CBSE > Class 07 | CBSE Board | Homework Help

The molecules are continually colliding with each other and with the walls of the container. When a molecule collides with the wall, they exert small force on the wall The pressure exerted by the gas is due to the sum of all these collision forces.The more particles that hit the walls, the higher the pressure. If a gas is heated up, its particles move around more quickly. They hit the walls of their container harder and more often. This increases the pressure. Sometimes the pressure gets so great that the container bursts.

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How do historians divided past into period s

Posted by Saniya Shah 6 years, 2 months ago

CBSE > Class 07 > Social Science

0 answers

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Why the temple where destoryed

Posted by Kaushalya Katrik 6 years, 2 months ago

CBSE > Class 07 > Social Science

2 answers

Arya Anupam 6 years, 1 month ago

Temples were destroyed because when some rulers such as Sultan Muhammad of Ghazni, fight warfare, they targeted the wealthy temples and after their win in the warfare they looted the temples. For an example, Muhammad Ghani have looted Somnath, Gujrat (which was one of the wealthiest temple of India) and built his capital. THANKS.

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Yogita Ingle 6 years, 2 months ago

Temples were destroyed because kings built temples to demonstrate their devotion to God and their power and wealth. It is not surprising that when they attacked one another’s kingdoms they often targeted these buildings.

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mister Tandon purchase a computer for Rupees 32000 and a microwave oven for Rupees 6500 on computer he lost 5% and on microwave he gain 15% find his total gain or loss percent

Posted by Anupam Kumar 6 years, 2 months ago

CBSE > Class 07 > Mathematics

1 answers

Shiva Shankar 6 years, 2 months ago

It takes 17 full specific types of trèes to make one tonne of paper.if there are 221 such trees in a forest, then 1) what fraction of forest will be used to make; a) 5 tonnes of paper. b) 10 tonnes of paper. 2) To save 7/13 part of the forest how much of paper we have to save?

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How is cyclone formed? What is the structure of cyclone

Posted by .. ... 6 years, 2 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 6 years, 2 months ago

A Cyclone is a large scale air mass that rotates around strong centers of low pressure.

Water vapors are formed when water is heated.
This heat is released to atmosphere when water vapors convert to water during rains.
The heat released, warms the air around and makes it to move up. This also results in decreased air pressure.
Hence, cooler air from surrounding rushes to take the warm air’s place.
This repeats till a low pressure system with surrounding high speed winds is created. This is called a Cyclone.
Cyclone depends on wind speed, direction, temperature and humidity.

Cyclones are also called Hurricane in USA and Typhoon in Japan and Philippines

Structure of Cyclone The structure of cyclone contains:

Eye – Low pressure and area of sinking air. Its diameter ranges from 10-100 kms.
Eye Wall – Dense cloud surrounding eye having maximum wind speed. It causes maximum destruction.

Spiral rain bands – Band of clouds spiraling into eye wall and it contains heavy rains

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What is the probability of 1

Posted by Studies Students 6 years, 2 months ago

CBSE > Class 07 > Mathematics

1 answers

Bhumika Batra 6 years, 2 months ago

one is occuring a single time

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Notice lost and found

Posted by Shahveer Virk 6 years, 2 months ago

CBSE > Class 07 > English

2 answers

Dalpat Singh 6 years, 2 months ago

English

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Shahveer Virk 6 years, 2 months ago

Notice lost and found

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Name the largest lake in the world

Posted by Kasturi Adhau 6 years, 2 months ago

CBSE > Class 07 > Other Subjects

1 answers

Sia ? 6 years, 2 months ago

Caspian Sea

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What is the process of STEP value in FOR NEXT statement

Posted by Anisha Patel 6 years, 2 months ago

CBSE > Class 07 > Other Subjects

1 answers

Hawra Kapdiwala 6 years, 2 months ago

Dhgbgggxkhff

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Short questions of chapter 6 history rulers and buildings

Posted by Ridhi Mahajan 6 years, 2 months ago

CBSE > Class 07 > Social Science

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Define median of the triangle?

Posted by Jaya Gomathi 6 years, 2 months ago

CBSE > Class 07 > Mathematics

0 answers

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Periodic test

Posted by Jaya Gomathi 6 years, 2 months ago

CBSE > Class 07 > Mathematics

1 answers

Jaya Gomathi 6 years, 2 months ago

Define median of the triangle

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Ho is a live in the black town

Posted by Gundev Gundev Ghargade 6 years, 2 months ago

CBSE > Class 07 > Social Science

2 answers

Saniya Shah 6 years, 2 months ago

Merchants,artisans,native traders and craft persons lived in" black Towns"

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Ruchika T. Chandani 6 years, 2 months ago

The blacks or native traders

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Write all rational numbers whose absolute value is = 5 9

Posted by Deepak Kumar 6 years, 2 months ago

CBSE > Class 07 > Mathematics

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Explain the working of a river with the help of diagram?

