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

Petroleum is also known as black gold because when crude oil is extracted from the land it is black in colour. People called it gold because of its oil and value. It is very difficult to find

2Thank You

ANSWER

Name three metal which does not react with any type of water.

Posted by Sanket Arjun 6 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Swastik Awasthi 6 years, 4 months ago

Gold, silver and mercury

1Thank You

~ Honey...??#Girl 6 years, 4 months ago

Aluminium, iron and zinc ?

0Thank You

ANSWER

Why is variation neccessary??

Posted by Rohan Raj 6 years, 4 months ago

CBSE > Class 10 > Science

4 answers

~ Honey...??#Girl 6 years, 4 months ago

I said sorry.. Common yrr ab maff bhi krdo

0Thank You

~ Honey...??#Girl 6 years, 4 months ago

Sorry plz

0Thank You

Megha Basine 6 years, 4 months ago

Some variations were to be present in a few individuals in these population, there would be some chance for them to survive. Variations is thus useful for the survival of species over time

2Thank You

? ... 6 years, 4 months ago

Variation is neccery because it helps to increase chances of survival in changing environment.

3Thank You

ANSWER

Give the Answer of my question.??? Which is down

Posted by Sanket Arjun 6 years, 4 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

A concave lens of focal length 15cm forms an image 10cm from the lens. How far is the object placed from the lens? Draw the ray diagram.

Posted by Sanati Ramesh 6 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Sanket Arjun 6 years, 4 months ago

30 cm

1Thank You

ANSWER

What is the period

Posted by Aman Kumar 6 years, 4 months ago

CBSE > Class 10 > Science

3 answers

Uday Chauhan 6 years, 4 months ago

Period is a horizontal rows of elements

1Thank You

Megha Basine 6 years, 4 months ago

Horizontal rows of elements in periodic table of elements having elements of same valency are called period

1Thank You

Abhinav ? 6 years, 4 months ago

Period is the horizontal row of elements in the table.

4Thank You

ANSWER

Bile juice does not contain any digestive enzymes, yet it is essential for digestion,why so? Explain

Posted by Sanket Arjun 6 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Drakshayani Patil 6 years, 4 months ago

Because it helps in emulsification of fats..

1Thank You

ANSWER

Last year savoyada pre board

Posted by Laxmi Semliya 6 years, 4 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Which fluid in the human body wets the internal organs?

Posted by Sanket Arjun 6 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Abhinav ? 6 years, 4 months ago

Cerebrospinal fluid

3Thank You

Brainly Buddy 6 years, 4 months ago

Srry , I dont know.. sry for that???

0Thank You

ANSWER

What is thermal power plant. ? What are the advantages and disadvantages of thermal power plant

Posted by Rani Mishra ??? 6 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Rani Mishra ??? 6 years ago

???

0Thank You

ANSWER

Why the food chain is unidirection in nature?

Posted by Subhash Chand 6 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Angel Niddhi 6 years, 4 months ago

0Thank You

ANSWER

Osswal book is best for preparing the new pattern of cbse because i bringing these book

Posted by Vikas Saini 6 years, 4 months ago

CBSE > Class 10 > Science

7 answers

Jayesh King 6 years, 4 months ago

Oswaal is best book for pratice for exam of borad

2Thank You

Ashish Kumar Yadav 6 years, 4 months ago

Evergreen the best book cbse new pattern

3Thank You

Miss. 1234 6 years, 4 months ago

Waah Niddhi?????

4Thank You

Angel Niddhi 6 years, 4 months ago

ya its realy gokd and helpfull , it makes student to learn in easy way tough questions also . Its really really great book because from last 3 years I am using this books of oswaal . It helps student to get understand point very easily and properly also it helps more exam time . You are lucky that you have got a way to buy the oswaal books they are too helpful . Use them properly and keep them in good condition ok by.

1Thank You

Sahil Singh 6 years, 4 months ago

Hmm....

1Thank You

Miss. 1234 6 years, 4 months ago

So what,...

6Thank You

Abhinav ? 6 years, 4 months ago

I also have oswaal books.

4Thank You

ANSWER

People who die from aids are not killed by the virus itself. explain

Posted by Mohammad Shakrin Ansari 6 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Yogita Ingle 6 years, 4 months ago

AIDS virus damages the immune system of the body rendering the body weak and prone to infections. Thus, virus does not kill the humans directly.

0Thank You

Aniket Raj 6 years, 4 months ago

Hqjjq

0Thank You

ANSWER

What is meaning of HCL

Posted by Shivam Mishra 6 years, 4 months ago

CBSE > Class 10 > Science

8 answers

Shivam Mishra 6 years, 4 months ago

bye jann

1Thank You

~ Honey...??#Girl 6 years, 4 months ago

Babye

1Thank You

Shivam Mishra 6 years, 4 months ago

1Thank You

~ Honey...??#Girl 6 years, 4 months ago

Me raat ko aajaungi.. Bye ?

1Thank You

Sanket Arjun 6 years, 4 months ago

Hii ???

