CBSE > Class 09 > Science | CBSE Board | Homework Help | myCBSEguide

No products in the cart.

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

Ask Question

IF the velocity of the body is reducing It is said to have

Posted by Dhrumal Solanki 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Dhrumal Solanki 4 years, 1 month ago

Name a lastrous non metal s

Dhrumal Solanki 4 years, 1 month ago

IF the velocity of the body is reducing it is said to have

ANSWER

Working of fractional distillation

Posted by Karanpreet Karan 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Manya Puri 4 years, 1 month ago

mixture into its component parts, or fractions. Chemical compounds are separated by heating them to a temperature at which one or more fractions of the mixture will vaporize. It uses distillation to fractionate. Generally the component parts have boiling points that differ by less than 25 °C (45 °F) from each other under a pressure of one atmosphere. If the difference in boiling points is greater than 25 °C, a simple distillation is typically used.

ANSWER

What is difference between homogeneous and hetrogeneous

Posted by Ekta Ekta 4 years, 1 month ago

CBSE > Class 09 > Science

3 answers

Pranavi Joshi 4 years, 1 month ago

Homogeneous mixture has a single phase while heterogeneous has 2 or more Homogeneous is a uniform composition while heterogeneous is a non uniform composition Sugar and water solution is an example of homogeneous mixture Salt and air Or sand and water is an example of heterogeneous mixture

Jagjeet Kaur 4 years, 1 month ago

Homogeneous is that in which both the substances can mix properly like sugar in water and heterogeneous is that in which both substances cannot mix properly like soil in water

Tanya Tanya 4 years, 1 month ago

A homogeneous mixture is a solid , liquid or gaseous mixture that has the same proportions of its components through out any given sample. Conversely, a *heterogeneous* mixture has component in which proportions vary through out the sample.

ANSWER

Science ke notes hai kya hindi ?

Posted by Aman Mishra 4 years, 1 month ago

CBSE > Class 09 > Science

0 answers

ANSWER

Function of mitrocondriya ?

Posted by Aman Mishra 4 years, 1 month ago

CBSE > Class 09 > Science

5 answers

Pranavi Joshi 4 years, 1 month ago

Mitochondria is covered by a double membrane. Outer membrane is highly porous while inner membrane has a lots of folds These folds create a large surface area for ATP {Adenosine Triphosphate (it's a molecule synthesis)}. ATP is the energy currency of cell and this process takes place in mitochondria Hence it's called as "the power house " of a cell

Tanya Tanya 4 years, 1 month ago

It is the powerhouse of cell and the functions of mitrocondriya are :- Apoptosis Mitophagy ROS production ATP supply through OXPHOS

Sriya? Ghosh 4 years, 1 month ago

Also it produces the energy currency called ATP (Adenosine Tri phosphate)

Shirish Patil 4 years, 1 month ago

Mitocondria is referred to as the powerhouses of cells, it play a vital role in the conversion of energy from food into energy.

Angad Bhati 4 years, 1 month ago

it is the power house of cell

ANSWER

Science me first term me kon kon sa chapter aayega ?

Posted by Aman Mishra 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Swayam Shah 4 years, 1 month ago

Jo tri book mein hai

ANSWER

What are polyatomic ions?????

Posted by Shreyansh Garchar 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Shirish Patil 4 years, 1 month ago

A polyatomic ion is an ion composed of more than one atom. The ammonium ion consists of one nitrogen atom and four hydrogen atoms. Together, they comprise a single ion with a 1+1+charge and a formula of NH+4NH4+. The carbonate ion consists of one carbon atom and three oxygen atoms and carries an overall charge of 2−2−. The formula of the carbonate ion is CO2−3CO32−. The atoms of a polyatomic ion are tightly bonded together and so the entire ion behaves as a single unit.

Pradeep Mehta 4 years, 1 month ago

Group of atoms in compound or in elament that gains or lose elctron depending on its nature and carry a huge charge are called polyatomic ions. Ex- magnesium chloride,Ammonium chloride,ammonium carbonate etc.

