Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Niharika Sathwika 5 years, 1 month ago
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Posted by Mithun Paneer 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
- Soda-acid fire extinguishers contain sodium bicarbonate and sulphuric acid.
- It is the most effective house-hold fire extinguisher.
- It consists of a strong iron vessel with a side discharge nozzle. The iron vessel is filled with sodium bicarbonate solution.
- A small glass bottle, filled with sulphuric acid is supported inside the iron vessel. A knob is fixed just above this bottle.
- On striking the knob, the acid bottle breaks open into the sodium bicarbonate solution. The sulphuric acid reacts with sodium bicarbonate to form sodium sulphate, water and carbon dioxide.
Posted by Niharika Sathwika 5 years, 1 month ago
- 2 answers
Swati Garg 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
Frictional Force is a force that acts on all moving objects by the surface which it is in contact with. Eg: A ball rolling on the ground encounters friction by the ground surface and it eventually comes to a halt. When the rowing of the boat has stopped, the boat comes to a stop because of the frictional force exerted by water on it. The Frictional force is always in the direction opposite to the applied force.
Gravitational force is a force exerted by the earth on all objects on it. When a ball is thrown up, it falls to the ground because of gravitational force. The water from a tap always flows downwards because of gravitational force.
Posted by Aditya Thakur 5 years, 1 month ago
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❖Mʀ᭄ ℟ᴜđʀ₳★ᶠᶠ 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
Antibiotics are medicines produced by certain micro-organisms to kill other disease-causing micro-organisms. Precautions to be taken while using antibiotics are:
i. Antibiotics should be taken under the supervision of a well qualified doctor.
ii. Course (intake) of antibiotics should be completed as prescribed by the doctor.
iii. Antibiotics should be taken in the right amount and at the right time. A wrong dose of antibiotics makes the drug ineffective. Also, excessive consumption of drugs may kill the useful bacteria present in our body.
Posted by Dinesh Gujjar 5 years, 1 month ago
- 5 answers
Yogita Ingle 5 years, 1 month ago
Iron Symbol Fe
Iron is a metal, an element of group VIII of the periodic table. It is a lustrous, ductile, malleable, silver-grey in colour. It is the tenth most abundant element in the universe. It is found in a major amount at the core of the Earth in a molten form.
Posted by Prachi Choudhary 5 years, 1 month ago
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Ayush Dixit 5 years, 1 month ago
Posted by Akshaya Reddy Reddygaari G8 5 years, 1 month ago
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Gaurav Seth 5 years, 1 month ago
- The process of loosening and turning the soil is called
(a) Broadcasting
(b) Irrigation
(c) Ploughing
(d) Levelling
- The organic substance obtained from dead plants and animal wastes is
(a) Manure
(b) Fertilizer
(c) Irrigation
(d) Agriculture
- In which of the following methods of irrigation rotating nozzles are used?
(a) Moat
(b) Drip system
(c) Chain Pump
(d) Sprinkler system
- The management and care of farm animals by humans for profit is known as
(a) Granary
(b) Animal Husbandry
(c) Poultry farm
(d) Warehouse
- The process of separating grain from chaff is called
(a) Threshing
(b) Weeding
(c) Sowing
(d) Winnowing
- Weeds can be removed by using.
(a) Pesticides
(b) Fungicides
(c) Weedicides
(d) Bactericides
- The conversion of nitrogen into nitrates is known as
(a) Nitrogen fixation
(b) Ammonification
(c) Nitrate Assimilation
(d) Nitrogen cycle
- Animals like horse, donkey that carries load are called
(a) Drought species
(b) Load carrying Animals
(c) Dairy Animals
(d) Draught Animal
- Raising of fish in inland waters and coastal waters are called
(a) Pisciculture
(b) Fishery
(c) fish culture
(d) harvesting
Answers
- (c) Ploughing
- (a) Manure
- (d) Sprinkler system
- (b) Animal Husbandry
- (a) Threshing
- (c) Weedicides
- (a) Nitrogen fixation
- (b) Load carrying Animals
- (a) Pisciculture
Posted by Kanha Mahala 5 years, 1 month ago
- 3 answers
Amrit Kumar Narayan 5 years, 1 month ago
Gaurav Seth 5 years, 1 month ago
Viruses:
- Viruses are smaller than any known cell.