2Thank You

~ Honey...??#Girl 6 years, 4 months ago

Hydrochloric acid

0Thank You

Aniket Raj 6 years, 4 months ago

Hydrochloric acid

1Thank You

Shivam Mishra 6 years, 4 months ago

Hii freinds koi online he

1Thank You

ANSWER

Kya iss bar board mein lab manual se practical based questions ayange??? In science class X year 2020

Posted by Dips ? Tyagi 6 years, 4 months ago

CBSE > Class 10 > Science

3 answers

Vikas Saini 6 years, 4 months ago

1Thank You

Nityendra Kumar 6 years, 4 months ago

1Thank You

Aryan Pratap Singh 6 years, 4 months ago

1Thank You

ANSWER

Practical class 10 with solutions

Posted by Bhavesh Kumar 6 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Roman ? Reigns ? 6 years, 4 months ago

Practical based questions will not come in the board exam

0Thank You

ANSWER

Define the focal lens

Posted by Kaif Kaif 6 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Aadya Singh ? 6 years, 4 months ago

Distance between the center of a lens or mirror and focal point of lens and mirror is called focal length.

1Thank You

ANSWER

How is chloride of lime different from calcium chloride

Posted by Meenakshi Shyam 6 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 6 years, 4 months ago

Chemically, chloride of lime is calcium oxy chloride, CaOCl_2,also called bleaching powder. When exposed to air it gradually lose its chlorine because it reacts with carbon dioxide present in air to produce calcium carbonate and chlorine gas.

0Thank You

ANSWER

What is cinabar

Posted by Navin Raji 6 years, 4 months ago

CBSE > Class 10 > Science

3 answers

Uday Chauhan 6 years, 4 months ago

It is an ore of mercury

0Thank You

Meenakshi Shyam 6 years, 4 months ago

Cinnabar is an ore of Mercury.

1Thank You

Aadya Singh ? 6 years, 4 months ago

Cinnabar is an ore of mercury. It is also known as hydrogen sulphide.

3Thank You

ANSWER

What is artificial selection????

Posted by ? ... 6 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Aadya Singh ? 6 years, 4 months ago

Artificial selection is a process in which man selects a particular desired traits for breeding , in order to generate new plants/ animals with improved characters.

4Thank You

ANSWER

In the f2 generation of a cross , progency having different traits are produced in the ratio 3:1.State whether it is a monohybrid cross or dihybrid cross ? Give one example of such a cross.

Posted by ? Queen ? 6 years, 4 months ago

CBSE > Class 10 > Science

3 answers

Rohan Raj 6 years, 4 months ago

Good morning Sis..

1Thank You

Apoorva ..... 6 years, 4 months ago

Lagta h chale gaye

1Thank You

Apoorva ..... 6 years, 4 months ago

It monohybrid eg: Tt cross with Tt in pea plant T is tall plants and t is dwarff

1Thank You

ANSWER

What are the cromosomes ? How many *** chromosomes are there ? Name them.

Posted by ? Queen ? 6 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Apoorva ..... 6 years, 4 months ago

There 46chromosomes and in pairs there are 23chromosomes . name nahi pta ?

1Thank You

ANSWER

State one advantage of variation to a species .

Posted by ? Queen ? 6 years, 4 months ago

CBSE > Class 10 > Science

3 answers

? ... 6 years, 4 months ago

It help species to survive in changing enviroment

1Thank You

? Queen ? 6 years, 4 months ago

Thanks...

0Thank You

Apoorva ..... 6 years, 4 months ago

It will help species to survive in any condition of enviornment

1Thank You

ANSWER

Name one reptile in each case where higher incubation temperature leads to the development leads to the development of : (a) male progeny , (b) female progeny ??

Posted by ? Queen ? 6 years, 4 months ago

CBSE > Class 10 > Science

3 answers

Aadya Singh ? 6 years, 4 months ago

a) Lizards b) Turtles.

3Thank You

? ... 6 years, 4 months ago

A)Lizard and b)turtle

2Thank You

Apoorva ..... 6 years, 4 months ago

Yeh thoda atpata h samajh nahi aaya sorry

0Thank You

ANSWER

Which of the two , sperm or ovum ,decides the *** of the child ??

Posted by ? Queen ? 6 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Aadya Singh ? 6 years, 4 months ago

Sperm

3Thank You

ANSWER

When a person dies , why nose and ears are filled with cotton?

Posted by Saransh Gupta 6 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Vikas Singh 6 years, 4 months ago

Because many harmful gases comes out of a dead body and it can ha other who is close to it

0Thank You

ANSWER

What happens when crystals of baking saoda are exposed to air ?

Posted by Saransh Gupta 6 years, 4 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

What do you mean by law of segregation?

Posted by Sanket Arjun 6 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Abhinav ? 6 years, 4 months ago

Each inherited trait is defined by a pair of gene. Parental genes are randomly separated to the germ cells so that germ contain only one pair of gene.

2Thank You

ANSWER

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