Incorrect URL accessed!!!!

ANSWER

explain the process of whitewashing

Posted by Dhrumil Suthar 5 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Adharsh Kannan 5 years, 4 months ago

During white washing, lime is dissolved in water and the slaked lime solution formed is applied on the walls and roofs. This slaked lime reacts slowly with carbon dioxide of air and forms a thin shining layer of calcium carbonate. CaO + H2O → Ca(OH)2 Ca(OH)2 + CO2 → CaCO3 + H2O

Yogita Ingle 5 years, 4 months ago

CaO + H₂O → Ca(OH)₂

Ca(OH)₂ + CO₂ → CaCO₃ + H₂O

ANSWER

Note on Myopia?

Posted by Saleel Nayak 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 4 months ago

Myopia

Near-sightedness : A person with Myopia can see nearby objects clearly
A person with myopia cannot see faraway objects clearly.
The far point for the myopic eye is nearer than infinity
Occurs due to
- Excessive curvature of the eye lens
- Elongation of eyeball
The image of a distance object is formed in front of the retina and not on the retina
Defected is corrected by using Concave lenses such that the lens will bring the image back on to the retina.

ANSWER

Aluminium wire has a radius 0.25mm and length 75m. If the resistance of the wire is 10ohm calculate the resistivity of aluminium

Posted by Amaldev. B. S 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 4 months ago

Resistivity = (R x A)/length
Radius = 0.25mm = 0.00025 m
length = 75m
Resistance = 10 ohms
Area of cross section = πr^2
= 22/7 x 0.00025 x 0.00025
Resistivity =
(10 x 22/7 x 0.00025 x 0.00025 ) ÷ 75
= (220/7 x 0.00025 x 0.00025)/75
= 2.63 x 10^(-8)ohmmeter

ANSWER

What are anticids? Explain their role in providing relief from stomach ache?

Posted by Anamika Chandel 5 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Amaldev. B. S 5 years, 4 months ago

Antacids are mild bases or remedy which neutralise the excess acid produced by the stomach. Role:this neutralise the excess acid produced by the stomach

Amrita Kumari 5 years, 4 months ago

This medication is used to treat the symptoms of too much stomach acid such as stomach upset, heartburn, and acid indigestion. It is also used to relieve symptoms of extra gas such as belching, bloating, and feelings of pressure/discomfort in the stomach/gut.

ANSWER

Physic problem

Posted by Pralhad Narote Pralhad Narote 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Ash Greninja 5 years, 4 months ago

Which question

ANSWER

A wire of length L and resistance R is stretched to get the radius of cross section halved . What is new resistance of the wire after stretching

Posted by Niharika Jorwal 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Amrita Kumari 5 years, 4 months ago

Since,cross section is halved then length will be doubled So,earlier R=p(rho)×l/a New will be R=p×2l/a/2 R=4p×l/a New resistance will be 4 times

3Thank You

ANSWER

Introducing a boy, a girl said, "He is the son of the daughter of the father of my uncle." How is the boy related to the girl?

Posted by Nidhi Girish 5 years, 4 months ago

CBSE > Class 10 > Science

3 answers

Amrita Kumari 5 years, 4 months ago

मौसेरा भाई

Ayush Pandey 5 years, 4 months ago

Cousin Brother

Kk Singh 5 years, 4 months ago

Cousin

ANSWER

What happens when two drops of

Posted by Mudkan Kanmud 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Mudkan Kanmud 5 years, 4 months ago

lala Lala lory pagal ho gyi chori

ANSWER

Draw a circuit diagram for circuit consist battery of 5 cells 2volt each , a 5 ohm ,10 ohm , 15 ohm an ammeter and plug key all connect in series. Also voltmeter to record potential differences across 15 ohm and calculate the electricity the passing through the above circuit potential differences 5 ohm when the key hold

Posted by Sri Vathsan 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Divija Bansal 5 years, 4 months ago

we cannot attach any image on mycbse

ANSWER

Fe2 O3 Plus Co give rise to Fe plus CO2

Posted by Pralhad Narote Pralhad Narote 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Tejasvini S 5 years, 4 months ago

Yes!

