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What happen when we heat the silvercloride

Posted by Rajendra Singh Rawat 6 years, 1 month ago

3 answers

Nitesh Verma 6 years, 1 month ago

When we heat silvercloride broken down into Silver ( grey ) & Chlorine greenish yellow gas form by photochemical decomposition reaction. 2AgCl ----------> 2Ag + Cl Silver Silver Chlorine Chloride

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Anand Tushar 6 years, 1 month ago

When silver chloride is heated it exposed to sunlight and decomposes to give silver metal and chlorine gas. 2Agcl__________ 2Ag+ Cl2

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⚜??Worst Buddy??⚜ 6 years, 1 month ago

Decomposition I think...

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Describe Darwin's theory of evolution...????

Posted by Aadya Singh 6 years, 1 month ago

CBSE > Class 10 > Science

16 answers

Aadya Singh 6 years, 1 month ago

Hii sowndaryaa ?

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Sowndaryaa Lakshmi V 6 years, 1 month ago

Hi aadya sis. Hiii buddy?

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Aadya Singh 6 years, 1 month ago

Bye??

2Thank You

⚜??Worst Buddy??⚜ 6 years, 1 month ago

2Thank You

Aadya Singh 6 years, 1 month ago

Oh ????

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⚜??Worst Buddy??⚜ 6 years, 1 month ago

Bina emoji k aapke msges fike lgte hai

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⚜??Worst Buddy??⚜ 6 years, 1 month ago

Hua*

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⚜??Worst Buddy??⚜ 6 years, 1 month ago

Aapko kya hia aadu?

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Aadya Singh 6 years, 1 month ago

Nah..

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⚜??Worst Buddy??⚜ 6 years, 1 month ago

Vese aapki shreya se baat hui?

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⚜??Worst Buddy??⚜ 6 years, 1 month ago

Arre yrr pdna padega lgta hai

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Nitesh Verma 6 years, 1 month ago

Darwinism is a theory of biological evolution developed by the English naturalist Charles Darwin (1809–1882) and others, stating that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce.

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Aadya Singh 6 years, 1 month ago

Bio chapter - heredity and evolution me h...

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⚜??Worst Buddy??⚜ 6 years, 1 month ago

Naam suna suna lagra hai?

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⚜??Worst Buddy??⚜ 6 years, 1 month ago

Darwin kaun hai yll?

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Diahant Kumar 6 years, 1 month ago

What

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ANSWER

write chemical properties of metal and nonmetal

Posted by Jagruti Jagruti 6 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 6 years, 1 month ago

Chemical Properties of Metals:

Reaction of Metals with Oxygen: Almost all metals react with oxygen to form metal oxides.

Metal + Oxygen → Metal oxide

Sodium and potassium are the most reactive and react with oxygen present in the air at room temperature to form the oxides.

Reaction of Metals with Water: Metals react with water to produce metal oxides with the release of hydrogen gas. But all metals do not react with water.

Metal + Water → Metal oxide + Hydrogen

Metal oxides that are soluble in water dissolve in it to further form metal hydroxide.

Metal oxide + Water → Metal hydroxide

Metals such as sodium and potassium react vigorously with cold water to lead to evolution of hydrogen, which immediately catches fire producing a large quantity of heat.

Reactions of Metals with Acids: Metals react with acids to form salt and hydrogen gas.

Metal + Dilute acid → Salt + Hydrogen

Metals react with dilute hydrochloric acid to give metal chloride and hydrogen gas. Example - Magnesium reacts violently with dilute hydrochloric acid to form magnesium chloride and hydrogen.

iv. Metals react with Solutions of other Metal Salts:

A more reactive metal displaces a less reactive metal from its salt solution. For example: When an iron nail is placed in a copper sulphate solution, the blue colour of CuSO4 fades away slowly and a reddish brown copper metal is formed.

