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What is difference between permanent magnet and bar magnet

Posted by Mukul Kumar (Jul 23, 2017 7:40 p.m.) (Question ID: 6878)

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What is salt? How acids n base strength depends on h n oh ions????

What is water of crystalisation???

 

Posted by Himanshi Sharma (Jul 23, 2017 3:07 p.m.) (Question ID: 6873)

  • good question

    Posted by Jatin Kumar Yadav (Jul 23, 2017 3:41 p.m.)
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  • salt is a substance which is formed when acid reacts with base . It depends upon  pH( H and OH ions ) of relative acid and base

     

    Answered by Just Henry (Jul 24, 2017 12:20 a.m.)
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two metallic conductors Aand B are connected in series.Wire A has length'L' and radius R ,WHILE WIREaHAS LENGTH 2l and radius 2r. find the ratio of the total resistance of series combination and resistance of the wireA.if both the the wires are of same material

Posted by Ahmed Mousa (Jul 22, 2017 9:39 p.m.) (Question ID: 6849)

  • Please check if variables used are correct.

    Posted by Geetanjali Kunte (Jul 22, 2017 11:37 p.m.)
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fast........

Posted by Sudhakar Ubale (Jul 21, 2017 7:53 p.m.) (Question ID: 6817)

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what is reflex arc and what are it's components

Posted by Sudhakar Ubale (Jul 21, 2017 7:52 p.m.) (Question ID: 6816)

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  • The shortest possible route traversed by reflexaction is known as reflex arc. Components are receptor, sensory neuron, spinal cord, motor neuron and effector organ.

    Answered by Dr Pathikrt Banerjee (Jul 22, 2017 11:25 a.m.)
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Chemical reaction and equation

Posted by Sahil Wadhwa (Jul 20, 2017 9:55 p.m.) (Question ID: 6803)

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  • A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.

    Answered by Dr Pathikrt Banerjee (Jul 21, 2017 4:50 p.m.)
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Which hormone promotes senesensce  ???

Posted by Nikky Choudhary (Jul 20, 2017 8:50 p.m.) (Question ID: 6797)

  • Tell me fast plzzzz  !!!!

    Posted by Nikky Choudhary (Jul 20, 2017 8:55 p.m.)
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  • The hormones abscisic acid, ethylene, jasmonic acid and salicylic acid are accepted by most scientists as promoters of senescence, but at least one source lists gibberellins, brassinosteroids and strigolactones as also being involved.

    Answered by Sahdev Sharma (Jul 21, 2017 5:32 p.m.)
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  • Abscisic acidethylenejasmonic acid and salicylic acid are the main promoters of senescence.

    Answered by Akash Khetan (Jul 20, 2017 9:44 p.m.)
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Formula of rust

Posted by We Are All Friends (Jul 20, 2017 8:47 p.m.) (Question ID: 6795)

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  • Fe2O3.xH2O where x is the no of water molecules

    Answered by Maziu Kikna (Jul 21, 2017 12:01 a.m.)
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  • Fe2O3.

    Answered by Kriti Bhawsar (Jul 20, 2017 9:03 p.m.)
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 What is schiomatric coefficient?

Posted by Palash Jain (Jul 20, 2017 12:39 p.m.) (Question ID: 6765)

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  • 2NaOH + H2SO4   ---------->   Na2SO4   +  H2O

    The coefficient before all the compounds in the reaction above is called stoichiometric coefficient. For example the stoichiometric coefficient before NaOH is 2. If nothing is written before a compound it is considered as 1. For example the stoichiometric coefficient before H2SO4 is 1.

     

    Answered by Jatin Kumar Yadav (Jul 23, 2017 1:33 p.m.)
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What was the mean of satyagrah for gandhi ji? ?

Posted by Nikky Choudhary (Jul 19, 2017 4:54 p.m.) (Question ID: 6758)

  • Sorry que of sst

    Posted by Nikky Choudhary (Jul 19, 2017 4:55 p.m.)
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What is homeostasis? ?

