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Hybridization: Hybridization is the concept of mixing atomic orbitals into new hybrid orbitals (with different energies, shapes, etc., than the component atomic orbitals) suitable for the pairing of electrons to form chemical bonds in valence bond theory. Types of Hybridization: Based on the types of orbitals involved in mixing, the hybridization can be classified as sp3, sp2, sp, sp3d, sp3d2, sp3d3.

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Khushi Parveen 4 years, 11 months ago

In plants ??

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Alex Jender 4 years, 11 months ago

Hii

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Aneesha Jat 4 years, 11 months ago

hybridization is the concept of mixing atomic orbitals into new hybrid orbitals (with different energies, shapes, etc., than the component atomic orbitals) suitable for the pairing of electrons to form chemical bonds in valence bond theory.

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Nitya Gupta 4 years, 11 months ago

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Define Cillia

Posted by Rudra Thakkar 4 years, 11 months ago

CBSE > Class 09 > Science

2 answers

Roshni Rout 4 years, 11 months ago

If you only want the defination of cilia then, Small hair like projections are called cilia.

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Parisha Rukhaya 4 years, 11 months ago

Small thread like structures present on the free surface of ciliated cuboidal & ciliated columnar cells.

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What are the properties of suspension?

Posted by Sabreen Sabreen 4 years, 11 months ago

CBSE > Class 09 > Science

5 answers

Swati ? 4 years, 11 months ago

1.Suspension is a hetrogeneous mixture. 2. Particles of suspension are visible to naked eys. 3. Diameter of particle is 100nm (1nm=10^-9m). 4. It is unstable.

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Chaudhary Vineet 4 years, 11 months ago

1.Suspension is a heterogeneous mixture 2.the partical size of suspension is more the 10^5 3.suspension show Tyndale effect 4. solute particles settle down when we left undisturbed 5. they are filter by filter paper

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Nitya Gupta 4 years, 11 months ago

1. Suspension is a heterogeneous mixture. 2. The particles of a suspension can be seen by the naked eye. 3. The particles of a suspension scatter a beam of light passing through it and make its path visible. 4. The solute particles settle down when a suspension is left undisturbed, i.e. a suspension is unstable. They can be separated from the mixture by the process of filtration. When the particles settle down, the suspension breaks and it does not scatter light anymore.

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Himanshu Gupta 4 years, 11 months ago

Xhn

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Adarsh Patil 4 years, 11 months ago

They are notstable They are heterogeneous mixture They can be seen by naked eyes

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ANSWER

What was the model of an atom proposed by Thomson

Posted by Damini Damini 4 years, 11 months ago

CBSE > Class 09 > Science

1 answers

Sawan Ahlawat 4 years, 11 months ago

The modal proposed by Thomsan showed that there is solid positive nucleus present inside the atom and except nucleus whole atom is negatively charged. He showed it by passing Alpha rays from from thin gold sheet he noticed that most of rays which were passing through the gold sheet were getting deflected with very small angle and many few were passing straight and even very very few rays were getting deflected by 180°.

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Explian why is it biffcult for a fireman to hold a house which ejects large amounts of water at a high velocity

Posted by Lisa Lisa 4 years, 11 months ago

CBSE > Class 09 > Science

1 answers

Nitya Gupta 4 years, 11 months ago

When fireman directs a large amount of water at a high velocity on fire from a hose pipe, they have to hold the hose pipe strongly because of its tendency to go backwards. The backward movement of the hose pipe is due to the backward reaction force of water rushing out through it in the forward direction at a high speed as per the Newton's third law of motion

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ANSWER

Which of the following electronic configuration is not possible. Give reason. i) A : 2,8,7 ii) B: 3,8,7

Posted by Kanmani Vedham 4 years, 11 months ago

CBSE > Class 09 > Science

5 answers

Dilpreet Malhans 4 years, 11 months ago

Lun

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Chaudhary Vineet 4 years, 11 months ago

2 is not possible because the energy lv. of k shell have to take only two electrons and in 2 option give that k shell have 3 electro we find the energy lv. by the formula of 2n^2. where n is the shell no. May it help you....

