CBSE > Class 10 > Science | CBSE Board | Homework Help | myCBSEguide

No products in the cart.

Ask questions which are clear, concise and easy to understand.

Ask Question

Explain why plaster of paris should be stored in a moisture proof container ?

Posted by Satyam Kumar Roy 2 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Aditya Anand 2 years, 3 months ago

Plaster of paris should be stored in moisture proof container because when it comes to the contact of moisture, it reacts to form solid hard mass (as formation of gypsum).

Shahid Ansari 2 years, 3 months ago

Shahid

ANSWER

Who invent pH scale

Posted by Shanvi Swaraj Yadav😎 2 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Himanshu Kumar 2 years, 3 months ago

Dr. Soren Sorenson in 1909

Aditya Anand 2 years, 3 months ago

Dr. S. Sorenson

Pavitra Mandal 2 years, 3 months ago

Dr. Soren Sorensen

ANSWER

What happen when electricity is passed through aqueous solution of sodium chloride

Posted by Praveen Jangid 2 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Ankit Kumar 2 years, 3 months ago

When electricity is passed through aqueous solution of sodium chloride, due to electrical decomposition reaction Na+ at cathode and Cl- at anode is separated from the solution.

Himanshu Kumar 2 years, 3 months ago

When Nacl react with water then it decomposes into Sodium hydroxide and Hydrogen and chlorine gas

Molisha Goel 2 years, 3 months ago

It decomposes to form sodium hydroxide (NaOh)

ANSWER

The refractive index of a medium X with respect to Y is 2/3 and refracting index of Y with respect to Z is 4/3 calculate reflective index of Z with respect to X if the speed of light in medium X is 3 into 10 to the power 8 M per second and also calculate speed of light in medium Y

Posted by Sãtyãm Kümär 2 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Gaurav Kumar 2 years, 2 months ago

0.5

ANSWER

A convex lens forms a virtual image when an object is placed at a distance of 18 cm from it.the focal length must be-

Posted by Utkarsh Kumar 2 years, 3 months ago

CBSE > Class 10 > Science

5 answers

Gaurav Kumar 2 years, 2 months ago

Between f1 and centre of optical

Nayan Saxena 2 years, 3 months ago

Ayush raj brother, Its mu humble request please give explanation of this answer that why it must be greater than 18

Aayush Raj 2 years, 3 months ago

Greater than +18cm

Mohammad Nusratullah Jamshaid Jamshaid 2 years, 3 months ago

I think it's a numerical question and first of all we remember the formula ok so good by

Mohammad Nusratullah Jamshaid Jamshaid 2 years, 3 months ago

I don't now because I become new student of class 10 ok so sorry byy

ANSWER

Metal compund A reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candel. Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride.

Posted by Eklavya Singhal 2 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Prince Singh Al 2 years, 3 months ago

Hydrogen gas

Himanshu Kumar 2 years, 3 months ago

When Calcium carbonate reacts with dilute HCl then it forms calcium chloride Carbon dioxide and water Caco3+2HCl = CaCl2+Co2+H2o

ANSWER

Digestion in human being

Posted by Vaibhav Yadav 2 years, 3 months ago

CBSE > Class 10 > Science

4 answers

Nirmala Mishra 2 years, 3 months ago

Reflex action is the sudden reaction

Nirmala Mishra 2 years, 3 months ago

Digestion start with mouth ,buccal cavity, oesophagus,stomach where HCl and pepsein digested the food and mucus protect stomach from acid ,small intestine complete digestion of food with help of pancreatic juice ,bile juice,and some other small intestine juices,then it goes to lare intestine where absorption of salt and water and leftover food and waste material excret through ****

Shivam Kumar 2 years, 3 months ago

What is riflex action

Anand Yadav 2 years, 3 months ago

Hi

ANSWER

Bliching powder and it's use

Posted by Mohd Aatif 2 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Prince Singh Al 2 years, 3 months ago

Bleaching powder formula cl2 it is used for bleach the hair and used in a laundry it used used for disinfacting drinking water it is strong oxidizing agent

Himanshu Kumar 2 years, 3 months ago

Bleaching powder (CaoCl2) also known as Calcium oxychloride it uses in dry cleaners to remove colour of clothes

Eklavya Singhal 2 years, 3 months ago

Bleaching powder is mainly used as bleaching agent for cotton, linen and wood pulp. It is used oxidizing agent in chemical industry. It is used for disinfecting drinking water.