ANSWER

Differentiate between Sublimable and non Sublimable substance

Posted by Tauseef Ali 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Pradeep Mehta 4 years, 1 month ago

Sublimable substances are those substances which can be directly converted from solid to Vapour state without coming into liquid state.But those substances which cannot be converted into vapour State.For example , mixture of Ammonium Chloride and salt where ammonium chloride is sublimable substance and salt is a non sublimable substances and the mixture of Ammonium Chloride and Salt can be separated by the process of sublimation as ammonium chloride undergoes sublimation so that is converted into gas i whereas a salt is left behind the beaker

ANSWER

Please send reason and assertion for chapter tissue

Posted by Yorker King 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Nitheshraj Vs 4 years, 1 month ago

ASSERTION AND REASON Assertion: Meristematic tissues constitute the major portion of the plant body. Reason: Meristematic tissues consist of differentiated cells.

ANSWER

Convert the speed of 54km/h into m/s.1

Posted by Shahbaz Warsi 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Kritika Singh 4 years, 1 month ago

Simply multiply by 5/18 whatever no is to be converted from.km/ h to m/ s and if from m/ s to km/h then multiply by 18/5 For this particular Question Answer = 54*5/18 9*5/3 3*5 15 m/s

Yogita Ingle 4 years, 1 month ago

1 kilometer is equal to 1000 meters.
1 Hour is equal to 60 minutes.
1 minute is equal to 60 seconds.
Hence 1 hour is equal to 60*60 =36000 seconds
To convert 54 km/h into m/s
= 54 * 1000 /60 *60
=54000/3600 =540/36
=15 m/s
Hence, 54 km/h is equal to 15 m/s.

ANSWER

Which part of cell is premeable ??

Posted by Md Wazir Alam 4 years, 1 month ago

CBSE > Class 09 > Science

4 answers

Tanya Tanya 4 years, 1 month ago

Plasma membrane and cell membrane

Nitheshraj Vs 4 years, 1 month ago

Plasma membrane or cell membrane Called selectively permeable membrane because its allows the in and out of the cell and prevent some Movement of some other substances

Nitheshraj Vs 4 years, 1 month ago

Plasma membrane or cell membrane

Yogita Ingle 4 years, 1 month ago

Plasma membrane called a selectively permeable membrane because it regulates the movement of substances from within to outside of the cell. This means that the plasma membrane allows the entry of some substances while preventing the movement of some other substance.

ANSWER

Formula of first law of motion

Posted by Shiv Bahadur Yadav 4 years, 1 month ago

CBSE > Class 09 > Science

4 answers

Nitheshraj Vs 4 years, 1 month ago

V=u+at Explanation: were v =final velocity

Yogita Ingle 4 years, 1 month ago

Newton’s first law states that "a body remains in the state of rest or uniform motion in a straight line unless and until an external force acts on it."

Sarita Panda 4 years, 1 month ago

Ft=m(v-u)

*Suhana * 4 years, 1 month ago

P= mv P is the momentum, m is the mass and v is the velocity of the object.

ANSWER

What is difference between mass and weight. Write five points each.

Posted by Pradeep Mehta 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 4 years, 1 month ago

Sl. No.	Differentiating Property	Mass	Weight
1	Definition	Mass is simply the measure of the amount of matter in a body.	Weight is the measure of the amount of force acting on a mass due to acceleration due to gravity.
2	Denotation	Mass is denoted by “M”.	Weight is denoted by “W”.
3	Formula	Mass is always constant for a body and there are several formulas to calculate mass. One way to calculate mass is: Mass = volume × density	Weight is the measure of the gravitational force acting on a body. Weight can be calculated from the following formula: Weight = mass × acceleration due to gravity
4	Quantity Type	Mass is a base quantity. Mass only has magnitude and so, it is a scalar quantity.	Weight is a derived quantity. Weight has both magnitude and direction (towards the centre of gravity) and so, it is a vector quantity.
5	Unit of Measurement	The SI unit of mass is Kilogram (Kg).	The SI unit of weight is Newton (N).

ANSWER

What is the nature of the distance time graph for uniforms motion of an object

Posted by Megha Kulagod 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 4 years, 1 month ago

Answer:

(i) For uniform motion of an object, its distance-time graph is a straight line with constant slope. (ii) For non-uniform motion of an object, its distance-time graph is a curved line with increasing or decreasing slope.

ANSWER

All work

Posted by Anjali Saini 4 years, 1 month ago

CBSE > Class 09 > Science

0 answers

ANSWER

Gaurav Seth can u tell me how u post the table in the answer in this app pls.

