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

Because distilledwater does not contain any ionic compound like salt ,acid or base where as tap water contains some salt, acids and base ionic compounds therefore tap water conduct electricity and distilled water does not.

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What makes the cakes soft and spongy

Posted by Student Cbse 2 years, 5 months ago

CBSE > Class 10 > Science

4 answers

Samiksha Chhipa 2 years, 4 months ago

Baking soda

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Sahana Parashetti 2 years, 4 months ago

when baking powder reacts with mild acid it gives baking soda + H2O + CO2 in this reaction CO2 makes the cakes spongy and smooth

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Sumit Rajput 2 years, 5 months ago

When baking powder react with tartaric acid it gives baking powder and co2 . Co2 release in cakes and make spongy and soft

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Yashika Kesharwani 2 years, 5 months ago

Baking soda

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How can baking soda be converted into baking powder

Posted by Student Cbse 2 years, 5 months ago

CBSE > Class 10 > Science

4 answers

Aakriti Dubey 2 years, 4 months ago

Yes, by adding a mild acid like tartaric acid in it.

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Sumit Rajput 2 years, 5 months ago

NAHCO3+C4H4O6=C4H4NA2O6 +CO2

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Student Cbse 2 years, 5 months ago

By adding mild edible acid that is tartaric acid

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Gaurav Kumar 2 years, 5 months ago

By recrystallisation

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what is deflection of light?

Posted by Shivani Umrao 2 years, 5 months ago

CBSE > Class 10 > Science

1 answers

Priyanshu Singh 2 years, 5 months ago

Light

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What are the different types of bread mould write their function

Posted by Charanika Deuri 2 years, 5 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

why science important for study

Posted by Ankit Kumar 2 years, 5 months ago

CBSE > Class 10 > Science

3 answers

Gaurav Singh 2 years, 4 months ago

Science contains everything.If you will take science stream In class 11 you will study physics if you want to know what is physics answer is that physics contains every thing nature is physics which TV you watched that made by physics. Two famous things about physics :- (1). Physics is the king of science while Mathematics is the queen. (2). Fall in love with physics

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Ankit Kumar 2 years, 5 months ago

thanks

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Ayush Singh 2 years, 5 months ago

Science is important for study for following reasons÷ 1.It help us to know how we work,eat,breath etc.. 2.it also help us how machines work and how can makes it.. 3. It gives perfect reason of anything that happens in world.. 4.It increases our thinking skill..

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Definition of magnification

Posted by Shivam Shiva 2 years, 5 months ago

CBSE > Class 10 > Science

5 answers

Naina Singh 2 years, 5 months ago

Magnification is the value of magnified image with respect to object

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Ayush Singh 2 years, 5 months ago

Magnification is nothing it just a ratio of hight of image up on height of object. Or Ratio of distance of image up on distance of object. According to situation..

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Sanidhya Gorh 2 years, 5 months ago

The ratio of height of image to the height of object is known as magnification.

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Anup Sharma 2 years, 5 months ago

The ratio of height of image (hi)and height of object (ho) then it is called magnification

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Vartika Singh 2 years, 5 months ago

The ratio of height of image (hì) and the height of object (hò)is called magnification..

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Explain the following giving equation in each :- Baking soda is heated Washing soda is heated Gypsum is heated at 373 K

Posted by Jashandeep Kaur 2 years, 5 months ago

CBSE > Class 10 > Science

1 answers

Vaidehi Chaudhari 2 years, 5 months ago

Because the heating point of all is 100°c so the value of Kelvin will be 373 k ( 100 +273)

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ANSWER

How to solve3.5567^24

Posted by Sarika Singh 2 years, 5 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

How to solve 10×0.1964×10^-6 ÷ 1.6×10^-8

Posted by Bhumika . 2 years, 5 months ago

CBSE > Class 10 > Science

1 answers

Drashti Makan 2 years, 4 months ago

1.2275E -14

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ANSWER

What is school

Posted by Arif Sheikh 2 years, 5 months ago

CBSE > Class 10 > Science

5 answers

Raunak Patel 2 years, 4 months ago

School ek aisi jagah hai jahan se hum log kuch ban kar aur kuch seekh kar aate hai 🙏

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Gaurav Singh 2 years, 4 months ago

School is that place from where many Doctors, Army officers, Engeeneirs and other officers comes and School is the temple of study.

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Garvit Varshney 2 years, 5 months ago

Student's jail

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Ankit Kumar 2 years, 5 months ago

Jahan bacchon ko kuta jata hai aur aur parents ko Luta jata hai

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Shreyas Srinath 2 years, 5 months ago

A place where you learn

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ANSWER

How many hormones present in human body?

