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    • Posted by Shreya Gandhi 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 0 answers
    ANSWER

    • Posted by Varun Sharma 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 2 answers

    Malaika Sharma 5 years, 3 months ago

    ACIDS: 1.Acids are sour in taste. 2.It turns blue litmus red. 3.Ph value of acids is less than 7. BASES: 1.Bases are bitter in taste. 2.It turns red litmus blue. 3.Ph value of bases is more than 7.

    1Thank You

    Yogita Ingle 5 years, 3 months ago

    Acid Base
    Acids are the chemicals that readily accept electrons. Bases are the chemicals that readily donate electrons.
    Acids increase H+ ion concentration in aqueous solution       Bases increase OH- ion concentration in aqueous solution.   
    Acids turn Blue litmus Red Bases have no change with Blue Litmus paper
    Acids have no change with Red Litmus Paper Bases turn Red litmus paper Blue
    Acids have a pH lower than 7 Bases have a pH higher than 7
    Acids have no change on turmeric paper Acids change turmeric paper to red
    Acids turn china rose indicator solution Pink Bases turn china rose indicator solution Green
    Acids neutralise Bases and form salt. Bases neutralise acids and form salt
    Acids taste Sour Bases taste bitter

    3Thank You

    ANSWER

    • Posted by Divija Bansal 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 1 answers

    Riya Philip 5 years, 3 months ago

    Join betternation.xyz This is a site where u can have a lot of friends and fun ? ? ? -Be Social

    0Thank You

    ANSWER

    • Posted by Faiz Ansari 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 5 answers

    Ashish Kumar 5 years, 3 months ago

    Mitrochondria

    0Thank You

    Saurabh ???? 5 years, 3 months ago

    Mitochondria is known as power house of cell.

    1Thank You

    Kritika ? 5 years, 3 months ago

    Mitochondria

    0Thank You

    Md Shami Akhatar 5 years, 3 months ago

    mithocondria

    0Thank You

    Krishna Mali 5 years, 3 months ago

    Mitochondria

    0Thank You

    ANSWER

    • Posted by Rohan Kumar 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 1 answers

    Harsh Kumar 5 years, 3 months ago

    read the chp again and find your ans.

    0Thank You

    ANSWER

    • Posted by Raksha Rathore 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 1 answers

    Magic Study 5 years, 3 months ago

    You can explain it by giving... example of 4 friends ..... 2 in one pari and other 2 in another pair .. and in 1st pair the friends get angrey with each other and in 2nd pair also.. and then one person of 1st and one of 2nd both came in friendship and same occurred in the 2 remaining persons

    3Thank You

    ANSWER

    • Posted by Sanjana Kumari 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 5 answers

    Archiii Kar 5 years, 3 months ago

    Because it very reactive metal so it catches fire rapidly i.e it burns in atmosphere EQUATION:- 4Na(s)+O2(g) ------> 2Na2O2(S)

    2Thank You

    Satyam Lodhi Rajput 5 years, 3 months ago

    It catch fire easily when kept in open

    1Thank You

    Ashish Kumar 5 years, 3 months ago

    Sodium is most reactive me tels can burn in atomosphere

    0Thank You

    Md Shami Akhatar 5 years, 3 months ago

    bcz sodium is highly reactive? that's why it is kept in kerosene•

    0Thank You

    Tejasvi Jamwal 5 years, 3 months ago

    Sodium is highly reactive metal and is stored in kerosene because it does not react with kerosene

    4Thank You

    ANSWER

    • Posted by Sanjana Kumari 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 4 answers

    Harsh Kumar 5 years, 3 months ago

    salt and hydrogen gas is evolve in both cases

    0Thank You

    Vanshika Sharma 5 years, 3 months ago

    Salt will be formed and hydrogen gas will be evolved

    0Thank You

    Archiii Kar 5 years, 3 months ago

    METALS WITH ACIDS:- 1.Metals + dil. HCl------> salts + Hydrogen gas 2. Generally metals don't react with dil HNO3 Metals +dil. HNO3 ------->salts+NO2/N2O+ H2O EXCEPTIONAL Case:- Mn and Mg only react with HNO3 NON-METALS WITH ACID:- Generally non metals don't react with dil acids but on heating with concentrated acids, these forms oxides or salts HOPE IT HELPED YOU?

    2Thank You

    Yogita Ingle 5 years, 3 months ago

    Generally non metals don't react with acids because of their non corrosive nature and when metal are reacted with acids they produce salt and hydrogen gas ..

    Explanation:

    Acids + metals = salt and hydrogen gas .

