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What is chemistry equation

Posted by Faisal Qureshi 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Raushan Kumar 5 years, 10 months ago

A chemical equation is a representation of any reaction with the help of formula and symbols

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Nayif Shanavas 5 years, 10 months ago

A chemical equation is the representation of a chemical reaction held through its chemical formulae. In a chemical equation the LHS and RHS must be equal in its molecular mass under the law of conservation of mass

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What is efflorescence ?

Posted by Bhavya Syal 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Efflorescence is the spontaneous loss of water by a hydrated salt, which occurs when the aqueous vapor pressure of the hydrate is greater than the partial pressure of the water vapour in the air.

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ANSWER

how about the image formed by spherical mirror

Posted by Sarika Nagar 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Image formation by Spherical Mirrors:The nature, position and size of the image formed by a concave mirror depends on the position of the object in relation to points P, F and C. The image formed is real for some positions of the object. It is found to be a virtual image for a certain other position. The image is either magnified, reduced or has the same size, depending on the position of the object.

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Which stakeholder cause maximum damage to forest

Posted by Prabal Das 5 years, 10 months ago

CBSE > Class 10 > Science

8 answers

Dr. Sanskari ?‍⚕️?‍⚕️ 5 years, 10 months ago

And except tribal people.....

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Dr. Sanskari ?‍⚕️?‍⚕️ 5 years, 10 months ago

All human beings except animals ????

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?? Thakur 06 ???? 5 years, 10 months ago

Industrialist .

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Vanshika . 5 years, 10 months ago

Industrialists and tribal people

2Thank You

Bhavya Syal 5 years, 10 months ago

The industrialist

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Aadya Singh 5 years, 10 months ago

I think industrialist ?

3Thank You

Prabal Das 5 years, 10 months ago

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Shreya .... 5 years, 10 months ago

Human being living near the forest.

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ANSWER

Reaction of sodium with nitric acid

Posted by Heayansh Star World 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Prabal Das 5 years, 10 months ago

Na+HNO3=NaNO3+N2O\NO2+H2O

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Aadya Singh 5 years, 10 months ago

Sodium nitrate is formed and hydrogen gas released...

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ANSWER

Why tooth decay begin when the pH is less than 5.5 ?

Posted by Vivek Kumar 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Ghanshyam Singh 5 years, 10 months ago

Because when pH is less than 5.5 than it means that there is Excess acid level in our mouth and because of Excess acid our teeths starts decaying

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Seema Yadav 5 years, 10 months ago

Blood

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What is eflorance

Posted by Bhuvan Chandra Joshi 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Parvathy Parvathy 5 years, 10 months ago

Efflorescence is a crystalline deposit of salts that can form when water is present in or on brick, concrete, stone, stucco or other building surfaces

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ANSWER

How synapse act as one way valves ?

Posted by ?? Thakur 06 ???? 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Shreya .... 5 years, 10 months ago

<I>Synapses act like one way valves because the neurotransmitter is present only on one side of the gap. Due to this reason, the nerve impulses through a particular set of neurons can go across only from one side.

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Efficiency of modern solar cells is

Posted by Sparsh Mittal 5 years, 10 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

What are the physical and chemical propertis of carbon

Posted by Pushpender Singh 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Kajal Shiv Shankar 5 years, 10 months ago

It has very low melting and boiling point. It have very low intermolecular force It is poor conductor of heat and electricity

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ANSWER

What are physical and checal propertis of carbon

Posted by Pushpender Singh 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Physical Properties of Carbon:
i. It is soft and dull grey or black in color.
ii. One of the most important compounds of carbon is the charcoal, which is formed when carbon is heated in the absence in of air.
iii. It occurs in a number of allotropic forms. Allotropes are nothing but forms of an element with varying physical as well as chemical properties.
iv. The density of the different forms of carbon depends upon the origin of these elements.
Chemical Properties of Carbon:
Carbon compounds generally show 4 reactions, they are
i. Combustion reaction
ii. Oxidation reaction
iii. Addition reactions
iv. Substitution reaction.

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The image od an object formed by a lens is of magnification -1. If the distance between the object and its image is 60cm, what is the focal length ot the lens? If the object is moved 20 cm towards the lens, where wouls the image be formed? State reason and also draw a ray diagram in support of your answer.