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Nitya Gupta 4 years, 11 months ago

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Aditya Singh 4 years, 11 months ago

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Tanish Jain 4 years, 11 months ago

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what is decantation

Posted by Tushar Chettri 4 years, 11 months ago

CBSE > Class 09 > Science

1 answers

Aditya Singh 4 years, 11 months ago

It is a process for the separation of mixtures of immiscible liquids or of a liquid are a solid mixture such as a suspension

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ANSWER

technique which is used to separate immiscible liquid

Posted by Tushar Chettri 4 years, 11 months ago

CBSE > Class 09 > Science

4 answers

Virat Singh 4 years, 11 months ago

Decantation

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Parisha Rukhaya 4 years, 11 months ago

Using separating funnel

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Sabreen Sabreen 4 years, 11 months ago

Decandation

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Tushar Chettri 4 years, 11 months ago

decantation

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ANSWER

name the technique which is used to separate dye from black ink.

Posted by Tushar Chettri 4 years, 11 months ago

CBSE > Class 09 > Science

5 answers

Chaudhary Vineet 4 years, 11 months ago

CHROMATOGRAPHY

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Nitya Gupta 4 years, 11 months ago

Chromatography

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Virat Singh 4 years, 11 months ago

Chromatography

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Esha Mittal 4 years, 11 months ago

chromatography

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Tushar Chettri 4 years, 11 months ago

chromatography

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ANSWER

why gravitational force is usually unnoticeable

Posted by Damini Damini 4 years, 11 months ago

CBSE > Class 09 > Science

2 answers

Nitya Gupta 4 years, 11 months ago

The gravitational force works on the mass of the body it's not an any object we can only feel it

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Himanshi Sahu 4 years, 11 months ago

The strength of gravity depends on the masses of each object and also distance between them. All objects experience an attraction toward all other objects. But earth's mass is so large it makes gravitational pull of all other objects on Earth unnoticeable.

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ANSWER

Give me some examples of greenhouse effect

Posted by Rohan Solanki 4 years, 11 months ago

CBSE > Class 09 > Science

2 answers

Virat Singh 4 years, 11 months ago

Water vapour ,carbon dioxide , chlorofluorocarbons, methane,ozone ,nitrous oxide

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Tiger ? 4 years, 11 months ago

Water vapor, Carbon dioxide, Methane, Ozone, Nitrous oxide, Chlorofluorocarbons .

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ANSWER

Give five examples of an object gets displaced in the absence of force acting on it

Posted by Arpita Nehra 4 years, 11 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

Explain the nitrogen cycle in point wise ?

Posted by Hasina Mandar 4 years, 11 months ago

CBSE > Class 09 > Science

2 answers

Nitya Gupta 4 years, 11 months ago

1. Nitrogen fixation 2. Nitrification 3. Assimilation 4. Ammonification 5. Denitrification

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Nitya Gupta 4 years, 11 months ago

Nitrogen Cycle is a biogeochemical process which transforms the inert nitrogen present in the atmosphere to a more usable form for living organisms

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ANSWER

There are two bodies having equal masses are moving with uniform speeds of v and 2v respectively . Find the ratio of their kinetic energies .

Posted by Tiger ? 4 years, 11 months ago

CBSE > Class 09 > Science

1 answers

Himanshi Sahu 4 years, 11 months ago

Hence. ratio of their kinetic energies is: k2k1=v22v12=(2v)2v2=2v2v2=41=1:4.

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ANSWER

How does evopration causes ?