    Acids + non metals = there will be no relation ... No change

    0Thank You

    ANSWER

    • Posted by Sanjana Kumari 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 2 answers

    Archiii Kar 5 years, 3 months ago

    1. By adding Baking soda(NaHCO3) or ( sodium bicarbonate) 2. By adding dil. HCl or lemon juice (critric acid) to the solutions HOPE IT HELP U

    1Thank You

    Sanika Walimbe 5 years, 3 months ago

    Increase its pH by adding baking soda to it. And decrease the pH by adding an acid like citric acid or HCl

    0Thank You

    ANSWER

    • Posted by Sanjana Kumari 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 5 answers

    Sanika Walimbe 5 years, 3 months ago

    Small intestine

    0Thank You

    Md Shami Akhatar 5 years, 3 months ago

    small intestine

    0Thank You

    Krishna Mali 5 years, 3 months ago

    Small intestin

    0Thank You

    Aruba Ansari 5 years, 3 months ago

    small intestine

    2Thank You

    Samraat Sahil Verma 5 years, 3 months ago

    3. Small intestine

    1Thank You

    ANSWER

    • Posted by Seema Choudhary 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 5 answers

    Arihant Tomer 5 years, 3 months ago

    Diamond, Graphite and Buckminsterfullerene

    1Thank You

    Harsh Kumar 5 years, 3 months ago

    Diamond ,Graphite and Buckminsterfullerene

    1Thank You

    Satyam Lodhi Rajput 5 years, 3 months ago

    Diamond and graphite

    2Thank You

    Kallol Chakraborty Dey 5 years, 3 months ago

    Diamond ? and Graphite

    2Thank You

    Samraat Sahil Verma 5 years, 3 months ago

    Diamond, graphite and buckminsterfullerene are three allotropes of carbon

    3Thank You

    ANSWER

    • Posted by Maahi ......♾ 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 5 answers

    Archiii Kar 5 years, 3 months ago

    Electrical conductivity in solid state

    1Thank You

    Deepanshi Gupta 5 years, 3 months ago

    They don't conduct electricity in solid state.

    1Thank You

    Satyam Lodhi Rajput 5 years, 3 months ago

    Dont conduct eletricity in solid state due to rigid structure

    1Thank You

    Accidental Genius 5 years, 3 months ago

    Electrical conductivity in solid state is the property not shown by ionic compounds. Hope it helps..

    1Thank You

    Vanshika Baliyan 5 years, 3 months ago

    G........ E

    0Thank You

    ANSWER

    • Posted by Maahi ......♾ 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 4 answers

    Malaika Sharma 5 years, 3 months ago

    Because the bubbles of hydrogen gas formed,stick to the surface of the metal.

    1Thank You

    Akshika Agrvanshi 5 years, 3 months ago

    Bcz formation of bubbles in hydrogen ion

    1Thank You

    Seema Choudhary 5 years, 3 months ago

    Due to formation of bubbles of Hydrogen

    4Thank You

    Vanshika Baliyan 5 years, 3 months ago

    Google pe check kar

    2Thank You

    ANSWER

    • Posted by Aayush Raj 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 4 answers

    Sanjana Kumari 5 years, 3 months ago

    greater than 7

    1Thank You

    Akhya Sahay 5 years, 3 months ago

    More than 7

    0Thank You

    Maahi ......♾ 5 years, 3 months ago

    "Its"not Ot typing mistake ?

    0Thank You

    Maahi ......♾ 5 years, 3 months ago

    A solution turn red litmus blue is basic in nature. Ot pH may be "greater than 7"

    0Thank You

    ANSWER

    • Posted by Krishna Jaiswal 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 2 answers

    Aruba Ansari 5 years, 3 months ago

    blood will clot

    1Thank You

    Accidental Genius 5 years, 3 months ago

    Heparin is a naturally occurring anticoagulant produced by basophils and mast cells . It prevents the formation of blood clots inside the body. If heparin is absent in our blood , our blood would clot not allowing blood circulation, blocking capillaries and veins causing severe pain. This ultimately leads to death.

    1Thank You

    ANSWER

    • Posted by Divyanshi Rathore ❣ 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 5 answers

    Harsh Kumar 5 years, 3 months ago

    Potassium

    1Thank You

    Sonu Jha 5 years, 3 months ago

    According to ncert and s chand reactivity series,Potassium is the most reactive element.

    0Thank You

    Satyam Lodhi Rajput 5 years, 3 months ago

    Sodium and francium

    1Thank You

    Yangzee Sherpa 5 years, 3 months ago

    Agar galat huwa toh SORRY

    0Thank You

    Yangzee Sherpa 5 years, 3 months ago

    1)Fluorine & 2)Caesium. HoPe It HeLpS yOu??

    0Thank You

    ANSWER

    • Posted by Prem Parwani 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 1 answers

    Meghna Thapar 5 years, 1 month ago

    • Resistance of a System in Resistors:

    There are two methods of joining the resistors together either in series or parallel.