CuSO_4(aq) + Fe_(s) → FeSO_4(aq) + Cu_(s)

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chemical properties of metal and nonmetal react with ar air and water and acid

Posted by Jagruti Jagruti 6 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Akash Rai 6 years, 1 month ago

Properties of non metals are----------Nonmetals are poor conductors of heat and electricity. Graphite and Gas carbon are exceptions. Unlike metals, nonmetals aren’t malleable and ductile. Nonmetals react more with metals than with nonmetals. Usually, nonmetals react with other nonmetals in high temperature. Most nonmetals do not react with air in room temperature. White phosphorus is the only nonmetal that reacts with air to form its oxide by burning. Usually, nonmetals do not react with water. Except for Chlorine, chlorine dissolves in water to form an acidic solution. Nonmetals have a low density. They do not form alloys. However, nonmetals like carbon, silicon and phosphorous. Nonmetals exist in all states of matter at room temperature. Different nonmetals have different reactions. Chlorine is the most reactive metal in the halogen family i.e. Chlorine (Cl), Bromine (Br), Iodine (I), and Fluorine (F). The reactivity order of the halogen family is Cl > Br > I. Therefore, Chlorine (Cl) can displace Bromine (Br) and Iodine (I) from solutions of bromides (NaBr) and Iodides (NaI). Ionic solids are formed when nonmetals with high electronegativity react with alkali and alkaline earth metals.

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Akash Rai 6 years, 1 month ago

Properties of metals are-------- The chemical properties of Metals and Nonmetals are described below. Let us start with the chemical properties of metals. The density of metals is usually high. Metals are malleable and ductile. Metals form an alloy with other metals or non – metals. Some metals react with air and corrode. For e.g. Iron. Metals are good conductors of heat and electricity. Lead is an exception. Generally, metals are in a solid state at room temperature. Except for Mercury. Mercury is in a liquid state. Many metals produce metal oxide by burning in the oxygen of the air. Highly reactive metals react violently when they’re burnt in oxygen. Metals like sodium and potassium are stored in oil as they react with air in seconds. They’re highly reactive metals. Less reactive metals like gold, silver, platinum, etc do not tarnish easily. They stay shiny and lustrous. Metals produce metal oxide and hydrogen gas while reacting with water. Soluble metal oxides dissolve in water and create metal hydroxide. Not all metals react with water. However, highly reactive metals like sodium and potassium react with water violently and an exothermic reaction takes places where the hydrogen immediately catches fire. Salt and hydrogen are produced when a metal reacts with an acid. Generally, a metal displaces a less reactive metal in a metal salt solution.

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What is the common name of NaHCO3

Posted by Alok Gupta 6 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Aadya Singh 6 years, 1 month ago

Baking soda..

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⚜??Worst Buddy??⚜ 6 years, 1 month ago

Baking soda

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⚜??Worst Buddy??⚜ 6 years, 1 month ago

Sodium bicqrbonate

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How can we define 1 diopter

Posted by Dhwani Agrawal 6 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Akash Rai 6 years, 1 month ago

When one meter of focal length is inversally is equal to 1diopter i.e. P=1/focal length(in metre)

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Aadya Singh 6 years, 1 month ago

1 diopter is the power of lens whose focal length is 1metre..

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Yashank Kumar 6 years, 1 month ago

When focal length is 1m P=1/f

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ANSWER

What is the speed of ligght in mercury.

Posted by Rishabh Dev Bhardwaj 6 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Yashank Kumar 6 years, 1 month ago

speed of light is about 172,000 km/sec in Hg.

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Do tatb a and b ginke kramank 14 and 16 hai aaburt sardi me dono ki estithi kya hogi

Posted by Sohail Ahmad 6 years, 1 month ago

CBSE > Class 10 > Science

0 answers

ANSWER

At what rate an event should be projected to have clear image

Posted by Anju Gupta 6 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Broken Soul 6 years, 1 month ago

24fps

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Yogita Ingle 6 years, 1 month ago

FPS is the frame rate per second which means the no. of images projected on the wall in just one second.

