Incorrect URL accessed!!!!

ANSWER

In which gas is present in poha

Posted by Piya Agrawal 4 years, 11 months ago

CBSE > Class 07 > Science

0 answers

ANSWER

How to seeds of plants like legumes get dispersed in nature

Posted by Elina George 4 years, 6 months ago

CBSE > Class 07 > Science

1 answers

Sia ? 4 years, 6 months ago

Seed dispersal happens through wind (small seeds can float on the breeze), water and animals. Seeds with hooks can latch on a passing animals and hitching a ride to a new place.

ANSWER

What do you mean by photosynthesis?

Posted by Bappadittya Biswas 4 years, 11 months ago

CBSE > Class 07 > Science

3 answers

Rakhi Mistry 4 years, 11 months ago

Photosynthesis

𝓼𝓷𝓮𝓱𝓪 𝓢𝓾𝓶𝓪𝓷 4 years, 11 months ago

Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy

Amneet Ersheen 4 years, 11 months ago

Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.

ANSWER

which acid is spinach?

Posted by Sapan Thakur 4 years, 11 months ago

CBSE > Class 07 > Science

3 answers

Raj Jain 4 years, 11 months ago

Soil

Harshit Das 4 years, 11 months ago

Oxalic acid

Yogita Ingle 4 years, 11 months ago

Oxalic acid is present in spinach

ANSWER

What causes an electric bell to buzz??

Posted by Aishwarya Bips 4 years, 11 months ago

CBSE > Class 07 > Science

2 answers

𝓼𝓷𝓮𝓱𝓪 𝓢𝓾𝓶𝓪𝓷 4 years, 11 months ago

hen an electric current is applied, it produces a repetitive buzzing, clanging or ringing sound. ... When an electric current flows through the coils, the electromagnet creates a magnetic field which pulls the armature towards it, causing the hammer to strike the bell.

Yogita Ingle 4 years, 11 months ago

An electric bell is a mechanical bell that functions by means of an electromagnet. When an electric current is applied, it produces a repetitive buzzing or clanging sound.

ANSWER

How do an electronic iron and a kettle work?

Posted by Aishwarya Bips 4 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 4 years, 11 months ago

Electric Iron:

Mica is an insulator that is placed between the metal part and the coil in an iron. The coil becomes heated with the passage of current which is then transferred to the metallic part through mica. Finally, the metal part becomes heated which is then used for ironing clothes.

ANSWER

In amoeba who secrete digestive enzymes

Posted by Jinam Khandhar 4 years, 11 months ago

CBSE > Class 07 > Science

3 answers

Aasma Singla 4 years, 11 months ago

Digestive juices and by process of diffusion

Yogita Ingle 4 years, 11 months ago

When the food particle is completely trapped inside its vacuole amoeba secretes its digestive enzymes and digests the food.

The digestive enzymes are secreted into the food vacuole in amoeba to break down the food.

Gsp Pita 4 years, 11 months ago

Digestive juice

ANSWER

A car moves with a speed of 40km/h for 15 minutes and then with a speed of 60km/h for next 15 minutes. The total distance covers by the car is: (i) 100 km. (ii) 25 km (iii) 15 km. (iv) 10 km

Posted by Devansh Bhayani 4 years, 11 months ago

CBSE > Class 07 > Science

2 answers

Yogita Ingle 4 years, 11 months ago

Car's speed = 40 km/h
Time = 15 mins. = 0.25 hrs.
Distance = Speed × Time = (40 × 0.25) km = 10 km.
Car's speed = 60 km/h.
Time = 15 mins. = 0.25 hrs.
Distance = Speed × Time = (60 × 0.25) km = 15 km.
So, Total distance travelled = (10+15) km = 25 km

3Thank You

Devansh Bhayani 4 years, 11 months ago

Ans. Is 25 km

ANSWER

How can we conserve wildlife and forest

Posted by Babita Saini 4 years, 11 months ago

CBSE > Class 07 > Science

2 answers

Laxmisingh Raj 4 years, 11 months ago

We can save wildlife by saving forest because forest is home of animals

Yogita Ingle 4 years, 11 months ago

We should conserve forests because they are essential for us in the following terms:

Forest provide us with oxygen, they cause rainfall.
Forest prevents soil erosion.
Plants are dependent on animals and birds for their pollination and seed dispersal.
Forests provide us with various medicines.
Various forest products are used as raw materials in industries.