ANSWER

What will happen if we mix mercury with water..... Which substance will form ?

Posted by K A N A A D B U W A 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Niharika Raj 5 years, 4 months ago

Mercury does not react with water under normal conditions

ANSWER

In this app can we make a group to study with frnds. Plzz tell me

Posted by Sumaila Ali Choudhary??? 5 years, 4 months ago

CBSE > Class 10 > Science

5 answers

Sumaila Ali Choudhary??? 5 years, 4 months ago

Thnku to all

Ash Greninja 5 years, 4 months ago

But no we can't make a group. But we can try by requesting the mycbseguide to provide the option.

Ash Greninja 5 years, 4 months ago

Nice idea

Niharika Raj 5 years, 4 months ago

Ya nice idea

Sumaila Ali Choudhary??? 5 years, 4 months ago

How we can make a group to study in this app

3Thank You

ANSWER

Name the reactions in which acid react with base?

Posted by Maahi ......♾ 5 years, 4 months ago

CBSE > Class 10 > Science

5 answers

Maahi ......♾ 5 years, 4 months ago

Thanks everyone ?

Vraj Vaghela 5 years, 4 months ago

Neutralisation reaction

Ayushi Singh 5 years, 4 months ago

Neutralisation reaction

Satyam Lodhi Rajput 5 years, 4 months ago

Neutralisation reaction

Shivang The Chemistry Lover 5 years, 4 months ago

Neutralisation

ANSWER

Base should not be kept in active metal container.Why????

Posted by Maahi ......♾ 5 years, 4 months ago

CBSE > Class 10 > Science

4 answers

Adarsh Awasthi 5 years, 4 months ago

Because base will react with active metal to form hydrogen gas and salt

Amrita Kumari 5 years, 4 months ago

Because bases react with metal

Yogita Ingle 5 years, 4 months ago

Active metals often react with bases to form salts.

For example:

NaOH + Zn => NaOZn + H₂

Sodium hydroxide reacts with Zinc to form sodium zincate with liberation of H₂ gas.

Shivang The Chemistry Lover 5 years, 4 months ago

Because metals react with base to liberate hydrogen gas .

ANSWER

Which type of chemical compound found in citric fruits?

Posted by Maahi ......♾ 5 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Pratik Roy 5 years, 4 months ago

Citric acid Citric acid is a weak organic acid found in citrus fruits. It is a natural preservative and is also used to add an acidic (sour) taste to foods and soft drinks.

Maahi ......♾ 5 years, 4 months ago

"Its citrus not citric"?

ANSWER

How are the alveoli designed to maximise the exchange of gases ?

Posted by Maahi ......♾ 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 4 months ago

The human respiratory tract is made up of nostril, larynx, nasal chamber, pharynx, trachea, epiglottis, alveoli, bronchioles, bronchi and lungs. Within the lungs, the oxygen is exchanged for carbon dioxide waste through millions of microscopic sacs known as alveoli. The oxygen inhaled diffuses into the capillaries of the lungs, binds to the haemoglobin and is pumped into the bloodstream. The carbon dioxide from the blood diffuses through the alveoli and is expelled by exhalation.

The alveoli are thin-walled and richly supplied with a network of blood vessels to facilitate the exchange of gases between blood and the air-filled in alveoli. They have a balloon-like structure that provides maximum surface area for exchange of gases.

ANSWER

Give an example of exothermic reaction

Posted by Ashish Das 5 years, 4 months ago

CBSE > Class 10 > Science

3 answers

Adarsh Awasthi 5 years, 4 months ago

2Cu +o² --------- 2cuo +heat

Satyam Lodhi Rajput 5 years, 4 months ago

CaO + H2O = Ca(OH)2 + heat

Geeta Jadav 5 years, 4 months ago

Respiration and decomposition vegetables matter into compost are example of exothormic reaction Also,CH4+2O2-------CO2+2H2O

ANSWER

What is the GOS value

Posted by Abhinav Dumbre 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 1 month ago

In telecommunication engineering, and in particular teletraffic engineering, the quality of voice service is specified by two measures: the grade of service (GoS) and the quality of service (QoS).

