CBSE > Class 10 > Science | CBSE Board | Homework Help

Salivary glands secrete salivary amylase, which begins the chemical breakdown of carbohydrates by breaking the bonds between monomeric sugar units.So,the digestion of carbohydrate does not occur in stomach. ( hope it will be helpful)

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How food is transported in plant? (3 marks)

Posted by Mishti Roy 4 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Md Aftab Alam 4 years, 2 months ago

Food is transported in plants by xylem and pheloem.

0Thank You

Mallikarjun D M 4 years, 2 months ago

Food is travels in plants through xylem and phloem where xylem tissue carry the water form the roots to all parts of the plane and phloem carry the food molecules form leaves to all the parts of the plant body

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Money Singh 4 years, 2 months ago

Food is transported in plants through xylem and pheloem

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ANSWER

C6 h12 o6 called

Posted by Krishana Nagpal 4 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Anjali Shakya 4 years, 2 months ago

Glucose

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Divanjyoti Deka 4 years, 2 months ago

Glucose

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Sakshi Yadav 4 years, 2 months ago

Glucose

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Vedant Surve 4 years, 2 months ago

Food

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Vedant Surve 4 years, 2 months ago

Fopd

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ANSWER

Balance and identify equation as described above and on a separate sheet of paper, write the word equation for each. 1. _ Fe+ _02- _ Fe3 o4

Posted by Akshay Sharma 4 years, 2 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Will the current flows more easily through thick wire or thin wire. Give reason?

Posted by A Bharath 4 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Suryansh. Dubey 4 years, 2 months ago

Current flows more easily through the thick wire because in a thick wire the electrons get more space to flow and they will not hit more atoms nd the resistance will be less as compared to thin wire.Also resistance is inversely proportional to area of cross section,if area will increase then the resistance will decrease.

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Anshika Sharma 4 years, 2 months ago

In thick wire , because resistance is inversely proportional to area of cross section, or agar resistance kam hoga to current jada flow karega , because resistance is inversely proportional to current ?

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A Bharath 4 years, 2 months ago

The current will flow more easily through the thick wire than the thin wire. It is because the resistance of a conductor is inversely proportional to its area of cross-section. If the thicker the wire, the less is resistance and hence more easily the current flows.

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ANSWER

What do you mean by indicators

Posted by Mallaiah Mallaiah 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Tejashvi Patel 4 years, 2 months ago

Indicators are substances whose solutions change color due to change in pH level, to indicate whether it is acid or base

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@Mrittika.Sarmah_50 . 4 years, 2 months ago

Indicators are substances whose solutions change color due to changes in pH. ... ( hope it will be helpful)

2Thank You

ANSWER

To determine the focal length of (a) concave mirror, (b) concave lens By obtaining the image of the distant object

Posted by Kiron Maharana 4 years, 2 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

All important points in chapter 2

Posted by Ankur Pandey 4 years, 2 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Why does sea water contains salt not river waters?

Posted by Anshu Raj 4 years, 2 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Why we feel muscle pain after a Vigoures exercise

Posted by Asiya? Shanavas 4 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Shagun Chauhan 4 years, 2 months ago

We feel muscle pain after a vigorous exercise because while doing vigorous exercise we respire faster but the oxygen don't reach muscle at time ,therefore the lack of oxygen occur in muscles which makes the cell of muscle to do anaerobic respiration. The by - product of anaerobic respiration that is lactic acid get accumulated within muscle causing muscle pain or cramps.

2Thank You

Anshika Sharma 4 years, 2 months ago

Because of formation of lactic acid

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Aishwarya Vatsal 4 years, 2 months ago

Because of anaerobic respiration.

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ANSWER

How respiration differ from breathing? (3 mark) plz answer it soon..

Posted by @Mrittika.Sarmah_50 . 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Anshika Sharma 4 years, 2 months ago

Breathing is external process and extracellular and occur only to limited body parts ,no energy is released where respiration is internal and intracellular process and occur in each and every cell of our body , it releases energy

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Hitaishi Dhakse✌✌ 4 years, 2 months ago

RESPIRATION - It is the process by which food is oxidized to release energy. For this O^2 is required from outside of the body to breakdown the food. BREATHING - It is the process of taking in required gas(inhalation) and giving out unrequired gases(exhalation)

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A dentist mirror has c of 3cm. How far must it be placed from a small dental cavity to give a virtual image of the cavity that is magnifies 5 times

Posted by Janvi Falor 4 years, 2 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

How does respiration occur in the plant

Posted by Rana Ji Games 4 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Preeti Dabral 4 years, 2 months ago

The process of respiration in plants involves using the sugars produced during photosynthesis plus oxygen to produce energy for plant growth. In many ways, respiration is the opposite of photosynthesis. As with photosynthesis, plants get oxygen from the air through the stomata.