Wildlife is the part and parcel of the ecosystem. They play a major role in maintaining the ecological balance. Some animals also help in cleaning the environment. We have to conserve the wildlife due to following reasons

They are the consistent element of the nature
Ecological balance is maintained by these wildlife community
Some species are extinct and some are in the urge of extinction
Endangered species must be protected
Wildlife have the equal rights to stay on this planet

ANSWER

When the current is switched on through a wire a compass needle kept nearby get deflected from its north - South position explain

Posted by 𝓼𝓷𝓮𝓱𝓪 𝓢𝓾𝓶𝓪𝓷 4 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Gaurav Seth 4 years, 11 months ago

The needle of a compass is a tiny magnet, which points in the north-south direction. When a magnet is brought close to it, the needle gets deflected. When an electric current passes through a wire, it behaves like a magnet. This magnetic effect of the electric current makes the compass needle deflect from the north-south direction.

ANSWER

Which colour absobs minimum radiation

Posted by Pragati Bhawsar 4 years, 11 months ago

CBSE > Class 07 > Science

4 answers

Aasma Singla 4 years, 11 months ago

Black

𝓼𝓷𝓮𝓱𝓪 𝓢𝓾𝓶𝓪𝓷 4 years, 11 months ago

Red is the lowest energy visible light and violet is the highest. A solid object has color depending on the light it reflects. If it absorbs light in the red and yellow region of the spectrum, it will have a blue color.

Newscope Jimmyhero 4 years, 11 months ago

Black

Yogita Ingle 4 years, 11 months ago

If you consider it a color, black absorbs the most heat. A black object absorbs all wavelengths of light and reflects none. Objects that are white, on the other hand, reflect all wavelengths of light and therefore absorb the least heat.

ANSWER

Choose the statement which is not correct in the case of an electric fuse. Fuse protect appliances from Short circuit and Overloading. There is a maximum limit on the current which can safely flow through the electric circuits There is a minimum limit on the current which can safely flow in the electric circuits If a proper fuse is inserted in a circuit it will melt if current exceeds the safe limit

Posted by Harsh Bhati Vii C Roll No. 13 4 years, 11 months ago

CBSE > Class 07 > Science

1 answers

𝓼𝓷𝓮𝓱𝓪 𝓢𝓾𝓶𝓪𝓷 4 years, 11 months ago

In case of electric fuse, there is only a maximum limit on the current which can safely flow in the electric circuits. There is a minimum limit on the current which can safely flow in the electric

ANSWER

Blood defination

Posted by Bharat Parents Singh 4 years, 11 months ago

CBSE > Class 07 > Science

4 answers

Aasma Singla 4 years, 11 months ago

The fluid that transport from the heart to all parts

Smriti Gupta 4 years, 11 months ago

fluid that flow in vessel and carry nutrients, oxygen and take away carbon dioxide

Sarita Kumari 4 years, 11 months ago

Fuild that flow in vessel and carry nutrients, oxygen and take away carbon dioxide

𝓼𝓷𝓮𝓱𝓪 𝓢𝓾𝓶𝓪𝓷 4 years, 11 months ago

Blood, fluid that transports oxygen and nutrients to the cells and carries away carbon dioxide and other waste products

ANSWER

Fluid meaning

Posted by Ananya Sharma 4 years, 11 months ago

CBSE > Class 07 > Science

2 answers

Smriti Gupta 4 years, 11 months ago

taral

𝓼𝓷𝓮𝓱𝓪 𝓢𝓾𝓶𝓪𝓷 4 years, 11 months ago

Taral

ANSWER

Water holding capacity

Posted by Manoj Patwal 4 years, 11 months ago

CBSE > Class 07 > Science

4 answers

Aasma Singla 4 years, 11 months ago

Depend on capacity of soil that how much it can retain. Clayey soil absorb more water and sandy soil percolate more water.

Newscope Jimmyhero 4 years, 11 months ago

Clayey Soil

𝓼𝓷𝓮𝓱𝓪 𝓢𝓾𝓶𝓪𝓷 4 years, 11 months ago

Water Holding Capacity is the ability of a certain soil texture to physically hold water against the force of gravity. It does this by soil particles holding water by the force of cohesion

Gaurav Seth 4 years, 11 months ago

Simply defined soil water holding capacity is the amount of water that a given soil can hold for crop use.