And 24 fps is the minimum frame rate per second that is required to see a proper event or video. This is the fps that a person can not see that the event or video is broken or in images. More than that fps shows a video or event which a human eye can not relate to an image

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Note of chapter 16

Posted by Sehbaz Dulli 6 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Dhwani Agrawal 6 years, 1 month ago

Can u please provide in detail

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Swathi Swathi 6 years, 1 month ago

Sustainable development and management

2Thank You

ANSWER

What do you mean by chemical equation

Posted by Ravi Partap Singh 6 years, 1 month ago

CBSE > Class 10 > Science

5 answers

Arun Baliyan 6 years, 1 month ago

when reactant and product are written with chemical formula instead of word are called chemical equation example MG + O2 = mgo

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Nanu Sharma 6 years, 1 month ago

The symbolic representation of chemical reactions is called a chemical equation

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Anshika Jain 6 years, 1 month ago

The representation of chemical reaction by using formulas and symbols involved in it is called chemical equation...

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Broken Soul 6 years, 1 month ago

I donr think such ques comes in xam?

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Broken Soul 6 years, 1 month ago

The represtation of chemical reaction in a word form is called chemical equation

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ANSWER

The resistivity of wire is directly proportional to cross sectional area? True or false

Posted by Cheeku 18 6 years, 1 month ago

CBSE > Class 10 > Science

13 answers

Nanu Sharma 6 years, 1 month ago

True

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Arun Baliyan 6 years, 1 month ago

False

1Thank You

Broken Soul 6 years, 1 month ago

Nhi aapka right tha

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Broken Soul 6 years, 1 month ago

Koi ni

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Broken Soul 6 years, 1 month ago

Sorry

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Broken Soul 6 years, 1 month ago

Haan

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Broken Soul 6 years, 1 month ago

Pgl yu mai bilkul ....sorry

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Broken Soul 6 years, 1 month ago

Ab smja

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Broken Soul 6 years, 1 month ago

Acchaaaa

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Broken Soul 6 years, 1 month ago

Resistivity to rho hai??

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Broken Soul 6 years, 1 month ago

Resistance hota h ... wo bhi inversely.. haina?

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Class 12 6 years, 1 month ago

False

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Broken Soul 6 years, 1 month ago

False ...

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How is copper extracted from the ore

Posted by Abhinav Pagaku 6 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 6 years, 1 month ago

(a) Roasting of sulphide ore:

2Cu₂S(s) + 3O₂(s) → 2Cu₂O(s) + 2SO₂(g)

(b) Reduction of copper (I) oxide with copper (I) sulphide:

2Cu₂O + Cu₂S → 6Cu(s) + SO₂(g)

This reaction is known as auto - reduction.

At anode : Cu²⁺(aq) + 2e^- → Cu(s)

At cathode : Cu(s) → Cu²⁺(aq)+ 2e^-

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What is the colour of iron and silver before and after rusting ??

Posted by Harjeet Kaur 6 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Harjeet Kaur 6 years, 1 month ago

What is the colour of iron snd silver before rusting .??

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Yogita Ingle 6 years, 1 month ago

Iron changes to → Reddish brown

Silver changes to → black

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What is representation of electron dot structure of nitrogen?

Posted by Dhruvil Bharucha 6 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Swathi Swathi 6 years, 1 month ago

Lewis structure is also known as electrons for dot structures

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Yogita Ingle 6 years, 1 month ago

Lewis structure is also known as electron dot structures, they show the bonding atoms in the molecule and the remaining lone pairs as dots. The Lewis structure of Nitrogen is shown below,

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Why a lemon kept in glass tumbler appear to be bigger in size when viewed from the sides

Posted by Aditi Goel 6 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Yogita Ingle 6 years, 1 month ago

Since water is more optically dense than air so light would bend towards the normal. Due to this different light rays meet above the actual position of the lemon. This refraction causes the bending of rays and results in the diverging image. Therefore the lemon appearsto be raised and slightly bigger.

1Thank You

Aditi Goel 6 years, 1 month ago

I want complete explanation

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Class 12 6 years, 1 month ago

Due to refraction of light

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What is solvay s process

Posted by Aahil Al Lmran Aahil 6 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Yogita Ingle 6 years, 1 month ago

The Solvay Process is a continuous process using limestone (CaCO₃) to produce carbon dioxide (CO₂) which reacts with ammonia (NH₃) dissolved in brine (concentrated NaCl(aq)) to produce sodium carbonate. The steps in the Solvay Process are: i. Brine Purification ii. Sodium Hydrogen Carbonate Formation iii. Sodium Carbonate Formation iv. Ammonia Recovery

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Class 12 6 years, 1 month ago

The process of making baking soda is known as solvay's process further by heating baking soda sodium carbonate is formed and then by adding 10 molecules of water of crystallization are added to it to form washing soda⚗

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What is solvay's process????