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Anshika Sharma 4 years, 2 months ago

By stomata , by diffusion process and also from lenticles

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Prachi Jindal 4 years, 2 months ago

By stomata

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ANSWER

What is a areobic respiration

Posted by Anurag Solanki 4 years, 2 months ago

CBSE > Class 10 > Science

4 answers

Anshika Sharma 4 years, 2 months ago

Respiration in which oxygen is required

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Hina Yasmeen 4 years, 2 months ago

Aerobic respiration is a chemical reaction that transfer energy to cell.In this respiration oxygen is required

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Jasleen Gill 4 years, 2 months ago

Type of respiration which takes place in the presence of Oxygen is known as Aerobic Respiration.

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Anurag Solanki 4 years, 2 months ago

Please tell me answer

3Thank You

ANSWER

What is plaster of paris? How is it obtained from gypsum?

Posted by Harsh Singh 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Preeti Dabral 4 years, 2 months ago

Plaster of Paris is obtained by heating gypsum or calcium sulphate dihydrate to about 140-180 degree Celsius. When heated to such a temperature, gypsum forms Plaster of Paris. The name is derived from the large deposits of gypsum in the Montmartre hill in Paris.

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Anshika Sharma 4 years, 2 months ago

Plaster of paris is calcium sulphate dihydrate it is obtain when we heated gypsum

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ANSWER

Can anyone help me in nutrition flow chart of the lesson life process

Posted by Tanushree Prabhu 4 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Hitaishi Dhakse✌✌ 4 years, 2 months ago

NUTRITION Mode of nutrition --- On the basis of sources of energy 1. Photosynthesis autographs 2.Chemsynthedis autographs Then PHOTOSYNTHESIS Then INTERNAL STRUCTURE OF LEAF 1.Epidermis 2.Stomata 3.Gaurd cells Then CHLOROPLASTS Then EVENTS OF PHOTOSYNTHESIS 1. Absorption 2.Conversion 3.Reduction Then CONDITIONS NECESSARY FOR PHOTOSYNTHESIS 1. Sunlight 2. Chlorophyll Then RAW MATERIALS REQUIRED BY PHOTOSYNTHESIS 1. Oxygen 2. Water 3. Other materials Then SIGNIFICANCE OF PHOTOSYNTHESIS 1. Food 2. Oxygen Then HETEROTROPHIC NUTRITION 1. Holozoic nutrition 2. Saprophytic nutrition 3. Parasitic nutrition Then NUTRITION IN AMOEBA 1. Ingestion 2. Digestion 3. Absorption 4. Assimilation 5. Egestion Then NUTRITION IN HUMAN BEINGS HOPE ITS HELPFUL ??

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Differences between convex and concave mirrors

Posted by Harsh Kushwah 4 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Preeti Dabral 4 years, 2 months ago

1	Meaning and Other Names	Concave means rounded or hollowed like the interior of a circle or sphere Also called as a converging mirror.	Convex means rounded or curved like the exterior of a circle or sphere. Also called as a fish eye or diverging mirror.
2	Mirror Shape
3	Structure	The mirror coating of the concave mirror is on the outside of the spherical surface. In concave mirrors, the centre of curvature and the reflecting surface fall on the same side of the mirror.	The mirror coating of the convex mirror is on the inside of the spherical surface. In convex mirrors, the centre of curvature and the reflecting surface fall on the opposite side of the mirror.
4	Position of the Focus	Focus lies in front of the mirror i.e. focal length, is positive.	The focus lies behind the mirror i.e. focal length is negative.
5	Image Properties	The image formed by a concave mirror is real, inverted and enlarged (except when the object is between P and F where the image is virtual, erect and enlarged).	The image formed by a convex mirror is virtual, erect and diminished.
6	Image Projection	An image can be projected on a screen as they are real.	Image cannot be projected on a screen as they are virtual.
7	Usage	They are used in reflecting telescopes, shaving mirrors, torchlights, etc. as they give a magnified image of the objects.	Convex mirrors are used as side view or rearview mirrors in vehicles as they cover a wider area of view.

2Thank You

Harapriya Tarasia 4 years, 2 months ago

CONCAVE MIRROR Spherical mirror whose inner side is reflecting are called concave mirror CONVEX MIRROR Spherical mirror whose outer side is reflecting are called convex mirror

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Mishti Roy 4 years, 2 months ago

Concave mirror- It is kind of spherical mirror whose reflected surface is curved inwards. Eg- headlights, solar cooker, shaving mirror. Convex mirror- It is kind of spherical mirror whose reflected surface is curved outwards Eg- dentist mirror, security mirror, rear view mirror etc.

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Armaan Armaan 4 years, 2 months ago

And in convex mirror the light reflects inside its surface. ?

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Armaan Armaan 4 years, 2 months ago

In concave mirrors the light reflects on its outersurface. ?

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ANSWER

red litmus solution?

Posted by Krish Gandhi 4 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Armaan Armaan 4 years, 2 months ago

In red litmus solution the red colour change into blue colour. It is used in acid. ?