Water holding capacity is the amount of water that a given soil can hold for crop use.

Soils that hold generous amounts of water are less subject to leaching losses of nutrients or soil applied pesticides.

ANSWER

What are ventilators

Posted by Hacker A1 4 years, 11 months ago

CBSE > Class 07 > Science

3 answers

Aasma Singla 4 years, 11 months ago

Ventilators are the machines that convert warm air to cool air that's why they are located upward of room.

Hacker A1 4 years, 11 months ago

One more answer that it help in homes for ventilation think that air is come from windows and there is no ventilators than that air became hot and it enjured our lungs and heart

Hacker A1 4 years, 11 months ago

Ventilators are machines which is used in hospital to patient which is not able to breath physically than ventilators are used

ANSWER

Seed dispersal take place by means of __________ , ___________ and _____________ .

Posted by 𝓼𝓷𝓮𝓱𝓪 𝓢𝓾𝓶𝓪𝓷 4 years, 11 months ago

CBSE > Class 07 > Science

3 answers

Pragati Bhawsar 4 years, 11 months ago

विच कलर एपिसोड मिनिमम रेडिएशन प्लीज

Rachna Bhagat 4 years, 11 months ago

Wind,Water and Insects.

Gaurav Seth 4 years, 11 months ago

Dispersal of seed takes place by various means such as wind, water, insects, animals and birds. The seeds dispersed by wind are light and smaller in size. So, that it may be carried by wind easily. The water dispersed seeds are generally floating in nature.

ANSWER

During exhalation, the ribs ______________ .

Posted by 𝓼𝓷𝓮𝓱𝓪 𝓢𝓾𝓶𝓪𝓷 4 years, 11 months ago

CBSE > Class 07 > Science

5 answers

Nishtha Parmar 4 years, 11 months ago

During exaltation ribs move down wards

Aasma Singla 4 years, 11 months ago

Moves upward and during inhalation downward.

Rachna Bhagat 4 years, 11 months ago

During exhalation the ribs move downward and inward.

Bharat Parents Singh 4 years, 11 months ago

Moves downwards

Gaurav Seth 4 years, 11 months ago

During exhalation, the ribs move downwards

During exhalation, the diaphragm moves up and ribs move downwards and inwards, decreasing the space in the chest cavity, this increases the air pressure inside the lungs and forces the air out of the lungs.

ANSWER

an electrician carrying out some repairs in your house. he want to replace a fuse by a piece of wire. would you agree give the reason for your response .

Posted by 𝓼𝓷𝓮𝓱𝓪 𝓢𝓾𝓶𝓪𝓷 4 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Gaurav Seth 4 years, 11 months ago

No, the electrician should not be allowed to replace the fuse in the house with a piece of wire. This is because every wire cannot be used as a fused filament. A fused filament must have a low melting point such that it could melt and break in response to a large amount of current. Most of the wires have high melting points and hence a wire cannot be used to replace the fuse.

ANSWER

What is conservation forest

Posted by Sunil Kumar 4 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Gaurav Seth 4 years, 11 months ago

Forest conservation is the practice of planning and maintaining forested areas for the benefit and sustainability of future generations. When we conserve forests, we conserve soil by preventing soil erosion. They also maintain the fertility of soil. Similarly, trees in the forest provide shelter and safety to animals. They also provide food to wildlife.

ANSWER

राम, लता, पुष्प शब्दरूप लिखे.... Help me

Posted by Prabhat Kumar 4 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Rudra Chetariya 4 years, 11 months ago

but sorry i don't like sans so i don't matter

ANSWER

explain all the forms of water and their interconversion

Posted by Manika Sehgal 4 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 4 years, 11 months ago

When heat energy is supplied to ice it changes into water and then to vapor. If we cool the steam it gets converted into water and further cooling of water changes into ice.
Here the heat energy is used up in changing the state of matter. the heat is used to increase the kinetic energy of the particles of ice to such an extent that they break away from the rigid lattice structure of the solid form, ice, and move around freely to form the liquid form, water. So, until all the ice has melted, the heat absorbed does not raise the temperature of the ice-water mixture. In the same way the temperature does not change while a liquid is boiling. This heat, which does not raise the temperature of the body, is called Latent Heat.