Posted by Nisha Murali 4 years, 11 months ago

CBSE > Class 09 > Science

3 answers

Nitya Gupta 4 years, 11 months ago

When water gets its boiling point 100⁰C then the water started to convert into vapours

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Virat Singh 4 years, 11 months ago

Evaporation caused by heat

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Aditya Singh 4 years, 11 months ago

Heat cause evaporation

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ANSWER

What is the function of genes in an organisms

Posted by Diksha Verma 4 years, 11 months ago

CBSE > Class 09 > Science

1 answers

Nishtha Bhargava 4 years, 11 months ago

All living beings have genes. They exist throughout the body. Genes are a set of instructions that determine what the organism is like, its appearance, how it survives, and how it behaves in its environment.

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ANSWER

which of the following is not a viral deasease 1. Dengue 2.Typhoid 3.Aids 4.Influenza

Posted by Mohd_Affan_ Saifi?? 4 years, 11 months ago

CBSE > Class 09 > Science

5 answers

Nisha Murali 4 years, 11 months ago

Aids is not a viral deseases .

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Nisha Murali 4 years, 11 months ago

Influenza

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Japnidh Kaur 4 years, 11 months ago

Option A. Dengue: It is a viral disease which is caused by the bite of infected Aedes species. The person being affected the second time is at risk of developing severe disease. The symptoms include high fever headache, rash, joint pain etc, there are medications for dengue. > Option B. AIDS: It is a sexually transmitted viral disease. Acquired immune deficiency syndrome is caused by HIV - human immunodeficiency virus. The initial stages are sometimes difficult to detect as it includes flu like illness. But gradually there are large lymph nodes, welght loss etc. It is caused by any kind. of physical contact with the diseased. > Option C. Typhoid: It is a fever that spreadsthrough contaminated food or water. It is a common disease. It has symptoms like headache, stomach pain, vomiting etc. It is caused by the Salmonella species. > Option D. Influenza: It is a viral disease caused by the influenza virus. It Infects the nose, throat, lungs of the patient. It can spread when the diseased person sneezes, coughs or talks. So the answer is option C: Typhoid

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Kashvi Swaroop 4 years, 11 months ago

Aids is not a viral disease.

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Mohd_Affan_ Saifi?? 4 years, 11 months ago

plzz answer me

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ANSWER

Ques. 2) A mass of 10 kg is at a point A on a table. It is moved to a point B. If the line joining A and B is horizontal, what is the work done on the object by the gravitational force? Explain your answer.

Posted by Riya Sharma💜🤞 4 years, 11 months ago

CBSE > Class 09 > Science

5 answers

Pallavi Bharti 4 years, 11 months ago

The work done is zero as the angle between force and displacement is 90 degree

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Virat Singh 4 years, 11 months ago

The w********

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Adarsh Patil 4 years, 11 months ago

The work done by gravity is reducing the friction As we know about friction is reduce air and makes hard to push the the object therefore gravity made excellent work

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Mohd_Affan_ Saifi?? 4 years, 11 months ago

f***

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Nitesh Punera 4 years, 11 months ago

Hello

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ANSWER

Ques.1) A Certain force acting on a 20 kg mass changes its velocity from 5 ms -1 to. Calculate the work done by the force.

Posted by Riya Sharma💜🤞 4 years, 11 months ago

CBSE > Class 09 > Science

4 answers

Sagar Yadav 4 years, 11 months ago

please define this

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Chaithanya Raj 4 years, 11 months ago

100j

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Sara Tonger 4 years, 11 months ago

Work done - 100 J

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Nisha Kumari 4 years, 11 months ago

Hlo

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Duck

Posted by Shivasai Kumar 4 years, 11 months ago

CBSE > Class 09 > Science

2 answers

Virat Singh 4 years, 11 months ago

Woodburn

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Vanshika Patil 4 years, 11 months ago

I-

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ANSWER

Explain conservation of momentum with equations

Posted by Barsha Rani Sahu 4 years, 11 months ago

CBSE > Class 09 > Science

1 answers

Shivasai Kumar 4 years, 11 months ago

Aswee

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ANSWER

What is the measured by physical balance

Posted by Damini Damini 4 years, 11 months ago

CBSE > Class 09 > Science

1 answers

Shaik Heena 4 years, 11 months ago

It can be used to measure both mass and weight of an object

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ANSWER

Give the value of g with proper units

Posted by Damini Damini 4 years, 11 months ago

CBSE > Class 09 > Science

2 answers

Tanya Jha 4 years, 11 months ago

9.8 ms^2

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Prem Kumavat 4 years, 11 months ago

9.42 m s^-2

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ANSWER

What is SER? What is its function.

