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why are solids rigid

Posted by Suman Yadav 4 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Navneet Kumar 4 years, 2 months ago

Because there is less intercellular space between the molecules and high atrraction between the molecules

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ANSWER

activity 1.1 explanation class 10 science

Posted by Keerthana Balaji 4 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Srinidhi S P 4 years, 2 months ago

This activity is about burning a magnesium ribbon . If you burn a magnesium ribbon you can identify that there will be a white flame produced and a white product (MgO) . This is a activity to explain that a chemical reaction takes place when there is a chance in state , temperature,colour and evolution of gas . Here, the identification property is white dazzling flame . Equation :- 2Mg + O2 = 2MgO Note :- 1) scratch the magnesium ribbon with sand paper before burning because there is a layer of MgO ( magnesium oxide ) over it which prevents further reaction . 2) wear a sunglass before you do this experiment to not affect your eyes while burning .

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What is opticle centre

Posted by Sumit Kumar 4 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Simranjeet Kaur 4 years, 2 months ago

The centre point on lens is known as optical centre

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Anshul Reep 4 years, 2 months ago

Optical centre is the centre of a lens

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Moksh Yadav 4 years, 2 months ago

The center of a lens is called its optical center

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Srinidhi S P 4 years, 2 months ago

The centre point of the lens . Which lies on principal axis on the surface of the lens .

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Diya Patel 4 years, 2 months ago

Centre of lens of which it is part of

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How to make portfolio ? Any sample please

Posted by Divyanshi Saini 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Srinidhi S P 4 years, 2 months ago

You can see it in youtube

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Diya Patel 4 years, 2 months ago

Which type

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Chapter 6 Notes Exercise QUESTIONS Answer

Posted by Aditya Raj 4 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Jiya Singh 4 years, 2 months ago

Go in mycbseguid and find it

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What is filament

Posted by Sufaidha 105 4 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Sumit Yadav 4 years, 2 months ago

filament is a conducting wire with a high melting point, forming part of an electric bulb or thermionic valve and heated by an electric current.

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Partial break down of Glucose molecule into

Posted by Md Faizan Raza 4 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Sia ? 4 years, 2 months ago

Glucose is a six carbon sugar. In glycolysis, glucose is split into two three-carbon molecules called pyruvate.

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What is animal

Posted by Anitha Sreedevi 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Sia ? 4 years, 2 months ago

An animal is a living thing that can move and breath. There are different types of animal such as lion, goat, sheep, etc.

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Jiya Singh 4 years, 2 months ago

Animal is a living things. Ex- human,tiger

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About heart

Posted by Anjali Kumari 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Swati Chauhan 4 years ago

Heart acts as a pump which pumps blood all over the body.

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Md Faizan Raza 4 years, 2 months ago

Heart is specific organ which is crucial role in our body

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ANSWER

Sodium carbonate is formed when___Acid and___base react with each other? a) HCI, NaOH (b) H₂CO3, NaOH (c) H3PO3, CaSO4 (+d) H₂SO4, CaSO4

Posted by Moksh Yadav 4 years, 2 months ago

CBSE > Class 10 > Science

4 answers

Naina Gupta 4 years, 2 months ago

H2co3 acid and NaoH base

1Thank You

Sumit Kumar 4 years, 2 months ago

1Thank You

Vivek Yadav 4 years, 2 months ago

2Thank You

Saksham Mishra 4 years, 2 months ago

B is correct

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When potassium permanganate is heated, it produces potassium. reaction. manganate, manganese dioxide and oxygen gas. This is an example of A) Exothermic A) 8) Electrolytic C) Endothermic DjElectrochemical

Posted by Nitin Kumar 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Lakshya Raj 4 years, 2 months ago

as the heat is released it is exothermic

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Garvit Gehlot 4 years, 2 months ago

{[(D)]}

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Posted by Nitin Kumar 4 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Jio N T 4 years, 2 months ago

Exothermic

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Fe2(SO4)3 + KOH - KE SO4 + Fe(OH)3. Balance the chemical equation

Posted by Paullomi Sarkar 4 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Sia ? 4 years, 2 months ago

Fe₂(SO₄)₃ + 6KOH → 3K₂SO₄ + 2Fe(OH)₃

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Acid,base,salt

Posted by Navjot Nirmaan 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Sia ? 4 years, 2 months ago

In acid – base chemistry, salts are ionic compounds that result from the neutralization reaction of an acid and a base. Basic salts contain the conjugate base of a weak acid, so when they dissolve in water, they react with water to yield a solution with pH greater than 7.0.