Posted by Nikky Choudhary (Jul 18, 2017 10:50 p.m.) (Question ID: 6749)

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  • Homeostasis is the ability of an organism to self adjust with the environmental change to keep internal environment constant. 

    Answered by Durgesh Bishi (Jul 19, 2017 2:59 p.m.)
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Who secrets hormone in plants ??

Posted by Nikky Choudhary (Jul 18, 2017 10:45 p.m.) (Question ID: 6748)

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  • Every cell of plant is capable for secretion of hormone. For example cell in root and shoot region secret auxin hormone. 

    Answered by Durgesh Bishi (Jul 19, 2017 3:02 p.m.)
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Are glands also present in plants??

Posted by Nikky Choudhary (Jul 18, 2017 10:45 p.m.) (Question ID: 6747)

  • Please !!! Be fast .

    Posted by Nikky Choudhary (Jul 18, 2017 11:09 p.m.)
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The heat produced in a conductor carrying current is 40l in 4sec if the current be doubled then find the heat produced in 4sec

Posted by Surender Kumar (Jul 18, 2017 6:17 a.m.) (Question ID: 6725)

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  • H = I2RT

    H1=I12RT

    40 = I12RT ............. (1)

    H2=I22RT,   where I2 = 2I1

    = (2I1)2RT

    =4I12RT

    = 4x40 = 160 J

    Answered by Rahul Agarwal (Jul 21, 2017 11:17 p.m.)
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Is H2 acid or base 

Posted by Rajya Laxmi (Jul 17, 2017 9:23 p.m.) (Question ID: 6723)

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  • Hydrogen H​​​​​​2 is neither base nor acid. It is neutral in nature.

    Answered by Sahdev Sharma (Jul 20, 2017 6:34 p.m.)
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What to do if I want to attend other classes too with my 10 th class at my CBSE guide . Com?

Posted by Sanjay Joshi (Jul 16, 2017 10:55 p.m.) (Question ID: 6700)

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How to solve circuit with the help of symmetry method?

 

Posted by Sanjay Joshi (Jul 18, 2017 1:40 p.m.) (Question ID: 6699)

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Can you elaborate me, what is the term thromboplastin and it's function?

Posted by Sanjay Joshi (Jul 16, 2017 10:46 p.m.) (Question ID: 6698)

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  • Thromboplastin (TPL) is a plasma protein aiding blood coagulation through catalyzing the conversion of prothrombin to thrombin. It is a complex enzyme that is found in brain, lung, and other tissues and especially in blood platelets and that functions in the conversion of prothrombin to thrombin in the clotting of blood—called also thrombokinase.

    Answered by Dr Pathikrt Banerjee (Jul 19, 2017 4:30 p.m.)
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What are protid, submaxillary and sublingual and also explain it's function?

Posted by Sanjay Joshi (Jul 16, 2017 10:45 p.m.) (Question ID: 6697)

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  • These are salivary glands situated in the mouth cavity. 1 pair of each type is found. They secrete a digestive juice called saliva which helps in partial breakdown of carbohydrates.

    Answered by Dr Pathikrt Banerjee (Jul 17, 2017 1:46 p.m.)
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I know that kircho flow is not in our syllabus but what is it??

Posted by Sanjay Joshi (Jul 16, 2017 10:43 p.m.) (Question ID: 6696)

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  • The voltages around a closed path in a circuit must sum to zero. (Kirchoff's law 1) , the voltage drops being negative (following a current through a resistor), while the gains are positive (going through a battery from the negative to the positive terminal).

    Answered by Dr Pathikrt Banerjee (Jul 19, 2017 4:31 p.m.)
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What is proper definition of visible spectrum in photosynthesis??

 

Posted by Sanjay Joshi (Jul 18, 2017 1:42 p.m.) (Question ID: 6694)

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What do you meant by excitation of electrons in chlorophyll??