    Resistors in Series:

    Let resistance are connected in series R1, R2 and R3 then resultant resistance will be equal to the R1+R2+R3.

    The current flowing through each resistance is the same. The  potential  difference  across  the  ends  of  the  series  combination  is distributed  across  the resistances.

    The equivalent resistance (Rs) of a series combination containing resistances R1, R2, R3... is

    Rs = R1 + R2 + R3 +...

    The equivalent resistance is greater than the greatest resistance in the combination.

     

    Resistors in Parallel:

     

    The  potential  difference  across  each  resistance  is  the  same  and  is  equal  to  the  potential  difference across the combination.

    The main current divides itself, and different current flows through each resistance.

     

    The equivalent resistance (RP) of a parallel combination containing resistances R1, R2, R3... is given by

    1/RP = 1/R1 + 1/R2 + 1/R3 +...

    The equivalent resistance is lesser than the least of all the resistances in the combination.

    A series arrangement not used for connecting domestic electrical appliances in a circuit because if one electrical appliance stops working due to some defect, then all other appliance also stop working as whole circuit broken.

    Different electrical appliances in a domestic circuit are connected in parallel because

    1. If one electrical appliances stops working due to some defect other will not stop working.
    2. In parallel connection system each appliance has own switch.
    3. In parallel case each appliance gets constant voltage.

    0Thank You

    ANSWER

    • Posted by Ravi Suwalka 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 3 answers

    Satyam Lodhi Rajput 5 years, 3 months ago

    Chlorine , bromine , iodine

    0Thank You

    Yangzee Sherpa 5 years, 3 months ago

    1) Lithium(Li). 2) Sodium(Na). 3) Potassium(K). HoPe It HeLpS yOu??

    2Thank You

    Halak Dudiya 5 years, 3 months ago

    Lithium, sodium and potassium are the 3 elements which show dobereiner's triad.

    3Thank You

    ANSWER

    • Posted by Raman Sharma 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 1 answers

    Sakshi Bishnoi 5 years, 3 months ago

    5elements are in between element x and y acc. To newland's law of octave

    0Thank You

    ANSWER

    • Posted by Aditya Jain 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 4 answers

    Sanika Walimbe 5 years, 3 months ago

    The property of alluminium to be beaten up into sheets, i.e, malleability

    0Thank You

    Yangzee Sherpa 5 years, 3 months ago

    ...First, write the full question...

    0Thank You

    Arpita .9 5 years, 3 months ago

    It is also a good conductor of heat.

    0Thank You

    Arya Agrawal 5 years, 3 months ago

    Aluminium does not react with food materials even when the food is very hot That is why aluminium is used in manufacturing cooking utensils and aluminium foils as well

    0Thank You

    ANSWER

    • Posted by Om Chaubey Chaubey 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 4 answers

    Om Chaubey Chaubey 5 years ago

    Mai janna chahta hu कहा कहा से है ap log mai up के बनारस से हू. And I don't make friend

    0Thank You

    Krishna Jaiswal 5 years, 3 months ago

    Why!???

    0Thank You

    Riya Philip 5 years, 3 months ago

    Join betternation.xyz This is a site where u can have a lot of friends and fun ? ? ?

    0Thank You

    Yangzee Sherpa 5 years, 3 months ago

    ?WHAT?

    0Thank You

    ANSWER

    • Posted by Nandini Shekhar 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 4 answers

    Moksha Maheta 5 years, 3 months ago

    According to figure tge direction of current if positive to negative

    0Thank You

    Aryan Kumar 5 years, 3 months ago

    Positive to negative

    0Thank You

    Aryan Yadav 5 years, 3 months ago

    Conventional current- positive to negative ( which we always use and draw ) Electric current - negative to positive ( this is the direction of flow of electrons).

    0Thank You

    Gauri Pandey 5 years, 3 months ago

    Negative to positive ...but according to figure which we drawn ...postive to negative .

    1Thank You

    ANSWER

    • Posted by Ayan Patel 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 4 answers

    Yangzee Sherpa 5 years, 3 months ago

    When soap is dissolved in water, its hydrophobic ends attach themselves to dirt and remove it from the cloth. First, the molecules of soap arrange themselves in micelle formation and trap the dirt at the centre of the cluster. These micelles remain suspended in water like particles in a colloidal solution. The various micelles present in water do not come together to form a precipitate as each micelle repels the other because of the ion-ion repulsion. Thus, the dust particles remain trapped in micelles (which remain suspended) and are easily rinsed away with water. Hence, soap micelles remove dirt by dissolving it in water. HoPe It HeLpS yOu??

