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Filtration: Filtration is a process by which insoluble solids can be removed from a liquid by using a filter paper. A filter paper is a special type of paper which has pores that are tiny enough to let only liquids pass through it. If you pass a solution through filter paper, any undissolved solid particles will get left behind on the paper whereas the liquid will filter through. The liquid that passes through is called the filtrate and the undissolved solid particles are called residue.
Example: A mixture of chalk powder and water can be separated by this method.

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What is presure

Posted by Rahul Pacherwal 7 years, 2 months ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 7 years, 2 months ago

Pressure is defined as the thrust on unit area of a surface. Its SI unit is Pascal. Pressure = force/ area = F/A S.I unit is Nm-2 is also called 1Pascal (Pa). Pressure is scalar quantity.
Pressure is inversely proportional to the area. i.e. force acting on the small area exerts more pressure.
Pressure is directly proportional to the applied force. i.e. more pressure is exerted if the force is increased and vice-versa.

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What are the charecteristics of force????

Posted by Saloni Gupta 7 years, 2 months ago

CBSE > Class 08 > Science

2 answers

Saloni Gupta 7 years, 2 months ago

Thanku

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Yogita Ingle 7 years, 2 months ago

A force is any interaction that, when unopposed, will change the motion of an object.
A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull.
A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of newton and represented by the symbol F.
F = m a (Newton's second law)
Force can be attractive or repulsive. In case of charges or magnetic poles, there will be repulsion if they are of like nature. On the other hand if nature is unlike, the force will be attractive.

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Why won't we get crushed by atmospheric pressure?

Posted by Bantai Aviral 7 years, 2 months ago

CBSE > Class 08 > Science

5 answers

Arushi Chandurkar 7 years, 2 months ago

As ese exert pressure in the atmosphere from our blood, similarly atmosphere exerts pressure on us. The pressure exerted by is thi the atmosphere is equal, that is why we don't get crushed up.

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Saloni Gupta 7 years, 2 months ago

our blood pressure

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Rudra Sharma 7 years, 2 months ago

Bcoz of pressure of blood

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Janhavi Thote 7 years, 2 months ago

Coz our blood too exerts pressure..as liquid do..

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Saloni Gupta 7 years, 2 months ago

IDK

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Which are the 2 unmanned spacecrafts which are travelling throughout the space for more than 33 years??

Posted by Kashish Goyal 7 years, 2 months ago

CBSE > Class 08 > Science

1 answers

Anish Singh 7 years, 2 months ago

Voyager 1 and 2 the the 2 unamed spacecradts who are travelling throughout the space for mire than 33 years

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Explain the rowlatt act

Posted by Nishant Tyagi 7 years, 3 months ago

CBSE > Class 08 > Social Science

1 answers

Yogita Ingle 7 years, 2 months ago

1. The Rowlatt Act was a law passed by the British in colonial India in March 1919, indefinitely extending "emergency measures" enacted during the First World War in order to control public unrest and root out conspiracy.
2. This act effectively authorized the government to imprison any person for a maximum period of two years, without trial who was suspected of doing terror in the Raj.
3. The Rowlatt Act gave British imperial authorities power to deal with revolutionary activities.

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India's first king

Posted by Krishna Jhalani 7 years, 3 months ago

CBSE > Class 08 > हिंदी

2 answers

Kashish Bhambhani 7 years, 2 months ago

Chandragupta Maurya

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Krishna Jhalani 5 years, 8 months ago

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लाख का मतलब क्या होता हैं ।

Posted by Arush Jain 7 years, 3 months ago

CBSE > Class 08 > हिंदी