CBSE > Class 07 > Science | CBSE Board | Homework Help

Rust is an substance formed on iron objects , if it comes in contact with moisture and oxygen. Some ways to prevent rusting is galvanisation , oiling , painting etc.

2Thank You

Dipanjona Dutta 2 years, 1 month ago

Sir what is sexual reproduction

4Thank You

Vidhi Sharma 2 years, 1 month ago

When iron will be kept in sun for long time so it will reduce its freshness so the substance formed on that time is rust

3Thank You

Mohit Raj 2 years, 1 month ago

What is soil

1Thank You

Aditya Singh 2 years, 1 month ago

Rust is an substance

2Thank You

ANSWER

What is the function of acid and base

Posted by Anand Kumar 2 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Aastha Yadav 2 years ago

These substances taste sour because they contain acids. The chemical nature of such substance is acidic The substances like these which are bitter in taste and feel soapy on touching are known as bases. The nature of such substances is said to be basic

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Pournami Sanil 2 years, 1 month ago

What are the product of photosynthesis

4Thank You

ANSWER

Why does a person develop cramps after a vigorous exercise

Posted by Harshit Tiwari 2 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Anushka Rath 2 years, 1 month ago

A person develops cramps after a vigorous exercise as lactic acid formation takes place inside our body. Thus is called as anaerobic respiration.

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ANSWER

Mineral acids

Posted by Mayuresh Kamble 2 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Anand Kumar 2 years, 1 month ago

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ANSWER

A carnivorous

Posted by Himanshu Sinha 2 years, 1 month ago

CBSE > Class 07 > Science

4 answers

Shyam Ladli Vaishnavi 1 year, 11 months ago

Acids are so in taste the nature of acid are acidic

0Thank You

Aditya Singh 2 years, 1 month ago

An animal who eats it's pret

0Thank You

Anand Kumar 2 years, 1 month ago

A animal that eats flesh, non veg 🐤🐤 is called carnivore animal

0Thank You

Anand Kumar 2 years, 1 month ago

My doubt is what is acid

1Thank You

ANSWER

Shpet notes on A+ blood group

Posted by Awhan 08 Mallick 2 years, 1 month ago

CBSE > Class 07 > Science

0 answers

ANSWER

Why are water pipes galvanized?

Posted by Prerna Kumari 2 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Aditya Singh 2 years, 1 month ago

Water pipes are Galvanized is to prevent rusting

0Thank You

Ekampreet Sohanvi 2 years, 1 month ago

In many cases the pipes are galvanized which means to deposit a layer of zinc to prevent rusting

2Thank You

ANSWER

What is the function of HCL in our body

Posted by Salha Nuri 2 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Ekampreet Sohanvi 2 years, 1 month ago

Hcl is hydrochloric acid. It kills the unwanted bacteria which may enter along with the food

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ANSWER

Green plant also known as _____________.

Posted by Sukhmanjeet Singh 2 years, 1 month ago

CBSE > Class 07 > Science

5 answers

Vidhi Sharma 2 years, 1 month ago

Autotrophs

0Thank You

Pournami Sanil 2 years, 1 month ago

Autotrophs

0Thank You

Sagar Sen 2 years, 1 month ago

Autotrophs

0Thank You

Akshat Darak 2 years, 1 month ago

Autotrops

1Thank You

Anish Kumar 2 years, 1 month ago

𝓐𝓾𝓽𝓸𝓽𝓻𝓸𝓹𝓼

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ANSWER

The blood from the hert is transported to all parts of the body by the __________

Posted by Ganta Kalyani 2 years, 2 months ago

CBSE > Class 07 > Science

3 answers

Sagar Sen 2 years, 1 month ago

Arteries

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Gayatree Sahu 2 years, 1 month ago

Arteries

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Drishti Saneja 2 years, 1 month ago

Capillaries

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ANSWER

Why is MCB's preferred over fuse ?? Give two examples

Posted by Karnica Mishra 2 years, 2 months ago

CBSE > Class 07 > Science

0 answers

ANSWER

Explain how soil if formed with a labelled diagram

Posted by Neerja .. 2 years, 2 months ago

CBSE > Class 07 > Science

0 answers

ANSWER

The following is autographic 123

Posted by Allen Michael 2 years, 2 months ago

CBSE > Class 07 > Science

0 answers

ANSWER

True or false

Posted by Sharanu Mathpati 2 years, 2 months ago

CBSE > Class 07 > Science

1 answers

Allen Michael 2 years, 2 months ago

I want to traffic is kind of This is a kind of

3Thank You

ANSWER

Explain respiration in plants.