ANSWER

Explain why there is a need of variety of animal and plant in a forest.

Posted by 𝓼𝓷𝓮𝓱𝓪 𝓢𝓾𝓶𝓪𝓷 4 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 4 years, 11 months ago

A greater variety of plants and animals in the forests helps it to regenerate and grow. Greater variety of plants means more food and habitat for the herbivores. An increase in herbivores means more food for carnivores. Decomposers help to maintain the supply of nutrients to the soil and to the growing plants. This wide variety makes forest a dynamic living entity.

ANSWER

What is sludge? Explain how it is treated.

Posted by 𝓼𝓷𝓮𝓱𝓪 𝓢𝓾𝓶𝓪𝓷 4 years, 11 months ago

CBSE > Class 07 > Science

2 answers

Sanu Singh 4 years, 11 months ago

In sewage treatment plants, the residue that accumulates is called sludge. It is treated by anaerobic bacteria. Complete answer: ... Using a skimmer, sludge is collected and then transported to a tank where it is decomposed for biogas processing by anaerobic bacteria.

Yogita Ingle 4 years, 11 months ago

Solids like faeces settle at the bottom while treating sewage, and this material is called as sludge. Sludge can be treated as follows

Sludge is removed using a skimmer and then transferred to a tank where it is decomposed by anaerobic bacteria to produce biogas.

ANSWER

Plz tell me all answers of set 1 question paper of science. Last year 2019.. It is urgent.

Posted by Prabhat Kumar 4 years, 11 months ago

CBSE > Class 07 > Science

2 answers

Rudra Chetariya 4 years, 11 months ago

can hlp sorry

Rudra Chetariya 4 years, 11 months ago

google

ANSWER

Different between an element, a compound.

Posted by Rajarethinam R. Sangamithra 4 years, 11 months ago

CBSE > Class 07 > Science

3 answers

Aasma Singla 4 years, 11 months ago

Elements are those which doesn't have any fixed ratio and have one substance. Like oxygen Compounds are those which have fixed ratio and can be made from two or more substances. Like water

𝓼𝓷𝓮𝓱𝓪 𝓢𝓾𝓶𝓪𝓷 4 years, 11 months ago

An element is a material that consists of a single type of atom. Each atom type contains the same number of protons. Chemical bonds link elements together to form more complex molecules called compounds

Yogita Ingle 4 years, 11 months ago

<th>Sl. No.</th> <th>Differentiating Property</th> <th>Element</th> <th>Compound</th>

1	Definition	Elements are pure substances which are composed of only one type of atom.	Compound are substances which are formed by two or more different types of elements that are united chemically in fixed proportions.
2	Total Numbers	There are nearly 118 elements (at present) of which nearly 94 occur naturally on Earth.	Compounds are almost endless.
3	Types	Elements are classified as either metals, nonmetals or metalloids.	Compounds are classified according to their bonds which can be ionic, molecular or metallic.
4	Examples	Some of the examples of elements are Iron, Copper, Gold, etc.	A few examples of compounds are NaOH, NaCl, etc.
5	Representation	Elements are represented by symbols and numbers. For example, Sodium is represented by Na.	Compounds are represented by their chemical formula. For example, salt is represented by the formula NaCl.

ANSWER

write the function of bar screen in a wastewater treatment plant.

Posted by Prabhat Kumar 4 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 4 years, 11 months ago

Bar screens are used to remove large objects like rags, sticks, cans, plastic packets napkins, etc. in wastewater treatment plant.

ANSWER

What are the decomposers? Name any two of them.

Posted by Prabhat Kumar 4 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 4 years, 11 months ago

The micro-organisms that decompose/ convert the dead remains of plants and animals to humus are called decomposers. The two common examples of decomposers are bacteria and fungi. They play an important role in clearing the debris of dead remains of plants and animals and convert them into humus which enriches the nutrients of the soil.

ANSWER

Example, how groundwater is recharged ?

Posted by Prabhat Kumar 4 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 4 years, 11 months ago

Recharging of groundwater takes place by the rainwater and water present in the water source like river and ponds. The water tends to seep through the soil and fill the empty spaces and cracks below the ground. That’s how groundwater gets recharged.