    0Thank You

    __Priyanshi__ Taneja 5 years, 3 months ago

    The dirt present on clothes is organic in nature and insoluble in water. Therefore, it can not be removed by only washing with water. When soap is dissolved in water, it hydrophobic ends attach themselves to the dirt and remove it from the cloth. Then, the molecule of soap arrange themselves in micelle formation and trap the dirt at the centre of the cluster.. These micelles remains suspended in the water.. Hence, the dust particles are easily rinsed away by water.....

    2Thank You

    Pranali Solanke 5 years, 3 months ago

    Agr wrong ho to bta Dena?

    2Thank You

    Pranali Solanke 5 years, 3 months ago

    The cleansing action of both soapsand detergents results from their ability to lower the surface tension of water, to emulsify oil or grease and to hold them in a suspension in water. This ability is due to the structure ofsoaps and detergents. In water, a sodium soap dissolves to form soapanions and sodium cations.

    1Thank You

    ANSWER

    • Posted by Anshul Arora 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 0 answers
    ANSWER

    • Posted by Vijayasri R 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 1 answers

    Gaurav Seth 5 years, 3 months ago

    Cow has its nutrition apparatus which is cellulose rich and also it depends only on only green vegetation for its food and also the same is digestive by animal.

    In case of lion, they are meat eater, they prey on meat. They are highly depend on other animal for nutrition and their nutrition apparatus is animals like deer, monkey, elephant etc.

    1Thank You

    ANSWER

    • Posted by Ritish Kumar 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 5 answers

    __Priyanshi__ Taneja 5 years, 3 months ago

    It turns pink.....

    0Thank You

    Gauri Pandey 5 years, 3 months ago

    It turns pink

    0Thank You

    Silky Yadav 5 years, 3 months ago

    It turns pink

    1Thank You

    Chirag Jain 5 years, 3 months ago

    It turns pink

    1Thank You

    Aditya Rai 5 years, 3 months ago

    It turns to pink

    1Thank You

    ANSWER

    • Posted by Sushmithaa C 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 1 answers

    Yogita Ingle 5 years, 3 months ago

    i. The superior and inferior vena cava bring deoxygenated blood from all the organs of the body to the right atrium and oxygenated blood comes to the left atrium through the pulmonary vein.
    ii. Both the atria contract, and deoxygenated blood from the right atrium is poured in the right ventricle, and oxygenated blood from the left atrium is poured into the left ventricle.
    iii. Blood from the right ventricle enters the lungs through arteries.
    iv. The oxygenated blood from the left ventricle is distributed to all the parts of the body through the aorta.

    1Thank You

    ANSWER

    • Posted by Mohd. Khawaza 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 3 answers

    __Priyanshi__ Taneja 5 years, 3 months ago

    Fats are mainly digested in our small intestine.. Pancreatic lipase from pancreas and bile from liver helps in digestion of food.,.....

    0Thank You

    Yogita Ingle 5 years, 3 months ago

    Digestion is the process of breaking large, insoluble food molecules into smaller molecules for absorption into the bloodstream. This process involves the use of numerous digestive fluids and enzymes including saliva, mucus, bile, and hydrochloric acid.

    The human body has four primary stages of food digestion that include

    • It makes its way through the stomach into the small intestine, where it is digested, after the intake of food by the mouth.
    • In the small intestine the nutrients from the digested food are absorbed into the bloodstream through small pores.
    • The leftover undigested food is sent to the large intestine where the body reabsorbs any unprocessed water or nutrients.

    • The remaining product of waste food is carried out of the body in terms of stools.

    1Thank You

    Mukul Kumar 😎 5 years, 3 months ago

    In our stomach, Big fat droplets are breaked down by the bile juice secreted by our liver. The smaller fat droplets are then digested in our stomach.

    1Thank You

    ANSWER

    • Posted by Anas Mir 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 1 answers

    Sachin Kumar Singh 5 years, 3 months ago

    3.6 metre

    0Thank You

    ANSWER

    • Posted by Twinkle Thakur 5 years, 3 months ago

    CBSE > Class 10 > Science
    • 1 answers

    Yogita Ingle 5 years, 3 months ago

    The human respiratory tract is made up of nostril, larynx, nasal chamber, pharynx, trachea, epiglottis, alveoli, bronchioles, bronchi and lungs. Within the lungs, the oxygen is exchanged for carbon dioxide waste through millions of microscopic sacs known as alveoli. The oxygen inhaled diffuses into the capillaries of the lungs, binds to the haemoglobin and is pumped into the bloodstream. The carbon dioxide from the blood diffuses through the alveoli and is expelled by exhalation.

    The alveoli are thin-walled and richly supplied with a network of blood vessels to facilitate the exchange of gases between blood and the air-filled in alveoli. They have a balloon-like structure that provides maximum surface area for exchange of gases.

    2Thank You

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