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What happen when we heat the silvercloride

Posted by Rajendra Singh Rawat 5 years, 10 months ago

3 answers

Nitesh Verma 5 years, 10 months 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 5 years, 10 months 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??⚜ 5 years, 10 months ago

Decomposition I think...

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ANSWER

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

Posted by Aadya Singh 5 years, 10 months ago

CBSE > Class 10 > Science

16 answers

Aadya Singh 5 years, 10 months ago

Hii sowndaryaa ?

1Thank You

Sowndaryaa Lakshmi V 5 years, 10 months ago

Hi aadya sis. Hiii buddy?

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Aadya Singh 5 years, 10 months ago

Bye??

2Thank You

⚜??Worst Buddy??⚜ 5 years, 10 months ago

2Thank You

Aadya Singh 5 years, 10 months ago

Oh ????

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⚜??Worst Buddy??⚜ 5 years, 10 months ago

Bina emoji k aapke msges fike lgte hai

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⚜??Worst Buddy??⚜ 5 years, 10 months ago

Hua*

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⚜??Worst Buddy??⚜ 5 years, 10 months ago

Aapko kya hia aadu?

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Aadya Singh 5 years, 10 months ago

Nah..

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⚜??Worst Buddy??⚜ 5 years, 10 months ago

Vese aapki shreya se baat hui?

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⚜??Worst Buddy??⚜ 5 years, 10 months ago

Arre yrr pdna padega lgta hai

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Nitesh Verma 5 years, 10 months 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 5 years, 10 months ago

Bio chapter - heredity and evolution me h...

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⚜??Worst Buddy??⚜ 5 years, 10 months ago

Naam suna suna lagra hai?

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⚜??Worst Buddy??⚜ 5 years, 10 months ago

Darwin kaun hai yll?

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Diahant Kumar 5 years, 10 months ago

What

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ANSWER

write chemical properties of metal and nonmetal

Posted by Jagruti Jagruti 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 10 months 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 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Akash Rai 5 years, 10 months 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 5 years, 10 months 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 5 years, 10 months ago

CBSE > Class 10 > Science

3 answers

Aadya Singh 5 years, 10 months ago

Baking soda..

1Thank You

⚜??Worst Buddy??⚜ 5 years, 10 months ago

Baking soda

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⚜??Worst Buddy??⚜ 5 years, 10 months ago

Sodium bicqrbonate

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How can we define 1 diopter

Posted by Dhwani Agrawal 5 years, 10 months ago

CBSE > Class 10 > Science

3 answers

Akash Rai 5 years, 10 months 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 5 years, 10 months ago

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

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Yashank Kumar 5 years, 10 months 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 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Yashank Kumar 5 years, 10 months 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 5 years, 10 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

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

Posted by Anju Gupta 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Broken Soul 5 years, 10 months ago

24fps

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Yogita Ingle 5 years, 10 months 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 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Dhwani Agrawal 5 years, 10 months ago

Can u please provide in detail

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Swathi Swathi 5 years, 10 months ago

Sustainable development and management

2Thank You

ANSWER

What do you mean by chemical equation

Posted by Ravi Partap Singh 5 years, 10 months ago

CBSE > Class 10 > Science

5 answers

Arun Baliyan 5 years, 10 months 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 5 years, 10 months ago

The symbolic representation of chemical reactions is called a chemical equation

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Anshika Jain 5 years, 10 months ago

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

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Broken Soul 5 years, 10 months ago

I donr think such ques comes in xam?

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Broken Soul 5 years, 10 months 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 5 years, 10 months ago

CBSE > Class 10 > Science

13 answers

Nanu Sharma 5 years, 10 months ago

True

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Arun Baliyan 5 years, 10 months ago

False

1Thank You

Broken Soul 5 years, 10 months ago

Nhi aapka right tha

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Broken Soul 5 years, 10 months ago

Koi ni

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Broken Soul 5 years, 10 months ago

Sorry

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Broken Soul 5 years, 10 months ago

Haan

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Broken Soul 5 years, 10 months ago

Pgl yu mai bilkul ....sorry

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Broken Soul 5 years, 10 months ago

Ab smja

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Broken Soul 5 years, 10 months ago

Acchaaaa

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Broken Soul 5 years, 10 months ago

Resistivity to rho hai??

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Broken Soul 5 years, 10 months ago

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

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Class 12 5 years, 10 months ago

False

1Thank You

Broken Soul 5 years, 10 months ago

False ...

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ANSWER

How is copper extracted from the ore

Posted by Abhinav Pagaku 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 10 months 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 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Harjeet Kaur 5 years, 10 months ago

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

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Yogita Ingle 5 years, 10 months 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 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Swathi Swathi 5 years, 10 months ago

Lewis structure is also known as electrons for dot structures

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Yogita Ingle 5 years, 10 months 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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ANSWER

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

Posted by Aditi Goel 5 years, 10 months ago

CBSE > Class 10 > Science

3 answers

Yogita Ingle 5 years, 10 months 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 5 years, 10 months ago

I want complete explanation

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Class 12 5 years, 10 months ago

Due to refraction of light

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What is solvay s process

Posted by Aahil Al Lmran Aahil 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Yogita Ingle 5 years, 10 months 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 5 years, 10 months 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 5 years, 10 months ago

CBSE > Class 10 > Science

5 answers

Sowndaryaa Lakshmi V 5 years, 10 months ago

Hloo all

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Broken Soul 5 years, 10 months ago

Hi ekam

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Class 12 5 years, 10 months ago

Ook

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Aditi Goel 5 years, 10 months 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 5 years, 10 months 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 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 10 months 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 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Aadya Singh 5 years, 10 months 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 5 years, 10 months 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 5 years, 10 months ago

CBSE > Class 10 > Science

5 answers

Chander Mohan Tiwari 5 years, 10 months ago

Absic acid

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Adi Karare 5 years, 10 months ago

Abscisic acid

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Priyanshu Jain 5 years, 10 months ago

Abscisic acid.

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Shraddha ☺️☺️ 5 years, 10 months 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 5 years, 10 months 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?? . 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Priyanshu Jain 5 years, 10 months 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´••[• 5 years, 10 months ago

CBSE > Class 10 > Science

6 answers

Sowndaryaa Lakshmi V 5 years, 10 months ago

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Shreya S❤ 5 years, 10 months 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 5 years, 10 months 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 5 years, 10 months ago

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Khushboo Singh 5 years, 10 months ago

Hii diksha

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Khushboo Singh 5 years, 10 months 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 5 years, 10 months ago

CBSE > Class 10 > Science