Posted by Class 12 6 years, 1 month ago

CBSE > Class 10 > Science

5 answers

Sowndaryaa Lakshmi V 6 years, 1 month ago

Hloo all

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Broken Soul 6 years, 1 month ago

Hi ekam

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Class 12 6 years, 1 month ago

Ook

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Aditi Goel 6 years, 1 month ago

The process of formation of baking soda is called solvay's process CO2+NH3+NaCl+H2O---------->NH4Cl+NaHCO3

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Class 12 6 years, 1 month ago

:::::::::::::::

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You are given a hammer,a battery a bulb,wires and a switch @ how could you use them to distinguish between samples of metals and non-metals? (b)Assess the usefulness of these tests in distinguishing between metals and non-metals.

Posted by Deepika Keshari 6 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 6 years, 1 month ago

(a) If the substance can be hammered to convert into sheets then it is metal if it is broken into pieces then it is non-metal. Set up the arrangement using bulb, battery, wire and switch as shown in figure. Place the substance between Point A and B if the bulb starts glowing then the substance is a Metal otherwise it is non-metal because metals are good conductor of electricity.

(b) Generally above methods can be used to identify metals and non-metals. But there are some exceptions also for example Sodium is metal which is not malleable in fact it is brittle. Graphite allotrope of non-metal carbon is a good conductor of electricity.

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What would be the advantages of exploiting resources with short term aim

Posted by Sourabh Lachheta 6 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Aadya Singh 6 years, 1 month ago

If the resources are exploited with short - terms aim,then the present generation will benefit too much. It would provide more food, water, and energy to all people in present generation..

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ANSWER

Activities answers of all chapters

Posted by Sangeeta Sachdev 6 years, 1 month ago

CBSE > Class 10 > Science

0 answers

ANSWER

Name one plant harmone,which inhibits growth.write its one more function.

Posted by Vivek Kumar Yadav 6 years, 1 month ago

CBSE > Class 10 > Science

5 answers

Chander Mohan Tiwari 6 years, 1 month ago

Absic acid

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Adi Karare 6 years, 1 month ago

Abscisic acid

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Priyanshu Jain 6 years, 1 month ago

Abscisic acid.

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Shraddha ☺️☺️ 6 years, 1 month ago

Its ABA acid or abcisic acid. Other functions- Promotes dormacy,closing of stomata,formation of abcission layer. Hope it helps!!

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Vivek Kumar Yadav 6 years, 1 month ago

Abscisic acid.it also causes dormancy in seeds.

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If a blurry image is formed from concave lens what should be do to obtain a clear image

Posted by Lucifer??Morningstar?? . 6 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Priyanshu Jain 6 years, 1 month ago

Move it.

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Why carbon compound have strong force of attraction although they are covalent compounds?

Posted by ]••´º´•» Ｄί?Ş?? «•´º´••[• 6 years, 1 month ago

CBSE > Class 10 > Science

6 answers

Sowndaryaa Lakshmi V 6 years, 1 month ago

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Shreya S❤ 6 years, 1 month ago

Actually covalent bonds are also very strong ... But weaker in comparison to ionic bonds.so,in our books covalent bonds are regarded weaker... But in actual they are only comparitively weaker.☺️

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Aadya Singh 6 years, 1 month ago

Because carbon is a small atom . Its nucleus has strong force of attraction which hold these bonds tightly together..

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Khushboo Singh 6 years, 1 month ago

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Khushboo Singh 6 years, 1 month ago

Hii diksha

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Khushboo Singh 6 years, 1 month ago

Carbon compounds are poor conductors of electricity because they form covalent bonds. ... Hence carbon compounds do not dissociate into ions and hence are poor conductors of electricity. Moreover, covalent bonds do not have strong forces of attraction. A covalent bond is also known as a molecular bond.

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How could i prepare for my exam to score 100 out of 100?

Posted by Raman Punj 6 years, 1 month ago

CBSE > Class 10 > Science