Posted by Abhishek Kumar 4 years, 11 months ago

CBSE > Class 09 > Science

3 answers

Vedika Kengale 4 years, 11 months ago

SER:- Smooth Endoplasmic Reticulm

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Nisha Murali 4 years, 11 months ago

SER means: smooth endoplasmic reticulm

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Änkit Kümãr 4 years, 11 months ago

SER is a membrane-bound network of tubules without surface ribosomes. SER is not involved in protein synthesis. Its main function is the synthesis of lipids, steroids, and carbohydrates, as well as the metabolism of exogenous substances, such as drugs or toxins. . ..

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MCQ 1.what is the fundamental unit of life? (a) cell (b) atom (c) molecule

Posted by Sunil Patro 4 years, 11 months ago

CBSE > Class 09 > Science

5 answers

Shalu Jain 4 years, 11 months ago

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Avaneesh ... 4 years, 11 months ago

Cell

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Jaskirat Singh 4 years, 11 months ago

"A" option is correct. Ans is -- cell

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Palak Tiwari 4 years, 11 months ago

Cell

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Suraj Kumar 4 years, 11 months ago

A is correct

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ANSWER

W̺h̺a̺t̺ i̺s̺ t̺h̺e̺ d̺i̺f̺f̺e̺r̺e̺n̺c̺e̺ b̺e̺t̺w̺e̺e̺n̺ H̺E̺A̺L̺T̺H̺Y̺ A̺N̺D̺ D̺I̺S̺EA̺S̺E̺ F̺R̺E̺E̺

Posted by Yo ???Yo 4 years, 11 months ago

CBSE > Class 09 > Science

3 answers

Yo ???Yo 4 years, 10 months ago

Mm ok thank you

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Virat Singh 4 years, 11 months ago

Hiiiii don't know

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Priyal Gupta 4 years, 11 months ago

Disease free doesn't mean healthy. Healthy mean that a person is physically, mentally and socially fit. But disease free means that a person is free from diseases .

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Plant and animal tissue

Posted by Shaik Heena 4 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Sia ? 4 years, 6 months ago

<th>S.NO.</th> <th>PLANT TISSUE</th> <th>ANIMAL TISSUE</th>

1.	There are many dead and supportive tissues in plant cells as compared to the living tissues.	In animals, there are more living tissues as compared to dead tissues.
2.	Plant tissues require very little energy for their maintenance.	Animal tissues require more energy as compared to plant tissues.
3.	There are two kinds of tissues in plants, i.e., permanent tissues and meristematic tissues.	On the other hand, there are four kinds of animal tissues, i.e., muscle tissue, epithelial tissue, connective tissue, and nervous tissue.
4.	Meristematic tissues are required for assisting plant growth. A plant grows with the help of this tissue.	Animals do not have such growth tissues, but they do have reparative growth.
5.	Plants have easier tissue organization.	The tissue organization in animals is quite complex.
6.	Plant tissues have a cell wall.	Animal tissues do not have such cell walls.
7.	Permanent tissues and Meristematic tissue are observed differently in plants.	On the other hand, there is no differentiation between the tissues.

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ANSWER

State two differences each between simple tissues of plants.

Posted by Anjali Kumari 4 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Sia ? 4 years, 6 months ago

These tissues are made up of more than one type of cells. The cells of simple tissue perform similar function. The cells of complex tissue may perform different functions. Examples of complex tissues are xylem and phloem.

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ANSWER

What produces more servers burns,boiling water or steam?

Posted by Aman Panse 4 years, 11 months ago

CBSE > Class 09 > Science