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Uses = Soda-acid fire extinguishers, antacid tablets, baking powder (baking soda + tartaric/citric acid), makes cooking faster, making crispy and fried items, making cakes and biscuits.

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Sahil Singh 5 years ago

Nacl+H2O+CO2+NH3→NH4Cl+NaHCO3 or Na2CO3 + CO2 + H2O → 2 NaHCO3 it is use in making cake spongy and it is an antacid

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Adithya Dev A 5 years ago

The chemical preparation of baking soda involves a process known as Solvay's process or ammonia soda process. It is the process of passing CO2 through Ammoniacal brine ( ammonia, salt and water). NaCl + H2O + NH3 + CO2 ----> NaHCO3 + NH4Cl. NaHCO3 is partially soluble and NH4Cl is completely soluble in water. Therefore, baking soda can be procured through simple filtration.

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Why photochemical decomposition reaction finds application in photography ? And

Posted by Hakeem Urva Tul Wusqa 5 years ago

CBSE > Class 10 > Science

1 answers

Dev Vaishnav 5 years ago

Used in black and white photography........................

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what happens when 5 percent alkaline pottasium permanganate solutiins is added drop by drop to warm propyl alcohol taken in a test tube? explain with the help of a chemical equation.

Posted by Rishika Kushwah 5 years ago

CBSE > Class 10 > Science

1 answers

Ayush Kumar 5 years ago

When 5% alkaline potassium permanganate solution is added drop by drop to propanol taken in the test tube, then its purple colour disappears as it oxidizes the propanol to its respective carboxylic acid i.e. propanoic acid. It is because alkaline potassium permanganate is known to be a strong oxidizing agent , which oxidizes the primary alcohol- propanol to propanal and then finally to propanoic acid. Chemical equation: alk. KMnO4 CH3CH3CH2OH ----->CH3CH3CH2COOH

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Atomic radii of the elements of the second period are given below: elements B Be O Li C atomic radius (pm) 88 111 66 152 77 Arrange them in increasing order of their atomic radii. a. O < C < B < Be < Li b. C < O < Be < Li < B c. C < Be< B < Li < O d. O < C < Be < B < Li

Posted by Ayush Kumar 5 years ago

CBSE > Class 10 > Science

1 answers

Adithya Dev A 5 years ago

a.)

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Trihybrid cross

Posted by Pratigya Bharti 5 years ago

CBSE > Class 10 > Science

0 answers

ANSWER

Can anybody give arihant science practice sample paper

Posted by Amritesh Kumar 5 years ago

CBSE > Class 10 > Science

0 answers

ANSWER

With the help of an activity show that sunlight is essential for photosynthesis

Posted by Aditya Mourya 5 years ago

CBSE > Class 10 > Science

1 answers

ಹರ್ಷನಂದ ಹರ್ಷನಂದ 5 years ago

ನಿನ್ನ ವಿಜ್ಞಾನ ಪುಸ್ತಕದ ಲೈಫ್ ಪ್ರೊಸೆಸ್ಸೆಸ್ ಪಾಠವನ್ನು ಒಮ್ಮೆ ಓದು ಅರ್ಥವಾಗುತ್ತದೆ ?????

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डेफिनेशन ऑफ कंडीशन

Posted by Yogita Fulzele 5 years ago

CBSE > Class 10 > Science

3 answers

Adithya Dev A 5 years ago

Also an acceleration in its occurence.

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Adithya Dev A 5 years ago

In the case of chemical reactions.

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Adithya Dev A 5 years ago

Anything essential for the uninterrupted occurence of a chemical reaction is known as CONDITION. Eg:- temperature, pressure, catalysts, etc.

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ANSWER

Write fully balanced chemical equation and state the physical condition and physical state of the reactants and products in the following chemical reactions: (a) iron metal dissolves in copper sulphate solution with the formation of iron sulphate and copper. (b) when solution of chlorine in water is exposed to sunlight, it forms hydrochloric acid. (c) acetylene gas reacts with oxygen on burning to form carbon dioxide and water.

Posted by Raushan Raj 5 years ago

CBSE > Class 10 > Science

1 answers

Adithya Dev A 5 years ago

(a) Fe (s) + CuSO4(aq) ----> FeSO4(aq) + Cu(s). (b) H2(g) + Cl2(aq) ----> 2HCl(aq) + Δ. (c) 2C2H2(g) + 5O2(g) ----> 4CO2(g) + 2H2O(l).