Posted by Neha Goel 6 years, 2 months ago

CBSE > Class 07 > Social Science

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What is the meaning of catechu

Posted by Ravindra Singh 6 years, 2 months ago

CBSE > Class 07 > Science

1 answers

Priyansh Sharma 6 years, 2 months ago

Kaitishoo

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Write the following equation in statement from 1) p+4=15 2) m-54=53

Posted by Parth Thukral 6 years, 2 months ago

CBSE > Class 07 > Mathematics

1 answers

Parth Thukral 6 years, 2 months ago

The sum of p and 4 is 15 54 is subtracted from m is 53

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What is the work of MLA

Posted by Aarya Gajbhiye 6 years, 2 months ago

CBSE > Class 07 > Social Science

1 answers

€Kabir£ Patharwat 6 years, 2 months ago

Work of MLA is •To answer the question were asked in the assembly. •To provide the hospital & houses for poor people. •To impact the to make the new rules.

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Balancing the equation-ca(oh)2+hcl=ca cl2+h2o

Posted by Raihana Khan 6 years, 2 months ago

CBSE > Class 07 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Calcium hydroxide react with hydrogen chloride
Ca(OH)₂ + 2HCl → CaCl₂ + 2H₂O

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Phythogorus theirum

Posted by Richpal Vishnoi 6 years, 2 months ago

CBSE > Class 07 > Mathematics

1 answers

Manthan Agrawal 6 years, 2 months ago

Hypotenuse square=sum of the squares of the two sides

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What is identity????????

Posted by Saniya Shah 6 years, 2 months ago

CBSE > Class 07 > Social Science

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Essay on mere jeevan ka lakshya in hindi with sanket bindu

Posted by Yogesh Yadav 6 years, 2 months ago

CBSE > Class 07 > हिंदी

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∆ABC congruent ∆fed explain why exercise 7.2 last question chapter CONGRUENCE OF TRIANGLE??

Posted by Saniya Shah 6 years, 2 months ago

CBSE > Class 07 > Mathematics

2 answers

Saniya Shah 6 years, 2 months ago

Thanks

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Manthan Agrawal 6 years, 2 months ago

Because A=F,B=E,C=D

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What is know as sulphuric acid

Posted by Siri Alavala Puppy 6 years, 2 months ago

CBSE > Class 07 > Science

1 answers

.. ... 6 years, 2 months ago

Sulfuric acid (alternative spelling sulphuric acid), also known as vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with molecular formula H2SO4. It is a colorless, odorless, and syrupy liquid that is soluble in water and is synthesized in reactions that are highly exothermic.[5]

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Rahim Ke dohe Ke Hindi meaning all

Posted by Nirmala Saun 6 years, 2 months ago

CBSE > Class 07 > हिंदी

2 answers

Ridhwan Sharma 6 years, 2 months ago

दोहा – तरुवर फल नहिं खात है, सरवर पियहि न पान। कहि रहीम पर काज हित, संपति सँचहि सुजान | अर्थ: रहीम कहते हैं कि वृक्ष अपने फल स्वयं नहीं खाते हैं और सरोवर भी अपना पानी स्वयं नहीं पीता है। इसी तरह अच्छे और सज्जन व्यक्ति वो हैं जो दूसरों के कार्य के लिए संपत्ति को संचित करते हैं।

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Shikha Gupta . 6 years, 2 months ago

1 dohe meaning: Rahim ji Kahate Hain Ki Jab hamare pass Dhan Hota Hai tab Hamare bahut Mitra Ban Jaate Hain Magar Jab musibat Aane per Jo Hamara Sath Deta Hai Vahi haMara Saccha Mitra Hota Hai 2nd doHa meaning :

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If according to third law of motion, action and reaction forces are always equal in magnitude then why does a plastic bal travel more distance after colliding with an iron sphere? Explain

Posted by Shiv Dayal 6 years, 2 months ago

CBSE > Class 07 > Science

1 answers

.. ... 6 years, 2 months ago

Mass of ball , m₁ = 0.5 kg Velocity of ball , v₁ = 5 m/s Mass of another ball , m₂ = 1 kg Let velocity of another ball = v₂ m/s Using law of conservation of momentum , 0.5 x 5 + 1 x v₂ = 0 v₂ = - 2.5 m/s Therefore , the velocity of another ball is 2.5 m/s opposite to the direction of motion of first ball.

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From where does water droplets come on mirror when we exhale air on it

Posted by Ramesh Kumar 6 years, 2 months ago

CBSE > Class 07 > Science

2 answers

Yogesh Shinde 6 years, 2 months ago

Because of the moisture present in our mouth

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Anjana Kumari 6 years, 2 months ago

The air from our mouth come have moisture in it. When it touches the glass the moisture get condensed and we see water droplets on it

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How the respiration of plants take place?

Posted by Joy Tv 6 years, 2 months ago

CBSE > Class 07 > Science

1 answers

Sia ? 6 years, 2 months ago

There modes for the exchange of gases in plants are as follows:

Plants respire through the tiny pores on the surface of their leaves called stomata. Oxygen enters the plant, while carbon dioxide leaves the plant through these pores. This exchange of gases occurs through the process of diffusion.
Plants do not get all of the oxygen they need for respiration from their stomata. They also absorb oxygen from their roots. This is why plants need well-aerated soil to grow properly. Waterlogged or compacted soil can kill plants by drowning or suffocating them.
In woody stems, exchange of gases occurs through lenticels in the bark.

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The value of 738.6 × 5.4+ 7.8 +2.6

Posted by Sanchi Sharma 6 years, 2 months ago

CBSE > Class 07 > Mathematics