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Paheli’s mother made a concentrated sugar syrup by dissolving sugar in hot water. On cooling, crystals of sugar got separated. This indicates a – (a) physical change that can be reversed. (b) chemical change that can be reversed. (c) physical change that cannot be reversed. (d) chemical change that cannot be reversed.

Posted by Anisha Nair 8 years ago

CBSE > Class 07 > Science

2 answers

Mahmoodul Hasan 5 years ago

Why

Nitya Goyal 8 years ago

a) physical change that can be reversed

ANSWER

Iron pillar near the Qutub Minar in Delhi is famous for the following facts. Which of these facts is responsible for its long stability? (a) It is more than 7 metres high. (b) It weighs about 6000 kg. (c) It was built more than 1600 years ago. (d) It has not rusted after such a long period.

Posted by Anisha Nair 8 years ago

CBSE > Class 07 > Science

0 answers

ANSWER

What is forest

Posted by Ashish Kumar 8 years ago

CBSE > Class 07 > Science

1 answers

Anisha Nair 8 years ago

A biotic community spread over a large area which mainly dominated by variety of plants such as herbs, shrubs, trees etc... Providing food, shelter to a wide variety of animals is knowns as forest

ANSWER

stapler is a which kind of lever ?1st class,2nd class,3rd class lever.

Posted by Abhishek Shaw 8 years ago

CBSE > Class 07 > Science

1 answers

Palak Rana 8 years ago

3rd level

ANSWER

What is light??????????

Posted by Siya Gusain 8 years ago

CBSE > Class 07 > Science

1 answers

Armaan Rizvi 8 years ago

Light is a source of energy

ANSWER

What is light?

Posted by Sahil Kedia 8 years ago

CBSE > Class 07 > Science

1 answers

Shreya Chaudhary 8 years ago

The natural agent that stimulates sight and makes things visible.

ANSWER

Cellulose can be digested by ruminants ,but not by man. Explain?

Posted by Prachi Wadhwa 8 years ago

CBSE > Class 07 > Science

1 answers

Anisha Nair 8 years ago

Ruminants have large sac-like structure between the small intestine and large intestine. The cellulose of the food is digested by the food is digested by the action of cellulose digesting enimy (i.e cellulose and certain bacteria which are not present in humans)

ANSWER

Bye which Parts of does the Cockroach respiration

Posted by Biswajit Kumar 8 years ago

CBSE > Class 07 > Science

3 answers

Shreya Chaudhary 8 years ago

Through Trachea

Daksh Tiwari 8 years ago

trache

Amrendra Kumar 8 years ago

Through Trachea

ANSWER

Make four electromagnet with 20,40,60 and 80 turn. Connect them one by one to a battery of 2 cells .bring the electromagnet near a box of pins connect the number of pins attracted by it compare the strength of electromagnet

Posted by Subhrajit Lahkar 8 years ago

CBSE > Class 07 > Science

1 answers

Kripansh Pandey 8 years ago

The 80 turn magnet is most powerful

ANSWER

How many nuclei in a zygote

Posted by Bhaskar Sahoo 8 years ago

CBSE > Class 07 > Science

1 answers

Shreya Jha 8 years ago

2

ANSWER

Why is the spectrum made of 7 colours?

Posted by Deesha Madalli 8 years ago

CBSE > Class 07 > Science

1 answers

Seema Ghai 8 years ago

Because white light consists of 7 colour

ANSWER

What is diaphragm

Posted by Jujhar Kundal 8 years ago

CBSE > Class 07 > Science

1 answers

Amrendra Kumar 8 years ago

A muscular sheet forms the floor of chest cavity

ANSWER

What diaphragm

Posted by Jujhar Kundal 8 years ago

CBSE > Class 07 > Science

0 answers

ANSWER

What has ridges along its length

Posted by Devansh Kaushik 8 years ago

CBSE > Class 07 > Science

0 answers

ANSWER

Where does fruit form on plant Name the part of flower

Posted by Arbaj Ali 8 years ago

CBSE > Class 07 > Science

1 answers

Arbaj Ali 8 years ago

Ovary

ANSWER

How trachea prevent from sweet

Posted by Mayank Mayank 8 years ago

CBSE > Class 07 > Science

0 answers

ANSWER

Heat Phy

Posted by Sharu Khan 8 years ago

CBSE > Class 07 > Science

0 answers

ANSWER

K

Posted by Gargi Gupta 8 years ago

CBSE > Class 07 > Science

0 answers

ANSWER

What is concave and convex lens and mirror

Posted by Ankit Gaurav 8 years ago

CBSE > Class 07 > Science

0 answers

ANSWER

Why rainbow is always in arc shape?

Posted by Hardik Sharma 8 years ago

CBSE > Class 07 > Science

0 answers

ANSWER

What is dry

Posted by Satyam Umar 8 years ago

CBSE > Class 07 > Science

1 answers

Amrendra Kumar 8 years ago

free from moisture or liquid; not wet or moist.

ANSWER

What is blood vessels

Posted by Akshay Shetty 8 years ago

CBSE > Class 07 > Science

1 answers

Anirudh Pyati 8 years ago

These are small pipes which send the blood to all parts of our body and there are two types of blood vessels they are artery and veins

ANSWER

Forfula of si

Posted by Ruder Thakur 8 years ago

CBSE > Class 07 > Science

1 answers

Seema Ghai 8 years ago

Principal x rate x Time x/100

ANSWER

Motion of an object can be represented in pictorial form by their _________.

Posted by Dewanshi Gugnani 8 years ago

CBSE > Class 07 > Science

1 answers

Hitanshi Khandelwal 8 years ago

Distance time graphs

ANSWER

What is reproduction

Posted by Indu Yadav 8 years ago

CBSE > Class 07 > Science

2 answers

Ankit Gaurav 8 years ago

The production of new individual from their parents is called reproduction

Hardik Sharma 8 years ago

The process of producing new ones is called reproduction

ANSWER

Explain. what is virtual image?

Posted by Stupid Lmh 8 years ago

CBSE > Class 07 > Science

3 answers

Alia Singh 7 years, 11 months ago

The image which cannot be obtained on a screen is known as virtual image

Utkarsh Gupta 8 years ago

Virtual image that is not real and that can't be obtain on a screen

Mahi Shukla 8 years ago

In this the virtual image is not a real image

ANSWER

What is a concave lens and a convex mirror?

Posted by Pramitee Chakrabarty Pramitee Chakrabarty 8 years ago

CBSE > Class 07 > Science

0 answers

ANSWER

What us the meaning of electricity

Posted by Chini Jain 8 years ago

CBSE > Class 07 > Science

1 answers

Stupid Lmh 8 years ago

In our standard, electricity means the flow of electrons.

ANSWER

How can you say that light always travel in stright line path?

Posted by Ankit Mishra 8 years ago

CBSE > Class 07 > Science

1 answers

Sanjana Surresh Kokare 8 years ago

We can see from straight pipes but not from bent pipes

ANSWER

What is different between tracea and spricles

Posted by Ram Lodi 8 years ago

CBSE > Class 07 > Science

1 answers

Vaibhavi Nikumbh 8 years ago

Insects have network of air tubes called tracea wherever small openings present on the side of their body are called spiracles

ANSWER

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