1Thank You

ANSWER

Balance the chemical equation: Na+ H2O ----> NaOH +H2 with alphabetical method

Posted by Santosh Meena 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Muskan Kumari 4 years, 2 months ago

2Na+2H2O----->2NaOH+H2

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Harsh Kushwah 4 years, 2 months ago

2Na+2H2O--->2NaOH+H2

1Thank You

ANSWER

Assertion :brown fumes of Nitrogen dioxide are produced when Lead Nitrate is heated. Reason : Nitrogen dioxide gas is produced as a byproduct due to thermal decomposition of Lead Nitrate . which is the correct answer from the options

Posted by Shreya Mittal 4 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Preeti Dabral 4 years, 2 months ago

Assertion : Brown fumes are produced when lead nitrate is heated.

This is true.

When lead nitrate is heated strongly, NO₂ and O_²are given out.

In this decomposition reaction, the colourless compound lead nitrate forms a yellow compound, lead monoxide, and brown fumes of nitrogen dioxide gas are evolved.

Reason: Nitrogen dioxide is produced as a by product due to the decomposition of lead nitrate.

This is true.

2 Pb(NO₃)2 → 2 PbO + 4 NO₂ + O₂

Both Assertion and Reason are correct and Reason explains the assertion.

Option A is correct.

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ANSWER

The cost of production of electricity in thermal power station in bihar is lesser than gujrat.prove this statement by giving reasons

Posted by Manish Lokesh 4 years, 2 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

What is cureent

Posted by Ashish Kaushik 4 years, 3 months ago

CBSE > Class 10 > Science

3 answers

@Mrittika.Sarmah_50 . 4 years, 2 months ago

Current is the rate at which electrons flow past a point in a complete electrical circuit. ( hope it will be helpful)

1Thank You

Armaan Armaan 4 years, 2 months ago

The flow of charges is called current. ?

1Thank You

Sarita Panda 4 years, 2 months ago

The rate of flow of electrons is know as current. It means the the total number of electrons flown through a particular cross section are in a unit time.

3Thank You

ANSWER

Diagram of circulatory system

Posted by Jasmine Kaur 4 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Preeti Dabral 4 years, 2 months ago

0Thank You

ANSWER

Why concave mirror used as a light collector in satellites?Explain

Posted by Komal Yadav 4 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Preeti Dabral 4 years, 3 months ago

The concave mirror in a reflecting mirror collects the light from distant celestial objects. Since the light sources are very far away, the incoming light rays are effectively parallel. The concave mirror focuses the light rays on a flat mirror, kept at its focal distance.

2Thank You

ANSWER

Palisade and spongy parenchyma together called_______

Posted by Mitali Chavda 4 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Mitali Chavda 4 years, 3 months ago

Mesophyll

2Thank You

ANSWER

Distinguished between open unemployment and disguised unemployment

Posted by Nidhi Turkar 4 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Preeti Dabral 4 years, 3 months ago

Open Unemployment	Disguised unemployment
Open employment refers to the situation in which an individual has no job and unable to earn his livelihood.	Disguised unemployment refers to the situation in which people work at a place where there is no more people are required. The situation in which people are apparently working but all of them are made to work less than their potential.
This unemployment is clearly visible. Open unemployment is the unemployment which is visible and seen that some people who want to work but do not have the work.	This unemployment is hidden. Under this, the worker is working, but if he is removed, the production does not fall.
People's unemployment will affect the production of goods and services in an economy.	People's unemployment won't affect the production of goods and services because here already more than the requirement of people are working so if they leave that's not a big deal.
Open unemployment exists among the educated unemployed. Generally, this type of unemployment can be seen in urban areas.	Disguised unemployment is mostly found in Primary sectors because of the unavailability of work for them.

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ANSWER

Derivation on the formula electric potential

Posted by Ishu Ishu 4 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Armaan Armaan 4 years, 2 months ago

W=f^h

0Thank You

ANSWER

Which One of the following material cannot be used to make a lens

Posted by Sahil Singh 4 years, 3 months ago

CBSE > Class 10 > Science

1 answers

@Mrittika.Sarmah_50 . 4 years, 2 months ago

Clay ( hope it will be helpful )

1Thank You

ANSWER

Differentiate between respiration and breathing?

Posted by Jiya Pasare 4 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Ann Mary Binu 4 years, 3 months ago

Respiration :- It is a chemical reaction.oxygen is breakdown glucose in order to energy which is used by the various function. Breathing :-It is a physical reaction.it involves the inhalation and exhalation of air (oxygen andcarbon dioxide ) in out of the lungs.

0Thank You

Kritika . 4 years, 3 months ago

Respiration- -It happens in all the cells of the body. -energy in the form of atp is produced. -involuntary Breathing- -mostly cells of the thoracic cavity are involved. -no energy is produced. -voluntary

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