tissues are of 2 types: Simple Permanent and Complex permanent

ANSWER

Sikkim culture

Posted by Ak Gupta 4 years, 4 months ago

CBSE > Class 09 > Science

3 answers

Sanket ... 4 years, 4 months ago

Hi

Akshiii ?? 4 years, 4 months ago

Hii

Neil :) 4 years, 4 months ago

Hii

ANSWER

Hello sir, I want to ask doubt related to syllabus of science. Please write chapter name that are in syllabus and send me in reply

Posted by Aashay Jain 4 years, 4 months ago

CBSE > Class 09 > Science

2 answers

Swini Srivastava 4 years, 4 months ago

And motion

Swini Srivastava 4 years, 4 months ago

Is matter around us pure Fundamental units of life

ANSWER

Derive the converserion of momentum equation

Posted by .......... .......... 4 years, 4 months ago

CBSE > Class 09 > Science

2 answers

Neil :) 4 years, 4 months ago

Hii

Shivam Yadav 4 years, 4 months ago

G6

ANSWER

A bus decrease its speed from 80Km h-1 to 60km h-1in 5 second.Find the acceleration of the bus

Posted by Muskan Yadav 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Aman Priyadarshi 4 years, 4 months ago

The acceleration of the is -1.12m/s²

ANSWER

What is meant by Harvesian Canal?

Posted by Anant Agarwal 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Sia ? 4 years, 4 months ago

Haversian canals are microscopic tubes or tunnels in cortical bone that house nerve fibers and a few capillaries. This allows bone to get oxygen and nutrition without being highly vascular. These canals also communicate with bone cells using special connections, or canaliculi.

ANSWER

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