Posted by Ash Greninja 4 years, 1 month ago

CBSE > Class 09 > Science

3 answers

Ash Greninja 4 years, 1 month ago

I use this app in phone. Can u tell me how can I use it in phone pls

Ash Greninja 4 years, 1 month ago

U give answers in the computer

Gaurav Seth 4 years, 1 month ago

There is an tool available in the text editor tool .

see the option available in the editor.

there will be an option with a table pic . you ll get it

ANSWER

What is solubility of solute

Posted by Lokasree D 4 years, 1 month ago

CBSE > Class 09 > Science

3 answers

Pranavi Joshi 4 years, 1 month ago

The ability ,the capacity of a solute(substance to be dissolved)to dissolve in solvent(the substance in which it has to be dissolved)is called the solubility of solute

Nitheshraj Vs 4 years, 1 month ago

Solubility is a property referring to the ability for a given substance, the solute, to dissolve in a solvent. It is measured in terms of the maximum amount of solute dissolved in a solvent at equilibrium. The species that dissolves, the solute, can be a gas, another liquid, or a solid. ...

Ash Greninja 4 years, 1 month ago

Solubility is a property referring to the ability for a given substance, the solute, to dissolve in a solvent. It is measured in terms of the maximum amount of solute dissolved in a solvent

ANSWER

What are differences between aqueous ana non aqueous

Posted by Lokasree D 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

*Suhana * 4 years, 1 month ago

Aqueous solution is a solution in which water is solvent like NaCi solution. But Non aqueous solution is a solution in which water is not the solvent.

ANSWER

What are the equations for laws of motion. All the equation in easy format with examples.

Posted by Kajal Sharma 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Gaurav Seth 4 years, 1 month ago

There are three equations of motion for bodies travelling with uniform acceleration. These are explained below:

1. First Equation of Motion:

(Velocity-Time Relation)

v = u +at

Where, v = Final velocity of body

u = Initial velocity of body

a = Acceleration

And t = Time

2. Second Equation of Motion:

(Position-Time Relation)

3. Third Equation of Motion:

Gaurav Seth 4 years, 1 month ago

Newton's First Law of Motion: Any object remains in the state of rest or in uniform motion along a straight line, until it is compelled to change the state by applying external force.
Newton's Second Law of Motion: The rate of change of momentum is directly proportional to the force applied in the direction of force.
Newton's Third Law of Motion: There is an equal and opposite reaction for evrey action

ANSWER

The largest cell in the male is....

Posted by Vanshaj Thakur. 4 years, 1 month ago

CBSE > Class 09 > Science

4 answers

Lokesh Yadav 4 years, 1 month ago

Neuron cell is longest cell in human body, but SPERM CELL is largest cell in male's body. I think you understand...

Divya Gupta 4 years, 1 month ago

Motor neuron

Kajal Sharma 4 years, 1 month ago

Motor Neuron

Pata Monalisha 4 years, 1 month ago

Neuron

ANSWER

Difference between mitosis and meiosis.

Posted by Pata Monalisha 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 4 years, 1 month ago

Mitosis	Meiosis
1) This division takes place in somatic cells and as a result of this division growth occurs.	1) This takes place usually in reproductive cells and as a result of this character one generation pass into the other.
2) Completed in one stage.	2) Completed in two stages.
3) Prophase is smaller (as compared to prophase of Meiosis).	3) Prophase longer than prophase of mitosis and divided into five substages.
4) No crossing over takes place.	4) Crossing over takes place in which exchange of segments of chromatids occurs.
5) Synapsis does not take place at metaphase.	5) Synapsis between homologous chromosomes takes place (bivalent stage).
6) At metaphase, centromere is towards equatorial plate and ends of chromosomes towards poles. Centromere divides.	6) At metaphase I, the centromere is towards poles and ends of chromosomes towards equatorial plate. Centromere does not divide.
7) Chromatids are long and thin.	7) Chromatids are shorter and thick
8) Cytokinesis follows karyokinesis.	8) After Telophase I, cytokinesis does not takes place always (may occur).

ANSWER

Human eye is how many pixel? A. 576 B. 487 C. 987

Posted by Vanshaj Thakur. 4 years, 1 month ago

CBSE > Class 09 > Science

5 answers

Nidhika Khiani 4 years, 1 month ago

576 MEGAPIXELS

Lav Khator 4 years, 1 month ago

576 megapixels

Divya Gupta 4 years, 1 month ago

576 megapixels

Gaurav Seth 4 years, 1 month ago

576 Megapixels

The Resolution Of The Human Eye Is 576 Megapixels. The average human retina has five million cone receptors on it. Since the cones are responsible for colour vision, you might suppose that this equates to a five megapixel equivilant for the human eye.

