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

There will be a no change in the field lines they will move north to south and from inside south to north. Only position of the magnet will be changed north will became south and south will became north

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State two main characteristics of elements on which modern periodic table is based

Posted by Viveka Nil 3 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Saumya Singh 3 years, 2 months ago

Atomic no. And properties of elemets

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Adarsh Kumar 3 years, 2 months ago

Two main things on which modern periodic table is based are a) atomic number. b) On their properties. ii) There was no fixed position for Hydrogen as it acts like halogens as well as like alkali metals.

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What is salivary amylase?

Posted by Rishank Pandey 3 years, 2 months ago

CBSE > Class 10 > Science

4 answers

Saniya Naqeeb 3 years, 2 months ago

Salivary amylase is a type of enzyme which is present saliva . The function of salivary amylase change into starch and converted amylose

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Guranshveer Kaur 3 years, 2 months ago

Salivary amylase is a type of enzyme which is present in saliva . It mixes with chewed food and makes it sleepry so that it can pass through food pype easily.

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Saumya Singh 3 years, 2 months ago

This is term 1 question

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Adrija Saha 3 years, 2 months ago

The salivary amylase is an enzyme which is present in saliva of humans and animals. The function of the salivary amylase is to convert the starch into sugars. This enzyme aids in the digestion process of food.

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What is difference between autotroph and autotrophic nutrition

Posted by Shailja Pandey 3 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Suchitra Sen 3 years, 2 months ago

The organism which make their own food using simple inorganic substance they are called autotroph and this mode of nutrition is called autotrophic nutrition.

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What is difference between reduction and oxidation ?

Posted by K_Hushii 🍁 3 years, 2 months ago

CBSE > Class 10 > Science

3 answers

K_Hushii 🍁 3 years, 2 months ago

Ch 1 in chemistry (chemical reactions and equation)

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Âťťíťůđē Bøý 3 years, 2 months ago

Which chp

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Adrija Saha 3 years, 2 months ago

Oxidation is a process of the addition of oxygen or removal of hydrogen. Reduction is a process of removal of oxygen or the addition of hydrogen.

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How are the sperms delivered from site of their production?

Posted by Rinku Sheoran 3 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Sushant Patil 3 years, 2 months ago

Sperms are produced in testes. It then passes through vast deferans, collecting secretions from prostate gland, seminal vessicle and cowper's gland and then is sent out through the urinogenital tract of the *****.

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Why -CHO group can not be present in the middle of the Carbon atom chain?

Posted by Rinku Sheoran 3 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Rinku Sheoran 3 years, 2 months ago

Btao yarr

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What is difference between corrosion and rancidity??????

Posted by Utkarsh Thakur 3 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Utkarsh Thakur 3 years, 1 month ago

Thanks for your help 😊😊☺️☺️

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K_Hushii 🍁 3 years, 2 months ago

Rancidity- the oxidation of oils or fats in food resulting in bad taste and smell is called Rancidity...... & corrosion is th process in which metal are eaten up gradually by the action of air, moisture and chemical on there surface.......

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What is digestive

Posted by Ekansh Nashine 3 years, 2 months ago

CBSE > Class 10 > Science

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what are covalent bond? why ar they different from iconic compound? list their three characteristics properties.

Posted by Kanishka Singh 3 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Harshita Chaudhary 3 years, 2 months ago

A covalent bonds are those bonds which are formed by sharing of electrons. They are different from ionic bond because ionic bonds is formed by transfer of electrons Three characteristics :- Poor conductor of electricity Have low melting and boiling point The intermolecular forces between the atoms are weak.

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Anish Kumar Singh 3 years, 2 months ago

covalent compound are the compound that contain covalent bonds in the molecule .A covalent bond is formed by sharing of electrons between the atoms. while a covalent compound contain covalent compound bonds, the ionic compound is made up of ionic bond which is formed by transference of electrons from one atom to the other. Characteristics of covalent compound: (i) these compounds show low melting points and boiling points because the intermolecular force are weak. (ii) such compounds are poor conductor of electricity. (iii) generally insoluble or less soluble in water but soluble in organic solvent.

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Kanishka Singh 3 years, 2 months ago

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A 10 cm wire is cut in half and joined parallel to each other. Find the ratio of the resistance before and after the arrangement

Posted by Rishab Kandwal 3 years, 2 months ago

CBSE > Class 10 > Science

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Thank you all

Posted by Tanviii Pandey 3 years, 2 months ago

CBSE > Class 10 > Science

4 answers

Busy .. 3 years, 2 months ago

I am sorry

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K_Hushii 🍁 3 years, 2 months ago

Then

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Tanviii Pandey 3 years, 2 months ago

Nothing

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Busy .. 3 years, 2 months ago

About what?

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An arrow 2.5cm high is placed at a distance of 25cm from diverging mirror of focal length 20cm. Find the nature,size and position of the image formed

Posted by Deepthi 007 3 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Adrija Saha 3 years, 2 months ago

welcome

1Thank You

Deepthi 007 3 years, 2 months ago

Thank you for helping me

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Adrija Saha 3 years, 2 months ago

The image will be formed at 11.11 cm behind the mirror,which will be virtual,erect and of size 1.11 cm.