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How many girls wants to become mingle kindly DM me on Vivek2.fulara

Posted by Vivek Fulara 5 years ago

CBSE > Class 10 > Science

1 answers

ಹರ್ಷನಂದ ಹರ್ಷನಂದ 5 years ago

ಇದನ್ನು ಸೈಬರ್ ಕ್ರಯಿಮ್ ಅಧಿಕಾರಿಗಳ ಗಮನಕ್ಕೆ ತರಬೇಕಾಗುತ್ತೆ.************

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What is villi function

Posted by Luyes Mardi 5 years ago

CBSE > Class 10 > Science

4 answers

Anushka Mishra 5 years ago

Villi helps to increase surface area for absorption inside small intestine

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Het Patel 5 years ago

Villi is fingure like projection present inside the inner wall of small intestine which help to increase surface area of the intestine and absorbe the nutrients from the digested food

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Adithya Dev A 5 years ago

Villi are finger like structures present in the inner walls of the small intestine to ensure smooth absorption of nutrients. These transverse folds are characterized with elongated surface area and extensive blood supply for this proper absorption.

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Sahil Singh 5 years ago

to increase surface area of small intestine for absorption.

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ANSWER

if we use pesticides to protect the crops from diseases, then it may cause long term damage to mankind. justify this statement

Posted by Amrita Sen 5 years ago

CBSE > Class 10 > Science

1 answers

Shubham Swami 5 years ago

when we use pesticides they are get washed by rain water and taken either by soil or aquatic plants and animals. from soil they are taken by plants along with minerals. this way they come in the food chain. also as they humun occupy top position in trophic level the major concentration is in humun bengs.As these pesticides are not biodegradable the remain in humun beings

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ANSWER

Brief explanation about magnetic effects of electric current

Posted by Sai Swetha 5 years ago

CBSE > Class 10 > Science

1 answers

Adithya Dev A 5 years ago

When electric current is passed through a conductor, then a magnetic field is also formed around the conductor. Also known as ELECTROMAGNETISM, it was proposed for the first time by Oersted.

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Difference between the properties of metal and non metal

Posted by Lipi Nag 5 years ago

CBSE > Class 10 > Science

5 answers

Abhay Tripathi 5 years ago

METAL ARE LUSTERIOUS GOOD CONDUCTOR OF HEAT AND ELECTRICITY

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Sai Swetha 5 years ago

Metals are lustrous Non metals are non- lustrous

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Tanu Kumari 5 years ago

Metal are sonorus and non metal are sonorus

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Lipi Nag 5 years ago

Please

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Lipi Nag 5 years ago

Jaldi bolo

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ANSWER

Explain about magnetic field lines?

Posted by J Harigovind 5 years ago

CBSE > Class 10 > Science

2 answers

Tarun Yadav 5 years ago

#Magnetic field lines are imaginary lines. #Magnetic field lines never intersect each other

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Laya Lalu 5 years ago

* They are having both magnitude and direction. * No two magnetic field lines are found to cross each other. * Inside the magnet, the direction of magnetic field lines are from south to north. * Outside the magnet, the direction of magnetic field lines are from north to south. * They are closed curves..

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ANSWER

Define the atomic congregation of all elements

Posted by Kishan Yadu 5 years ago

CBSE > Class 10 > Science

1 answers

Divya Soni 5 years ago

In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals.This is also useful for describing the chemical bonds that hold atoms together.

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ANSWER

What are the functions of kidney?

Posted by Harsh Varman 5 years ago

CBSE > Class 10 > Science

2 answers

Adithya Dev A 5 years ago

1) Excretion = Removal of nitrogenous waste products formed during the metabolic reactions taking place in the body of an organism, out of its body is called EXCRETION. 2) Osmo-regulation = Phenomenon of maintaining the balance of water and ions between the body of an organism and its surrounding environment.

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Divya Soni 5 years ago

1. Remove Waste product from the body... 2. Remove drugs from the body... 3. Balance the body fluids... 4. Control the production of red blood cell... 5. Release hormones that regulate blood pressure...

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ANSWER

Areteriole contriction result in which resistance of blood flow???

Posted by Tanvi @1201 5 years ago

CBSE > Class 10 > Science

5 answers

ಹರ್ಷನಂದ ಹರ್ಷನಂದ 5 years ago

My cbse guide.com

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ಹರ್ಷನಂದ ಹರ್ಷನಂದ 5 years ago

Life processes

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ಹರ್ಷನಂದ ಹರ್ಷನಂದ 5 years ago

WHO IS CEO OF TESLA COMPANY

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ಹರ್ಷನಂದ ಹರ್ಷನಂದ 5 years ago

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ಹರ್ಷನಂದ ಹರ್ಷನಂದ 5 years ago

write a detailed note on the nation making after french revolution ???????