Ash Greninja 4 years, 1 month ago

576 pixels

ANSWER

May get chart of animal tissue

Posted by Pragati Jagtap 4 years, 1 month ago

CBSE > Class 09 > Science

4 answers

Kajal Sharma 4 years, 1 month ago

https://drive.google.com/file/d/1bpOTfrT4ppjM26tLgdFLfukf5ZL8gKZO/view?usp=drivesdk

Ash Greninja 4 years, 1 month ago

Open it with chrome.

Ash Greninja 4 years, 1 month ago

Click on the below link to get the flow chart.

Ash Greninja 4 years, 1 month ago

https://drive.google.com/file/d/1bpOTfrT4ppjM26tLgdFLfukf5ZL8gKZO/view?usp=drivesdk

ANSWER

What is weeds?give two examples

Posted by Minakhsi Gathanina 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Yogita Ingle 4 years, 1 month ago

The unwanted plants that grow by their own in the cultivating fields and compete with required crops for food, light, space and essential nutrients present in the soil are called weeds.

For example, Parthenium (gajar ghas), Cyperinus rotundus (motha).

Ash Greninja 4 years, 1 month ago

Weeds are the unwanted plants grow alongside with the crops. They take up the nutrients and reduce the growth of the crops. For example: dandelion, clover, purslane etc.

ANSWER

Explain the Mole Concept?

Posted by Vansh Singh 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Ash Greninja 4 years, 1 month ago

The mole is an amount unit similar to familiar units like pair, dozen, gross, etc. It provides a specific measure of the number of atoms or molecules in a bulk sample of matter. A mole is defined as the amount of substance containing the same number of discrete entities (atoms, molecules, ions, etc.)

ANSWER

I a boy runs in a circular path of 20 km circumference and comes back to the same point through which he has started find the displacement of the boy ??

Posted by Lakshay Arora 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Prag Rawat 4 years, 1 month ago

Answer is0

Shrutee Kumari 4 years, 1 month ago

Displacement - 0. Since the body comes back to the origin.

ANSWER

Function of golgi apparatus ?

Posted by Aman Mishra 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Pata Monalisha 4 years, 1 month ago

Golgi apparatus is attached to ER(endoplasmic reticulum) .It collects simple molecule from ER and convert them into complex molecules. These are then packaged in small vesicles and stored and transported to inside and outside of cell. Golgi apparatus also involved in the formation of lysosomes. If there was no Golgi apparatus no lysosomes were formed and the foreign materials like bacteria could easily invade and destroy the cell. Hope it's helpful for you........

ANSWER

State whether the following statements are true of false 1 collenchyma of cells are dead andhave irregular thickenings at the corners.............. 2 phloem helps in conduction of water upwards............3 intercalary meristem is located at the base of internodeses.............. 4 cambium has the apical meristem................. 5 skin epithelium is called stratified squamous epithelium ........ 6 adipose tissue prevents the loss of heat from the body....... 7 our tongue contains striated muscle fibres

Posted by Deepanjali0108 Avika 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Prag Rawat 4 years, 1 month ago

123467 false

ANSWER

What is chlor-alkali

Posted by Suman Anand 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Meghna Thapar 4 years, 1 month ago

The term chlor-alkali refers to the two chemicals (chlorine and an alkali) which are simultaneously produced as a result of the electrolysis of a saltwater. The most common chlor-alkali chemicals are chlorine and sodium hydroxide (caustic soda) but can include potassium hydroxide and muriatic acid. The chlor-alkali industry uses brine (salt water) to produce chlorine, sodium hydroxide (NaOH or caustic soda), and hydrogen. An electric current is passed through the brine, to form hydrogen gas at the negative electrode and chlorine gas at the positive electrode, leaving a solution of sodium hydroxide.

ANSWER

What is gravitation.

Posted by Tarun Kumar Singh 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Vanshaj Thakur. 4 years, 1 month ago

The fore of attraction between two objects depending on their masses is called gravitation.Earth attract us by the force of gravitation called gravitational force

Pradeep Mehta 4 years, 1 month ago

The fore of attraction between two objects depending on their masses is called gravitation.Earth attract us by the force of gravitation called gravitational force

ANSWER

Page 190 of 1371

myCBSEguide App

myCBSEguide

Trusted by 1 Crore+ Students

Test Generator

Test Generator

Create papers online. It's FREE.

CUET Mock Tests

CUET Mock Tests

75,000+ questions to practice only on myCBSEguide app

Google Play

Download myCBSEguide App