Posted by Sanjay Joshi (Jul 20, 2017 12:50 p.m.) (Question ID: 6693)

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In response to which stimulus does the branches of a fallen tree grow and why? Please explain the reason. .

Posted by Nikky Choudhary (Jul 16, 2017 7:12 p.m.) (Question ID: 6692)

  • Fast please !!

    Posted by Nikky Choudhary (Jul 16, 2017 7:29 p.m.)
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  • The branches of a fallen tree grow in response to light and gravity. This is because branches are positively phototropism and negatively geotropism.

    Answered by Rachna Gupta (Jul 16, 2017 7:35 p.m.)
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How is our brains double protected against injuries and shocks ??

Posted by Nikky Choudhary (Jul 16, 2017 11:06 a.m.) (Question ID: 6681)

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  • 1) By the presence of bony box or cranium housing the brain

    2) The presence of three meninges fromoutside inwards they are--- Dura matter, arachnoid matter and pia matter and

    3) Cerebrospinal fluidpresent in the ventricles of the brain which acts as a shock absorber.

    Answered by Dr Pathikrt Banerjee (Jul 16, 2017 11:33 a.m.)
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What is carbon fixation?

Posted by Mukesh Kumar Verma (Jul 16, 2017 9:01 a.m.) (Question ID: 6673)

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  • The different ways by which carbon of the atmosphere is incorporated into living organisms is called carbon fixation.

    Answered by Dr Pathikrt Banerjee (Jul 16, 2017 11:37 a.m.)
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What is diastema?

 

Posted by Mukesh Kumar Verma (Jul 16, 2017 9:01 a.m.) (Question ID: 6672)

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  • The gap created due to the absence of incisors and canines mostly in rodents and ungulates is distema

    Answered by Dr Pathikrt Banerjee (Jul 16, 2017 11:42 a.m.)
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What is basic difference between emulsification of fat and digestion of fat?

 

Posted by Mukesh Kumar Verma (Jul 16, 2017 8:59 a.m.) (Question ID: 6671)

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  • Emulsification is a term used to describe fats that have formed into globules (called micelles) the hydrophobic fat is surrounded by something like a phospholipid (having a hydrophilic and hydrophobic component.)

    Chemical digestion would be actually breaking apart the chemical bonds of the fat

    Answered by Payal Singh (Jul 20, 2017 6:52 p.m.)
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On a graph of potential difference and current, which axis will have current?

Posted by Rachna Gupta (Jul 15, 2017 5:24 p.m.) (Question ID: 6656)

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  • horizontal axis

     

    Answered by Medha Paneri (Jul 15, 2017 6:45 p.m.)
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On a VI graph, which axis will potential difference be marked on -   x-axis or          y-axis?

Posted by Rachna Gupta (Jul 15, 2017 1:15 p.m.) (Question ID: 6649)

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  • Y axis

    Answered by Geetanjali Kunte (Jul 22, 2017 11:38 p.m.)
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How do hormones reach the organs they control?

Posted by Nikky Choudhary (Jul 14, 2017 8:03 p.m.) (Question ID: 6642)

  • it's urgent   !!!  fast please!

    Posted by Nikky Choudhary (Jul 14, 2017 8:05 p.m.)
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  • Endocrine glands secrete hormones into blood stream. Hormones reach the organs they control   THROUGH BLOOD.

    Answered by Rachna Gupta (Jul 15, 2017 1:18 p.m.)
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  • Simply through the blood. After release they enter into the blood through which they are cariied to different target organs.

    Answered by Dr Pathikrt Banerjee (Jul 15, 2017 1:12 p.m.)
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  • Hormones are part of the endocrine or ductless gland system. 

    They are called ductless glands because their products (hormones) are not transported by tubes, but by the circulatory system. 

    A hormone often has a target organ in another place in the body, and impacts that place by going through the blood system rather than being directly connected via a tube to that target organ.

    Answered by Hasan Raza (Jul 14, 2017 9:23 p.m.)
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