Posted by Student Vip 2 years, 5 months ago

CBSE > Class 10 > Science

3 answers

Pravesh Singh 2 years, 5 months ago

There are over 50 hormones present in human body

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Harsh Malhotra 1 year, 11 months ago

Proof:Let √2 is a rational number Then, P/q = √2 Squaring both side (P/q)² = (√2)² P²/q² = 2 Where,. 2 is a rational but, P²/q² is irrational So, √2 is a irrational no

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Rahil Khan Khan 1 year, 11 months ago

Prove that under root 2 rational number

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ANSWER

An object and object placed at 20 cm distance from concave mirror for obtaining four times of image of the object height. What will be focal length of mirror ? Please send the correct answer...🥺

Posted by Aadarsh Kumar 2 years, 5 months ago

CBSE > Class 10 > Science

2 answers

Dev Sharma 2 years, 5 months ago

Here u =-20 and let height of object be x and AtoQ ----"---- image 4x Now m=h'/h 4x/x=4 m is also equal to -V/U 4=-v/-20 -80=-v v=80

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Yash Mann 2 years, 5 months ago

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Define human reproductive parts both male and female

Posted by Gø®Ãv D££P 2 years, 5 months ago

CBSE > Class 10 > Science

1 answers

Yash Mann 2 years, 5 months ago

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By the structure of graphite would you know me how it flows the electricity.If not then I will gove answer later.

Posted by Adarsh Dixit 2 years, 5 months ago

CBSE > Class 10 > Science

3 answers

Gaurav Kumar 2 years, 5 months ago

The material become a conductor by their arrangement of electrons not by structure of substance

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Yash Mann 2 years, 5 months ago

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Naman Raj 2 years, 5 months ago

Structure do not require to flow the current the state matters in which state the graphite is ....

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ANSWER

What is neprons

Posted by Ayush And Piyush Rewa 2 years, 5 months ago

CBSE > Class 10 > Science

5 answers

Aroob Khursheed 2 years, 5 months ago

nephron is the basic functional unit of kidney which helps in the formation of urine and excreation of waste products.

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Apurv Roy 2 years, 5 months ago

Small unit of kidney which helps in formation of urine which help in excretion of metabolic waste like amonia and urea .

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Naman Raj 2 years, 5 months ago

Nephron is the basic part of kidney ...

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Vani Shree 2 years, 5 months ago

Smallest unit of kidney

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Shraddha Gupta 2 years, 5 months ago

nephron is the basic functional unit of the kidney

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ANSWER

_______ is known as the master of master gland.

Posted by Mohit Gothwal 2 years, 5 months ago

CBSE > Class 10 > Science

5 answers

Shraddha Gupta 2 years, 5 months ago

Pituitary Gland

2Thank You

Paher Goutam 2 years, 5 months ago

pituitary gland

2Thank You

Swarnika Suman 2 years, 5 months ago

Hypothalamus

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Vidhi Jain 2 years, 5 months ago

Hypothalamus

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Anushka Ranjan 2 years, 5 months ago

Pituitary

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ANSWER

Why there is no reflection when light ray falls perpendicular

Posted by Mohini Goswami 2 years, 5 months ago

CBSE > Class 10 > Science

5 answers

Vani Shree 2 years, 5 months ago

Because angle i=0°

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Aryan Dogra 2 years, 5 months ago

Normal

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Shraddha Gupta 2 years, 5 months ago

Because light falling at 0° that's why angle of incidence and angle of reflection is zero degree

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Swarnika Suman 2 years, 5 months ago

Because the angle of incidence and reflection is of zero degree

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Raghvendra Singh 2 years, 5 months ago

Because when light fall perpendicular to surface the light ray retrace back its path because angle of reflection is 0°

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ANSWER

Write any four evidences of evolution.

Posted by Sayali Patil 2 years, 5 months ago

CBSE > Class 10 > Science

2 answers

G Thanusri 2 years, 5 months ago

Actually we didn't have this topic

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Sayali Patil 2 years, 5 months ago

1) morphological evidences 2) anatomical evidences 3)palaeontological evidences 4) embryological evidences.