- Viruses can only be seen with electron microscope.
- Viruses can reproduce only inside the bodies of other organisms, which mean they need a host.
- A virus is like a non- living thing outside the body of other organisms. Therefore, it is a borderline between a living and a non- living thing.
Posted by Amrita Sahoo 5 years, 1 month ago
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Posted by Avneet Chouhan 5 years, 1 month ago
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Posted by Pili M 5 years, 1 month ago
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Posted by Ridhima Bansal 5 years, 1 month ago
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Meghna Thapar 5 years ago
The nucleus is a membrane-bound organelle that contains genetic material (DNA) of eukaryotic organisms. As such, it serves to maintain the integrity of the cell by facilitating transcription and replication processes. It's the largest organelle inside the cell taking up about a tenth of the entire cell volume.
Posted by Sarika Yadav 5 years, 1 month ago
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Gaurav Seth 5 years, 1 month ago
(i) when magnet is pushed near a bar magnet then it induces current due to electromagnetic induction.
(ii) When the bar magnet is withdrawn from inside the coil of the insulated copper wire again the current is induced in the coil but this time it is in reverse direction.
(iii) When a bar magnet is held stationary inside the coil then no current is induced that’s why galvanometer will show no deflection.
Posted by Shakthi Surya 5 years, 1 month ago
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Kriti Kotiyal 5 years ago
Posted by Deva Ram 5 years, 1 month ago
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Gaurav Seth 5 years, 1 month ago
Farmers face problem such as water shortage,low fertility,pest attack,disease attack,low yield and variety of monetary problems.
Farmers should opt for water saving micro-irrigation technique like drip and sprinkle irrigation.
To tackle low fertility farmers should incorporate biofertilizers like rhizhobium, azospiriilum, azotobacter, mycorhizae along with compost,manures and vermicompost.
To tackle disease, pest and low yield, farmers should adopt hybrid or transgenic variety which are innately disease and pest resistant and provide for good yield .
Posted by Poornima B 5 years, 1 month ago
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Posted by Om Patil 5 years, 1 month ago
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Posted by Shakthi Surya 5 years, 1 month ago
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Shakthi Surya 5 years, 1 month ago
Posted by Hema Kalakoti 5 years, 1 month ago
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Gaurav Seth 5 years, 1 month ago
False
- We can bend thermoplastics easily.On heating the thermoplastics, it becomes softened and can be moulded and reshaped easily.
- Thermosetting plastic cannot be easily bent but if we force to bend, it will break.
- On heating thermosetting plastics, it cannot be softened. This is the reason it cannot be reshaped once it is moulded.
- For example: - Bakelite and Melamine
Posted by Kartika Nandre 5 years, 1 month ago
- 3 answers
Gaurav Seth 5 years, 1 month ago
- Synthetic polymers have been widely used to replace many other building materials such as stones, metals, wood, clay, cotton, wool and natural rubber.
- Synthetic polymers are very stable. Unlike metals, wood or paper, they do not rust, rot or decay easily in the presence of water, oxygen or other chemicals or in sunlight.
- Figure shows the various uses of synthetic polymers.
Posted by Avinash Engoli 5 years, 1 month ago
- 3 answers
Yogita Ingle 5 years, 1 month ago
Esters are sweet smelling compounds.
They are formed by the reaction of a carboxylic acid with an alcohol in the presence of conc. sulphuric acid.
For example, ethyl ethanoate is prepared by reacting ethanoic acid and ethanol in the presence of conc.sulphuric acid.
Posted by Avinash Engoli 5 years, 1 month ago
- 1 answers
Yogita Ingle 5 years, 1 month ago
Advantages....
1- They do not shrink.
2- They are quick drying and need very little or no ironing.
3- They last longer as compared the fabrics made from natural fibres.
Disadvantages...
1- Synthetic fibres do not absorb water or sweat. In hot and humid weather therefore the clothes made of synthetic fibre stick to the body and make the wearer uncomfortable.
2- Synthetic fibres melt and burn easily.
3- Synthetic fibres on catching fire shrink forming beads which stick to the skin. Therefore it is not advisable to use clothes made from synthetic fibres while working near flam/fire, such as,in kitchen.
4- Synthetic fibres are nonbiodegradable . Therefore they cause soil pollution.