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Salivary glands are present in which region of alimentary canal

Posted by Yeshi Pema 5 years ago

CBSE > Class 10 > Science

4 answers

Divya Soni 5 years ago

It receives food and moistens the food with saliva, while the food is mechanically processed by the teeth. The mouth is also known as the oral cavity, and within the oral cavity sits the tongue, the soft and hard palate, the uvula, and numerous salivary glands.

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Mansi Kadian 5 years ago

It is present in the mouth to break down the complex starch

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Amritesh Kumar 5 years ago

They are located just in front of the ears. .The saliva produced in these glands is secreted into the mouth from a duct near your upper second molar...

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Yeshi Pema 5 years ago

Help me

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ANSWER

Difference between limph and blood

Posted by Devansh Namdev 5 years ago

CBSE > Class 10 > Science

2 answers

Devansh Namdev 5 years ago

What double fertilisation

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Kavya Chanana 5 years ago

Blood is fluid which flow in our body wheras lymp comtain a special type of cell which fight against disease

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ANSWER

What is difference between regeneration and fragmentation ?

Posted by Aruna Varshini 5 years ago

CBSE > Class 10 > Science

2 answers

Divya Soni 5 years ago

Fragmentation is a method of asexual reproduction where an organism reproduces by the process of splitting into fragments and each fragment grows into an individual organism. Regeneration, on the other hand, happens when an organism regrows certain parts or limbs which is lost due to predation.

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Kavya Chanana 5 years ago

Regeneration - the process of getting full organism from it cut body part in fragmenation a multi celluar organism on maturing spilt into two organism

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ANSWER

Balance the given equation and also write the type of chemical reaction represented by it BaCl2+Al2(SO4)3------AlCl3+BaSO4

Posted by Vinit Gautam 5 years ago

CBSE > Class 10 > Science

3 answers

Anushka Mishra 5 years ago

3BaCl2 +2Al(SO4)3------- 2AlCl3+ 3BaSO4

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Hariharasudhan Harish 5 years ago

Bacl2 + Al2(So4) gives AlCl3 + Baso4 . Answer :3bacl2 + Al2(so4)3 gives 2Alcl3 + 3Baso4

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Mritunjay Y 5 years ago

3BaCl2 + Al2(SO4)3------- 2AlCl3+ 3BaSO4. It is double displacement reaction.

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ANSWER

An object 2.5 cm high is placed 6.0 cm from a converging lens of focal length of 4.0 cm. Determine (a) the image distance, (b) the image size and (c) the magnification.

Posted by Hakeem Urva Tul Wusqa 5 years ago

CBSE > Class 10 > Science

1 answers

Tanu Kumari 5 years ago

Image distance 12,magnification-2 real and inverted, height of image-5cm downward,.

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ANSWER

An object 1 cm in height is placed at a distance of 0.80m from a double convex lens of focal length 0.2m. Find the location and size of the image formed by (a) calculation and (b) the graphical method.

Posted by Hakeem Urva Tul Wusqa 5 years ago

CBSE > Class 10 > Science

0 answers

ANSWER

Reeta's grandfather always add fodised common salt to his meals. Iodised common salt is better than ordinary common salt. He also has a habit of taking pickle, sauce, processed food and junk food which contain lots of sodium chloride. He is also suffering from hypertension. Doctors advised him that he should take less common salt Reeta's grandfather to take less common salt. 1 Why Doctors advised il. Why should we prefer lodised salt? lii. What values are possessed by Reeta's grandfather?

Posted by Kavipriya Kavipriya 4 years, 10 months ago

CBSE > Class 10 > Science

5 answers

Infant Richu 3 years, 8 months ago

ANSWER FOR (iii) The doctor advised him not to take more common salt in his food.

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Infant Richu 3 years, 8 months ago

ANSWER FOR (i) Because higher quantity of NaCl will increase number of sodium and chloride ions in the body fluid which can increase the osmotic pressure of body fluid, i.e., blood pressure of a person.

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Infant Richu 3 years, 8 months ago

ANSWER FOR. (ii) our thyroidal gland need iodine to secrete thyroxine harmone which regulates carbohydrate , protein , and fat metabolism in the body ,, If the tyroxine is not secreted properly we may face GOITRE (swelling neck)

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Mr Hasim Khan 3 years, 8 months ago

bjghhru

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Adithya Dev A 4 years, 10 months ago

Iodised salt consists of Iodine which is good for our thyroid glands.

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ANSWER

Arihant sample paper 15

Posted by ????? ????? 5 years ago

CBSE > Class 10 > Science