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West Chennai sahodaya question paper answer

Posted by Numan Numan 3 years, 2 months ago

CBSE > Class 10 > Science

0 answers

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What is free fall?

Posted by Tanviii Pandey 3 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Ankita Lamba 3 years, 2 months ago

Yes

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Tanviii Pandey 3 years, 2 months ago

Thank you for explaining

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Utkarsh Yadav 3 years, 2 months ago

When body falls towards earth without any external force is called free fall

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Why energy level from one trophic level to next trophic level only 10%

Posted by Deep Das 3 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Burose Khan.A 3 years, 2 months ago

Because 90° of the energy lost on the surrounding environment.

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Priyanka K 3 years, 2 months ago

Because 90%of the energy is used for other metabolic activities. So only 10%is transferred

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Tanviii Pandey 3 years, 2 months ago

As we pass from one trophic level to the next, only 10% of energy is transferred from the first trophic level to the next. This is because a lot of energy is lost to the surroundings and rest is utilised by the organis

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What are the types of birth control

Posted by Rooth Rooth 3 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Kriti Verma 3 years, 2 months ago

Barrier method Surgical method Copper-T

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Suchitra Sen 3 years, 2 months ago

Barrier method Surgical method Oral pills

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What are the different between methane and ethane

Posted by Sanyam Varma 3 years, 2 months ago

CBSE > Class 10 > Science

4 answers

Rinku Sheoran 3 years, 2 months ago

Ethane have only Single Carbon.. Methane have Two Carbon...

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Burose Khan.A 3 years, 2 months ago

Single carbon-methane, two carbon-ethane

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Anshika Sharma 3 years, 2 months ago

methane contains only one carbon atom bonded to four hydrogen atoms whereas ethane contains two carbon atoms bonded to each other and each carbon atom is bonded to three hydrogen

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Ayush Nagdev 3 years, 2 months ago

By using the formula CnH2n+2 Putting n=1 , we get CH4 ( methane ) Putting n=2 , we get C2H6 ( Ethane).

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two wires having same length but radius R1 and R2 find the ratio of their resintant and resistivity if they are made up of same material

Posted by Mukund Bhardwaj 3 years, 2 months ago

CBSE > Class 10 > Science

0 answers

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What is convex and concave mirrors?

Posted by Kishore ✌️ 3 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Anshu Tyagi 3 years, 2 months ago

These are the parts of a spherical mirror. The image formed on a screen is known as concave mirror. The image doesn't formed on the screen is known as convex mirror

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Adrija Saha 3 years, 2 months ago

Spherical mirrors whose inner side is reflecting are called concave mirrors. Spherical mirrors whose outer side is reflecting are called convex mirrors

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All the formula related to electricity chapter

Posted by Priyanka K 3 years, 2 months ago

CBSE > Class 10 > Science

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Write similarity between Mendel's factor and Gene's?

Posted by Aanya Garg 3 years, 2 months ago

CBSE > Class 10 > Science

0 answers

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Draw a electron dot structure of ethyne ?

Posted by Ayush Nagdev 3 years, 2 months ago

CBSE > Class 10 > Science

0 answers

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two visible contrasting character

Posted by Abdul Samad 3 years, 2 months ago

CBSE > Class 10 > Science

0 answers

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If anyone hurts u so much just smile and show them ur ATTITUDE

Posted by Âťťíťůđē Bøý 3 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Neha Raghav 3 years, 2 months ago

Hii

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Shalini Singh 3 years, 2 months ago

Yes?

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Is the position of a star as seen by us it's true position? Justify your answer

Posted by Adrija Saha 3 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Burose Khan.A 3 years, 2 months ago

Because of atmospheric refraction it's position was changed

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Burose Khan.A 3 years, 2 months ago

No it is not it's true position

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What are the difference between a sexual and sexual reproduction

Posted by Neeraj Kumar 3 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Harshita Chaudhary 3 years, 2 months ago

Asexual reproduction only a single parent is involved in sexual reproduction two parents are involved Asexual reproduction take less time and energy Sexual reproduction take more time and energy Asexual reproduction there is no variations occurs among the organisms which doesn't lead to evolution Sexual reproduction there is variations which leads to evolution In asexual reproduction the individual is same as their parents In sexual they are different

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Abhinav Kumar 3 years, 2 months ago

SEXUAL 1. They can passed to the next generation. 2.Two parent are involved in a sexual reproduction. 3. Change in DNA Example-1. Nose shape 2. Hair colour ASEXUAL 1.They can't passed to the next generation. 2.Only one parent is involved in a asexual reproduction. 3. Don't changa in DNA. Example 1. Learn speaking English 2. Learn to play puzzle.

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Adrija Saha 3 years, 2 months ago

Asexual reproduction produces offsprings that are genetically identical to a single parent where as in sexual reproduction, two parents contribute genetic information's to produce unique offsprings.

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36000 heat energy is

Posted by Subhasis Bhattacharjee 3 years, 2 months ago

CBSE > Class 10 > Science