Posted by Uma T 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Raunak Chauhan 5 years, 10 months ago

The lend used in is convex lens and the magnificent-1 tells that image at 2F' and object at 2F . So 2F =2F' from optical center So image and object distance from optical center is 30cm and focal length is 15cm In case 1 image is real and inverted When object move 20cm toward image mature began:in front of lens beyond pricipal axis and vitual and erect

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

focal length = 15
when object moved at 20 cm , image is formed in same direction from the lens as object and its virtual n erect

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ANSWER

Difference between soap and deterrent

Posted by Shrishti Khare 5 years, 10 months ago

CBSE > Class 10 > Science

3 answers

Kajal Shiv Shankar 5 years, 10 months ago

Soap is a sodium and potassium salt of long carboxylic acid Where is detergent is illuminate and sulphonate salt of long carboxylic acid Soap is effective in soft water only Detergent is effective in both soft water and hard water

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rktp****@***** 5 years, 10 months ago

And detergent is used for removing the hardness of water and soap cannot do this

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

soap is biodegradable detergent is not
soap cannt act in hard water as it forms scum while detergent can

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ANSWER

Are activities given in ncert important of science ??

Posted by Pata Nahi 5 years, 10 months ago

CBSE > Class 10 > Science

6 answers

Bhuvan Chandra Joshi 5 years, 10 months ago

Yes, anyone of them can came in exam

1Thank You

rktp****@***** 5 years, 10 months ago

Yes,not be doubted

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

yes why not

1Thank You

Yumnam Apanba 5 years, 10 months ago

Yes, some have came in exam also

1Thank You

Killer Gaming 5 years, 10 months ago

Yes

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Diksha ? 5 years, 10 months ago

Yesss, spcly in chem...

2Thank You

ANSWER

What is the function of copper t

Posted by Aadesh Saini 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Jasspreet Kaur 5 years, 10 months ago

Copper t is safely placed in uterus and does not let ovary to reach egg to sperms

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Diksha ? 5 years, 10 months ago

Copper t stops the growth of embroy by destroying it

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ANSWER

Transportation is a necessary evil.Jusyify.

Posted by Kavitha M V 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Avika Goel 5 years, 10 months ago

Transpiration is a necessary evil As allows plant to release off excess of water

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ANSWER

describe the process of electrolytic refining of copper?

Posted by Smriti Verma 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Peeyush Mittal 5 years, 10 months ago

Electrolytic refining is a process of purification of metals which are highly reactive in nature . For example: sodium , magnesium, aluminum etc. So basically in this process, 1.The impue metal is made the anode and the pure metal is made the cathode. 2. A solution of metal salt is used as electrolyte (in aqueous form) in which small amount of acid is mixed 3. On passing the current the pure metal from the anode dissolves in the electrolyte and gets deposited on cathode (because metals are electopositive as they form +ve ions so the attracts the -ve electrode and depositd on it) 4.The impurities go into the solution and settle down at the bottom of anode and are called anode mud. I hope you understood all this process Thanks

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ANSWER

How do organisum Re prudes

Posted by Chandrakala Bn 5 years, 10 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Name two industries based on forest produce?

Posted by Naman Jangra 5 years, 10 months ago

CBSE > Class 10 > Science

3 answers

Kajal Shiv Shankar 5 years, 10 months ago

Two industries based on forest produces are furniture industry and textile industry

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Prafull Khati 5 years, 10 months ago

Bidi and paper industry

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G Kaur 5 years, 10 months ago

Pulp and paper industries,Match industries,Timber and sawn wood industries,Plywood industries..

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ANSWER

How will yoy create an artificial aquatic ecosystem which is self sustainable?

Posted by Kavitha M V 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

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

aquarium not pond or lake because the latter are natural ecosystems

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Rohit Beeravalli 5 years, 10 months ago

Like aquarium, pond, lake etc

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ANSWER

An iron strip dipped in a blue copper sulphate solution turns the blue solution pale green.give reason.

Posted by Kavitha M V 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Hani Hk 5 years, 10 months ago

It is due to the displacement reaction where a higher reactive metal displaces the least reactive one similarly Fe is more reactive than Cu thus displaces it

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Lucifer??Morningstar?? . 5 years, 10 months ago

In this reaction iron displace copper from its salt solution.so the colour of solution change from blue to pale green

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Calcium does not occur in free state in nature.give reason.

Posted by Kavitha M V 5 years, 10 months ago

CBSE > Class 10 > Science