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Bhavesh Bairwa 4 years, 2 months ago

What happens when dilute hydrochloric acid is added to iron fillings tick the correct answer

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Prove mirror formula(1/f-1/v=1/u)

Posted by Rashmi Sah 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Aaira Batool 4 years, 2 months ago

1/f -1/v=1/u Proof:1/r/2-1/v=1/u 2/r =1/u+1/v

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Ayush Mishra 4 years, 2 months ago

Mujhe nahi pata

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Give 10 disadvantages of base

Posted by Toshik 003 4 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Sia ? 4 years, 2 months ago

The base may cause irritation in the skin.
Bases can corrode porcelain and glass.
The base solution if accidentally splash over eye can cause permanent blindness.
The fumes coming out from the reaction with base may cause respiratory problems.
Some bases can be poisonous to humans.

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ANSWER

Summary with simple points for the lesson "Acid Bases and Salts"

Posted by Geetha Sri 4 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Sumit Kumar 4 years, 2 months ago

Acid (1.)it is sour in taste. (2.)turns blue litmus red. (3.)high concentration of hydronium(H+) ions. (4.)example-hydrochloric acid(HCL), sulphuric acid(H2SO4). ?????????? Base (1.) It is bitter in taste. (2.) Turns red litmus blue. (3.) High concentration of hydroxide(OH-) ions. (4.) Example-sodium hydroxide (NAOH) , potassium hydroxide (KOH) . ???? Thank you.

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What is E yatra.com

Posted by Sania Mirza 4 years, 2 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Write a chemical reaction for the following equations 1. Sodium nitrate +aluminium +sodium hydroxide +water

Posted by Nandani️ Chaudhary 4 years, 2 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Define organic compound.

Posted by Aditi Chauhan 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Sia ? 4 years, 2 months ago

The compound in solid, liquid or gaseous state which contain carbon in its molecule known as organic compound.

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Govind Agrawal 4 years, 2 months ago

The compund that are organic are called organic compounds.

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ANSWER

What is epidemics

Posted by Om Sonar 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Aishwarya Bagde 4 years, 1 month ago

Example: Covid -19

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Navie •_• 4 years, 2 months ago

When a disease got spread in a rapid way to a large population within a short period of time, then it's called as the epidermic

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Difference between aerobic and Anorobic respiration

Posted by Deepak Singh 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Sia ? 4 years, 2 months ago

Aerobic Respiration	Anaerobic Respiration
a) It occurs in the presence of oxygen	a) It occurs in the absence of oxygen
b) It occurs in cytoplasm and in the mitochondria	b) It occurs in cytoplasm
b) Complete breakdown of glucose occurs	c) Incomplete breakdown of glucose occurs
d) End products are CO₂ and H₂O	d) End products are CO₂ and ethyl alcohol or lactic acid
e) Amount of energy produced is more.	e) Amount of energy produced is less.

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☆ Pranal Rewatkar ☆ 4 years, 2 months ago

Aerobic Respiration Anaerobic Respiration a) It occurs in the presence of oxygen a) It occurs in the absence of oxygen b) It occurs in cytoplasm and in the mitochondria b) It occurs in cytoplasm b) Complete breakdown of glucose occurs c) Incomplete breakdown of glucose occurs d) End products are CO2and H2O d) End products are CO2 and ethyl alcohol or lactic acid e) Amount of energy produced is more. e) Amount of energy produced is less.

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Formula of slake lime

Posted by Sandeep Kr. Singh 4 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Sumit Kumar 4 years, 2 months ago

(CAOH2)

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Govind Agrawal 4 years, 2 months ago

Ca(OH)² or calcium hydroxide

1Thank You

Sania Mirza 4 years, 2 months ago

Calcium hydroxide

1Thank You

Yash Agarwal 4 years, 2 months ago

Calcium hydroxide

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Navie •_• 4 years, 2 months ago

Ca(OH)² is the formula for slake lime

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ANSWER

Why should we have to balance the chemical equation?

Posted by Naitik Shukla 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Govind Agrawal 4 years, 2 months ago

Law of conservation of mass ka मान रखने के लिए।

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Sandeep Kr. Singh 4 years, 2 months ago

To satisfy the law of conservation of mass

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Sodium and chlorinearereactantsandasaresultsodiumchlorine is formedwhichisalsocalledtablesalt.whatoptionsgivesthereactantandproductofthereaction

Posted by Mukesh Mukesh 4 years, 2 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Which method is called hit and trial method??

Posted by Himanshu Rathee 4 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Sumit Kumar 4 years, 2 months ago

The method used to balance a skeletal/unbalanced chemical equation to satisfy law of conservation of mass is called HIT AND TRIAL METHOD OF BALANCING A CHEMICAL EQUATION.

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Govind Agrawal 4 years, 2 months ago

The method that we normally use to balance chemical equations.

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Mahi Jain 4 years, 2 months ago

Equation balancing mathod

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Mcq of life processes

Posted by Mn Ok 4 years, 2 months ago

CBSE > Class 10 > Science