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A refrigerator having a power rating of 3KW operates for 10 hour a day. Calculate the cost (in rupees) of electrical energy rupees 3.40 per KWh

Posted by G Pranesh 2 years, 5 months ago

CBSE > Class 10 > Science

1 answers

G Thanusri 2 years, 5 months ago

Energy consumed = power x time (i) Energy = 3 kW × 10 h = 30 kWh (ii) 1 kilowatt hour (kWh) = 3.6×106 J 30kWh=30×3.6×106J=1.08×108J

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Light ray AB incidents on a polished surface XY at an angle of 40. The second polished surface is placed in such a way that the reflected ray BC from polished surface XY retraces its path. Find the angle of inclination of two polished surface.

Posted by Tejasv Sahu 2 years, 5 months ago

CBSE > Class 10 > Science

1 answers

Ankit Kumar 2 years, 5 months ago

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How is pollination different from fertilization ?

Posted by Nakshatra Gupta 2 years, 5 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Function of stomata?

Posted by Gunnu Nishad 2 years, 5 months ago

CBSE > Class 10 > Science

5 answers

Sahana Parashetti 2 years, 4 months ago

tomato it is a part of a plant which helps for the exchange of a gases and and also help for that transpirationprocess transpiration

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Mohit Gothwal 2 years, 5 months ago

It helps in removing the water from leaves. Stomata facilitates gaseous exchange.

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Mohini Goswami 2 years, 5 months ago

It helps in removing water from the leaves. - It takes carbon dioxide and gives out oxygen during the process of photosynthesis. - It helps in regulating water movement through transpiration. Stomata facilitates gaseous exchange.

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Hanniel Reni 2 years, 5 months ago

Stores food

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Pratyush Bidhar 2 years, 5 months ago

Stomata regulate gas exchange between the plant and environment and control of water loss by changing the size of the stomatal pore. This stomatal movement is affected by several environmental stimuli, such as relative humidity, CO2 concentration, and light intensity.

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ANSWER

36000 j heat energy is to be produced in an electric heater of resistance 1000ohm through which electric current is passed for 5 minutes . Calculate the current passing through heater

Posted by Saksham Khatta 2 years, 5 months ago

CBSE > Class 10 > Science

2 answers

G Thanusri 2 years, 5 months ago

H=I²RT I=√H/Rt =√36000/1000×300 =√0.12=0.35

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Raj Dhakad 2 years, 5 months ago

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The near point of a person suffering from hypermetropia is at 50 cm from is eye. what is the nature and power of the lens needed to correct this defect

Posted by Savitoj Kaur 2 years, 5 months ago

CBSE > Class 10 > Science

2 answers

Student Cbse 2 years, 5 months ago

The nature of lens is convex lens that is converging lens and the power is +2 diopter

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Pratyush Bidhar 2 years, 5 months ago

Use app Login Class 12 >>Physics >>Ray Optics and Optical Instruments >>Defects of Vision and Correction >>The near - point of a person suffering f Question The near-point of a person suffering from hypermetropia is at 50 cm from his eye. What is the nature and power of the lens needed to correct this defect? (Assume that the near-point of the normal eye is 25 cm). Medium Open in App Updated on : 2022-09-05 Solution Verified by Toppr The person needs a convex lens to rectify this defect. Calculation of power of the lens: This hypermetropic eye can see the nearby object kept at 25 cm clearly if the image is formed at its own near point i.e. 50 cm. Object distance, u=−25 cm Image distance, v=−50 cm v1−u1=f1 −501−−251=f1 f=+50 cm P=f(in cm)100=50100=+2D

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Are humans totally aerobic?

Posted by Nehal Agarwal 2 years, 5 months ago

CBSE > Class 10 > Science

4 answers

Aroob Khursheed 2 years, 5 months ago

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Study Dil Sa 1 Chauhan 2 years, 5 months ago

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Mohammad Hadi 2 years, 5 months ago

No humans are not totally aerobic because if we take muscle cramps into consideration they are caused when there is lack of oxygen

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Rati Ram 2 years, 5 months ago

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The sum of n terms of sequence 1/1*2 , 1/2*3 , 1/3*4 .... is

Posted by Divakar Jha 2 years, 5 months ago

CBSE > Class 10 > Science

1 answers

Anurag Verma 2 years, 5 months ago

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Practical of displacement reaction cuso4.5h2o

Posted by Jeepy Mara 2 years, 5 months ago

CBSE > Class 10 > Science

1 answers

Student Cbse 2 years, 5 months ago

Reaction of Iron Nails with Copper Sulphate Solution in Water. When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed on the surface of iron and the colour of copper sulphate solution changes from blue to light green

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What is location, function, hormone and deficiency of thymous gland?

Posted by Mohit Gothwal 2 years, 5 months ago

CBSE > Class 10 > Science