ANSWER

How is our heart working

Posted by Abhay Pratap 2 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Ankit Kumar 2 years, 3 months ago

First of all the oxygenated blood came into left atrium from the lungs through pulmonary vein then it goes into left ventricle where it relaxes and after that left ventricle contracts the blood is supplied in our whole body through aorta. . Deoxygenated blood came into the right atrium from , superior vena cava and inferior venacava through pulmonary artery then it goes into right ventricle, right ventricle contracts the blood goes into the lungs.

Eklavya Singhal 2 years, 3 months ago

The right ventricle pumps the low-oxygen blood to the lungs to pick up a fresh supply of oxygen. The left atrium receives to high-oxygen blood from the lungs and pumps it to the left ventricle. The left ventricle pumps the high-oxygen blood to the rest of the body.

Sakshi Pandey 2 years, 3 months ago

Through there 4part of partitions

ANSWER

Lijd

Posted by Garvit Sharma 2 years, 3 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Draw a 16 ray diagram

Posted by Bishal Das 2 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Elisha Patnala 2 years, 3 months ago

Ya

Elisha Patnala 2 years, 3 months ago

U need raj diagram. Explain

ANSWER

The process by which plant take water from roots

Posted by Aryan Kushwah 2 years, 3 months ago

CBSE > Class 10 > Science

5 answers

Mohit Gothwal 2 years, 3 months ago

Osmosis

Prince Singh Al 2 years, 3 months ago

Osmosis

Mohammad Nusratullah Jamshaid Jamshaid 2 years, 3 months ago

Yes absolutely,because osmosis is the process in which plant take water from roots

Swati And Prachi Jamwal 2 years, 3 months ago

Osmosis

Kaushal Karan 2 years, 3 months ago

Osmosis

ANSWER

what is the magnification of the image formed by the plane mirror and why

Posted by Chinmayanand A Benal 2 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Tanishka Maurya 2 years, 3 months ago

The magnification if image formed by plane mirror is +1 as the image formed is of same size . So according to the magnification formula wr get the answer as+1.

Aryan Kushwah 2 years, 3 months ago

+1

Chinmayanand A Benal 2 years, 3 months ago

urgently send pls

ANSWER

What is CaO

Posted by Abhinav Kumar Bakshi 2 years, 3 months ago

CBSE > Class 10 > Science

5 answers

Lucky Singh Lucky Singh 2 years, 3 months ago

Calcium oxide

Musaddique Khan 2 years, 3 months ago

Calcium oxide

Subudhi Yoshita 2 years, 3 months ago

Calcium oxide

Mayank Saarthak 2 years, 3 months ago

Calcium oxide

Sharky Gaming 2 years, 3 months ago

Calcium oxide

ANSWER

A ready show reddish brown metal X when heated in a presence of oxygen formed a black compound by which is basic in nature and heated by hydrogen gas identify x and y and identify the substance being oxidized and read

Posted by Sahana Sahana 2 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Musaddique Khan 2 years, 3 months ago

The substance x is copper . On heating in air , it form copper Oxide Y.