Posted by Lalali Rathor 2 years, 2 months ago

CBSE > Class 07 > Science

0 answers

ANSWER

Explain respiratory system in humans humans.

Posted by Lalali Rathor 2 years, 2 months ago

CBSE > Class 07 > Science

1 answers

Roshni Sahoo 2 years, 1 month ago

When we inhale air into the body through the nasal cavity. From the nasal cavity the air reaches our lungs through the windpipe . lungs are present in the chest cavity. This cavity is surrounded by ribs on the sides .

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ANSWER

Floods can be controlled by

Posted by Aryan Yadav 2 years, 2 months ago

CBSE > Class 07 > Science

3 answers

Shyam Ladli Vaishnavi 1 year, 11 months ago

Plants

0Thank You

Divyanshu Choudhary 2 years, 2 months ago

Afforestation

0Thank You

Bharat Kumar 2 years, 2 months ago

Which of the following city is unlikely to be affected by a cyclone.

3Thank You

ANSWER

What is rusting?

Posted by Rekha Kumari 2 years, 2 months ago

CBSE > Class 07 > Science

2 answers

Karnica Mishra 2 years, 2 months ago

Rusting is a process of depositing a brownish layer on an iron object . This happens when an iron object is left in air which has moisture in it . Iron+ water+ oxygen——— rust

0Thank You

Arjun Kumar 2 years, 2 months ago

When an iron object is left in damp air (or moisture) for a considerebal time,it gets covered with a red brown flaky substance called Rust.This is called rusting of Iron.

1Thank You

ANSWER

What is water of crystalization

Posted by Muhammad Ashhad 2 years, 2 months ago

CBSE > Class 07 > Science

4 answers

Satyanarayan Sethy 2 years, 2 months ago

The process of formation of crystals of pure substance from their solution is called crystalisation

0Thank You

Arjun Kumar 2 years, 2 months ago

The process of cooling a hot concentrated solution of a substance to obtain crystal called cristalization.

3Thank You

Devang Singla 2 years, 2 months ago

Sulphur chloride

3Thank You

Hannah Fathima 2 years, 2 months ago

No idea

2Thank You

ANSWER

WHAT IS AN ALKALIE,

Posted by Muhammad Ashhad 2 years, 2 months ago

CBSE > Class 07 > Science

1 answers

Arjun Kumar 2 years, 2 months ago

The presence of water in base called alkali.

1Thank You

ANSWER

Today is kendriya vidyalaya school science exam allthebest

Posted by Satyam Gupta 2 years, 2 months ago

CBSE > Class 07 > Science

1 answers

.... Poonia 2 years, 2 months ago

What is heat ?

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ANSWER

3/10/23 science exam i Aditya

Posted by Satyam Gupta 2 years, 2 months ago

CBSE > Class 07 > Science

0 answers

ANSWER

Milk of magnesia is an _____________.

Posted by Sachi Rindhe 2 years, 2 months ago

CBSE > Class 07 > Science

5 answers

Arjun Kumar 2 years, 2 months ago

Acid

0Thank You

Satyam Gupta 2 years, 2 months ago

Mg(OH)2

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S Siva Krishnan 2 years, 2 months ago

magnesium hydroxide

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Asish Behera 2 years, 2 months ago

Magnesium hydroxide

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Harshitha Ganesh 2 years, 2 months ago

Magnesium hydroxide

2Thank You

ANSWER

Phenolphthalein is a synthetic indicator and it's colour in acidic and basic solution respectively are.....

Posted by Shriya Arora 2 years, 2 months ago

CBSE > Class 07 > Science

2 answers

Karnica Mishra 2 years, 2 months ago

Phenophetlein gives pink with base remain colourless with acid and green with neutral

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S Nila 2 years, 2 months ago

Green

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ANSWER

Write the difference between uniform speed and non uniform speed

Posted by Manasa U 2 years, 2 months ago

CBSE > Class 07 > Science

1 answers

Ishika Giri 2 years, 2 months ago

A vehicle moving along a straight line with constant speed is called a uniform motion. While in non uniform Motion it moves along a straight line but keeps changing its speed.

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ANSWER

Write the name of three indicators occur from nature

Posted by Krupal Khandekar 2 years, 2 months ago

CBSE > Class 07 > Science