Posted by Avinash Engoli 5 years, 1 month ago
- 1 answers
Gaurav Seth 5 years, 1 month ago
Octopuses have blue blood. To survive in the deep ocean, octopuses evolved a copper rather than iron-based blood called hemocyanin, which turns its blood blue. This copper base is more efficient at transporting oxygen than hemoglobin when water temperature is very low and not much oxygen is around.
Posted by Prerana Ingale 5 years, 1 month ago
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Posted by Sonal Kumrawat 5 years, 1 month ago
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Jyotika Tirthani 5 years, 1 month ago
Posted by Shreyas Patil 5 years, 1 month ago
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Srishti Majumder 5 years, 1 month ago
Gaurav Seth 5 years, 1 month ago
- Bandipur National Park in Karnataka
- Bandhavgarh National Park in Madhya Pradesh
- Bhadra Wildlife Sanctuary in Karnataka
- Chinnar Wildlife Sanctuary in Kerala
- Corbett National Park in Uttarakhand
- Dandeli Wildlife Sanctuary in Karnataka
- Dudhwa National Park in Uttar Pradesh
- Gir National Park and Sasan Gir Sanctuary in Gujarat
- Hemis National Park in Jammu & Kashmir
- Kanha National Park in Madhya Pradesh
- Kaziranga National Park in Assam
- Keoladeo Ghana National Park in Bharatpur, Rajasthan
- Manas National Park in Assam
- Nagarhole National Park in Karnataka
- Panna National Park in Madhya Pradesh
- Periyar National Park in Kerala.
- Pench National Park in Madhya Pradesh
- Ranthambore National Park in Rajasthan
- Sariska National Park in Rajasthan
- Tadoba Andhari Tiger Reserve in Maharashtra
- The Great Himalayan National Park in Himachal Pradesh
Yogita Ingle 5 years, 1 month ago
- Corbett National park(Uttarakhand)
- Kanha National park(Madhya Pradesh)
- Ranthambore National park(Rajasthan)
- Gir National park(Gujarat)
- Kaziranga National park(Assam)
- Sunderbans National park(West bengal)
- Bandipur National park(Karnataka)
- Ranthambore National Park (Rajashtan)
- Keoladeo National Park (Rajashtan)
Posted by Dhanshri Shewale 5 years, 1 month ago
- 1 answers
Yogita Ingle 5 years, 1 month ago
- Take an iron stand with a clamp and a cotton thread of about 65 cm length.
- Tie the thread to the clamp so that it hangs freely as shown in figure.
- At the free end suspend a pan so that weight can be placed in it.
- Add weight one by one till the thread breaks.
- Note down the total weight required to break the thread. This weight indicates the strength of the fibre.
- Repeat the same activity with threads of wool, silk and nylon.
- You will observe that the weight required to break the threads of wool, silk and^nylon is more than cotton. So, synthetic fibres are stronger than cotton.
Posted by Bibin Binoy 5 years, 1 month ago
- 5 answers
Sonal Kumrawat 5 years, 1 month ago
Srishti Majumder 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
Pathogens are referred to any tiny organism, like virus or bacterium that can cause diseases in a host.
Diseases caused due to pathogens vary depending on the type of pathogen. For example, diseases caused by virus pathogens include common cold, yellow fever, flu, dengue fever etc.
Dhanshri Shewale 5 years, 1 month ago
Posted by Clagend Yt 5 years, 1 month ago
- 1 answers
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Gaurav Seth 5 years, 1 month ago
Mass
1. Refers to the quantity of matter in an object.
2. Mass is independent of gravity.
3. It is the result of comparison of an unknown mass with a known mass called standard mass.
4. Mass is an extensive property. The fundamental unit of mass in the metric system is gram.
5. It is measured in kg in SI units.
6. Mass resists motion.
7. It is a scalar quantity.
8. It is measured with the help of physical balance
Weight
1. Is the force of gravity on an object. Weight = Mass X Acceleration due to gravity
2. Weight is dependent of gravity.
3. Gravity is not constant throughout the earth. So weight may vary from one place to the other.
4. When gravity is constant, mass is directly proportional to weight.
Mass α weight, when gravity is constant.
5. It is measured in newton in SI units.
6. Weight produces motion.
7. It is a vector quantity.
8. It is measured by using a spring balance
2Thank You