Grade of service is the probability of a call in a circuit group being blocked or delayed for more than a specified interval, expressed as a vulgar fraction or decimal fraction. This is always with reference to the busy hour when the traffic intensity is the greatest. Grade of service may be viewed independently from the perspective of incoming versus outgoing calls, and is not necessarily equal in each direction or between different source-destination pairs. "Grade of Service" sometimes means a measure of inbound call center traffic to verify adherence to conditions to measure the success of customers served.

On the other hand, the quality of service which a single circuit is designed or conditioned to provide, e.g. voice grade or program grade is called the quality of service. Quality criteria for such circuits may include equalization for amplitude over a specified band of frequencies, or in the case of digital data transported via analogue circuits, may include equalization for phase. Criteria for mobile quality of service in cellular telephone circuits include the probability of abnormal termination of the call.

ANSWER

Acidic medium on scale

Posted by Suman Nokhwal 5 years, 4 months ago

CBSE > Class 10 > Science

4 answers

Adarsh Awasthi 5 years, 4 months ago

0 to 6 Ph

Satyam Lodhi Rajput 5 years, 4 months ago

0 to 6

Shivang The Chemistry Lover 5 years, 4 months ago

0 to 7

Geeta Jadav 5 years, 4 months ago

On pH scale acidic medium is 0 to 6

ANSWER

Electonic concept of redox reaction???

Posted by Disha Agarwal 5 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Shivang The Chemistry Lover 5 years, 4 months ago

Oxidation is loss of electrons Reduction is the gain of electrons

Abhinav Dumbre 5 years, 4 months ago

you should find yourself

3Thank You

ANSWER

If their is gravity then why we need peristalsis to slide food???

Posted by Disha Agarwal 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Divija Bansal 5 years, 4 months ago

The force of gravity will push the food very slowly. Peristalsis is there to accelerate the movement

ANSWER

What is colour of washing soda

Posted by Disha Agarwal 5 years, 4 months ago

CBSE > Class 10 > Science

5 answers

Ayushi Singh 5 years, 4 months ago

White

Satyam Lodhi Rajput 5 years, 4 months ago

White

Pratik Roy 5 years, 4 months ago

White

Geeta Jadav 5 years, 4 months ago

White

Punna <3 5 years, 4 months ago

White??

ANSWER

Are all salts crystallised??? What is the nature of baking powder???

Posted by Disha Agarwal 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Pranjal Vishnoi 5 years, 4 months ago

Acidic

ANSWER

What is the nature of saliva?? which gland release pepsin?? Which ducts transport bile from liver to gall bladder???

Posted by Disha Agarwal 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

#?Abhishek...? . 5 years, 4 months ago

The pH value of resting whole saliva is slightly acidic, which varies between pH 5.75 and 7.05, and it increases with increasing flow rate up to pH 8. Besides flow rate, the pH also depends on the concentration of salivary proteins, bicarbonate and phosphate ions that have considerable buffering capacity. Pepsin is an endopeptidase that breaks down proteins into smaller amino acids. It is produced in the chief cells of the stomach lining and is one of the main digestive enzymes in the digestivesystems of humans and many other animals, where it helps digest the proteins in food.

ANSWER

What is refraction science ch 10

Posted by John Vankar 5 years, 4 months ago

CBSE > Class 10 > Science

3 answers

Amrita Kumari 5 years, 4 months ago

refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium.

Pranjal Vishnoi 5 years, 4 months ago

Deflection of light from one medium to another medium

Sparsh Garg 5 years, 4 months ago

The deflection of light during movement of light from one medium to another

ANSWER

What happens to the Crystal of washing soda when exposed to air??

Posted by Maahi ......♾ 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 4 months ago

When sodium carbonate crystals are exposed to air They lose water of crystallization and turn to white powder. This process of loosing water of crystallization when exposed to air is called efflorescence.