ANSWER

In which of the following groups of organisms food material is broken outside the body and absorbed

Posted by Alisha Patel 2 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Shruti Tiwari 2 years, 3 months ago

Saprophytic nutrition

Jyoti Yaragal 2 years, 3 months ago

Saphrophytic nutrition

ℙ𝕠𝕠𝕛𝕒 𝔹𝕒𝕟𝕟𝕦𝕣 2 years, 3 months ago

Saprofytic organisms

ANSWER

School

Posted by Harish Chandra Pant 2 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Prathamesh Thakur 2 years, 3 months ago

School is a place where we get knowledge

ANSWER

Define work

Posted by Priyanka S H 2 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Redmi Eedmi 2 years, 3 months ago

Work is said to be done if force is applied and object it's direction

ANSWER

2. The image shows the healing of a wound. Based on the image, what explains the process? Fibrin polymers Platelet Red blood cells Blood vessel wall- Connective tissue (a) blood platelets form clot by plugging the site of injury (b) wbc uses component of broken vessel to form clot (c) red blood cells divide and replace the broken vessel at the site of injury (d) red blood cells and platelets migrate to site of injury and secrete substance that forms new vessel

Posted by Shivathmika Adimula 2 years, 3 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

What is v

Posted by Surendra Soren 2 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Daksh Verma 2 years, 3 months ago

It's image distance

Ankit Kumar 2 years, 3 months ago

Hii

Surendra Soren 2 years, 3 months ago

Volt

ANSWER

Is chemical reaction releted to breaking and making bond between atoms and molecules

Posted by Unnati S. Kale 2 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Gaurav Kumar 2 years, 2 months ago

Yes

Yeshwant Biradar 2 years, 3 months ago

Yes

ANSWER

Describe the role of water in photosynthesis?

Posted by Ruheen Hasan 2 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Chandan Kumar 2 years, 2 months ago

Splitting of water molecules

Amrit Kumar 2 years, 3 months ago

The role of water in photosynthesis is very necessary because it helps the leaf to make food for the plant

ANSWER

Balance the equation: Bacl2+feso4

Posted by Mohit Gothwal 2 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Mohit Gothwal 2 years, 3 months ago

This is the question only

Sandhya Chaudhary 2 years, 3 months ago

Please write full question

ANSWER

Draw a picture of the electrolytic refining of copper. Name the gases release at anode and cathode

Posted by Himesh Rj 2 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Gautam Bansal 2 years, 3 months ago

Hydogen and oxygen

ANSWER

Explain all the terms related to spherical mirror

Posted by Rohit Rohit 2 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Gaurav Kumar 2 years, 2 months ago

Aperture, centre of curvature,radius of curvature,pole focus ,principal axis ,converging,diverging ,incident ray and reflected ray

ANSWER

what is Nobel metal

Posted by Himanshu Am 2 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Gaurav Kumar 2 years, 2 months ago

Inert metal or octet.

Gautam Bansal 2 years, 3 months ago

Noble metals are those metals which can not react with anyone Dear 😇😇 And subscribe my youtube channel whose name is Gautam maths classes

Jeevika Singh Rajput 2 years, 3 months ago

Jiska valency complete hotaa hai

ANSWER

battery have unlike charge why is not attracted towards

Posted by Himanshu Am 2 years, 3 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

What is the process of excretory system in human beings

Posted by Rani Thomas 2 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Arya Choudhary 2 years, 3 months ago

Urea

Siddhi Raghuwanshi 2 years, 3 months ago

Urea

ANSWER

Describe the nature of image from the object in placed at distance of 20 cm from the concave mirror of focal length 10 cm

Posted by Sadhana Dongre 2 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Sakshi Singh 2 years, 3 months ago

Given , u = -20 cm f = -10cm v = ? (to be calculated) By using mirror formula, we get .. 1/v + 1/u = 1/f 1/v + 1/-20 = 1/-10 1/v = -1/10 + 1/20 Now do it urself.. 👍🏻 I think It will help u a lot ..!!!

ANSWER

What happens to our eyes when we come out of dark and enters bright sunlight?

Posted by Tripta Devi 2 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Paramjeet Kaur 2 years, 3 months ago

The pupil size becomes short when we enter bright light also the cone cells of the eye become active

ANSWER

Page 29 of 2763

myCBSEguide App

myCBSEguide

Trusted by 1 Crore+ Students

Test Generator

Test Generator

Create papers online. It's FREE.

CUET Mock Tests

CUET Mock Tests

75,000+ questions to practice only on myCBSEguide app

Google Play

Download myCBSEguide App