Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Rupnarayan Yadav 5 years, 6 months ago
- 5 answers
Yogita Ingle 5 years, 6 months ago
Nitrogen is an inert gas, which stops the contents of the packet from reacting/decomposing. If they filled the packet with air or oxygen then the food would break down over time and will get decomposed. And, potato chips will be smelled and will become unedible.
꧁༒RคМคห༒꧂ . 5 years, 6 months ago
Posted by Anushka Negi 5 years, 6 months ago
- 2 answers
Arjun Kashyap 5 years, 6 months ago
Posted by Anushka Negi 5 years, 6 months ago
- 2 answers
Posted by Neelansh Garg 5 years, 6 months ago
- 3 answers
Yogita Ingle 5 years, 6 months ago
Dialysis is primarily used to provide an artificial replacement for lost kidney function (renal replacement therapy) due to renal failure. Dialysis is the artificial process of eliminating waste (diffusion) and unwanted water (ultrafiltration) from the blood. In a healthy man, kidney does this process naturally. Some people may have damaged or failed kidneys which no longer filter toxins from the blood. They do purify their blood through dialysis.
Anushka Negi 5 years, 6 months ago
Posted by Neha Patel 5 years, 6 months ago
- 2 answers
Meghna Thapar 5 years, 6 months ago
When alkali (base) reacts with metal, it produces salt and hydrogen gas. Example: Sodium hydroxide gives hydrogen gas and sodium zincate when reacts with zinc metal. Sodium aluminate and hydrogen gas are formed when sodium hydroxide reacts with aluminium metal. Hence, bases do not react with metals in the way that acids do. Bases react with acids to produce a salt and water.
Posted by Anushka Negi 5 years, 6 months ago
- 4 answers
Anushka Negi 5 years, 6 months ago
Rajan Kumar Pasi 5 years, 6 months ago
Fanishwar Goutam 5 years, 6 months ago
Posted by Adarshomprakash Vishwakarma 5 years, 6 months ago
- 0 answers
Posted by Muktid Joshi 5 years, 6 months ago
- 1 answers
Yogita Ingle 5 years, 6 months ago
Difference b/w electric charge and current are:
1.Charge is a property of elementary particles like electron and proton. Current is the rate of flow of charge.
2.Charge is a quantized quantity. its magnitude is always a multiple of the charge on a proton. Current is not a quantized quantity. it can take any value from 0 to a finite number.
3.SI unit of charge is Coulomb. The SI unit of current is Ampere.
Posted by R. Rakkesh 5 years, 6 months ago
- 2 answers
Yogita Ingle 5 years, 6 months ago
Working
- When the current begins to flow, current flows through brush X, then A to B, B to C, C to D and then to brush Y and into the battery.
- Now applying Fleming's Left Hand Rule to wire AB, Current is along AB, Magnetic Field is as shown (North-> South), the motion of the wire is downwards.
- Now applying Fleming's Left Hand Rule to wire CD, Current is along CD, Magnetic Field is as shown (North-> South), the motion of the wire is upwards.
- The rectangular coil begins to move in the anti-clockwise direction
- Note that during anti-clockwise motion, the split rings and axle also move, whereas the brushes don't move.
- After half a rotation, Wire CD and Split ring Q moves to the left. Wire AB and Split ring P moves to right. Brushes X and Y donot move.
- Now applying Fleming's Left Hand Rule to wire CD, Current is along DC. (Battery -> Split ring Q -> DC , Magnetic Field is as shown (North-> South), the motion of the wire is downwards.
- Now applying Fleming's Left Hand Rule to wire AB, Current is along BA. (Battery -> Split ring Q -> DC --> CB -> BA --> Split ring P) , Magnetic Field is as shown (North-> South), the motion of the wire is upwards.
- So, again the coil rotates in the anti-clockwise direction.
- The reversal of current in the coil results in the continous rotation of the coil. The reversal of current is achieved by the commutator rings
Posted by Arjun Kashyap 5 years, 6 months ago
- 3 answers
Gaurav Seth 5 years, 6 months ago
The sewing machine device was invented in 1790 by English inventor, Thomas Saint, but he could not advertise his invention. He designed a wooden awl to make holes in leather and canvas, thus allowing a needle and single piece of thread through to hook underneath, and forming locked chain stitches
Posted by Abhishek Kumar 5 years, 6 months ago
- 1 answers
Gaurav Seth 5 years, 6 months ago
- Liberals: They believed in a system which accepted all religions and not concentrates on a single religion. They were against dynasty rulers as well. They asked for one vote per property but did not include women in the same.
- Conservatives: They were not ready for changes and wanted to discard the idea of changes. At one point they agreed to the upcoming changes but they wanted that at the same time the past should be respected.
Posted by Arjun Kashyap 5 years, 6 months ago
- 3 answers
Gaurav Seth 5 years, 6 months ago
The process by which a new species develops from the existing species is known as speciation.
Speciation is caused due to three factors, which are:
- Geographical isolation: Caused due to reproductive isolation in separated groups of a population.
- Genetic drift: Caused due to changes in the gene flow imposed by the isolation mechanism.
- Natural selection: Caused due to genetic variation within a population of an organism.
꧁༒RคМคห༒꧂ . 5 years, 6 months ago
Posted by ꧁༒RคМคห༒꧂ . 5 years, 6 months ago
- 5 answers
Posted by Ak18 Ak18 5 years, 6 months ago
- 0 answers
Posted by Anushka Negi 5 years, 6 months ago
- 4 answers
Posted by Anushka Negi 5 years, 6 months ago
- 3 answers
Himanshu Chaudhary 5 years, 6 months ago
Arjun Kashyap 5 years, 6 months ago
Posted by Anushka Negi 5 years, 6 months ago
- 5 answers
Rajan Kumar Pasi 5 years, 6 months ago
Priya Behera 5 years, 6 months ago
Arjun Kashyap 5 years, 6 months ago
Posted by Anushka Negi 5 years, 6 months ago
- 2 answers
Gaurav Seth 5 years, 6 months ago
Arthropoda
- This is the largest group of animals
- The bodies of the organisms belonging to this group are bilaterally symmetrical and segmented.
- These organisms have an open circulatory system. Therefore the blood does not flow in a well-defined blood vessel.
- The coelomic cavity of these organisms is blood-filled.
- These organisms have jointed legs.
- Examples of organisms belonging to this group are prawns, butterflies, houseflies, spiders, scorpions and crabs.
Posted by Anushka Negi 5 years, 6 months ago
- 1 answers
Gaurav Seth 5 years, 6 months ago
Parasitic Nutrition: This mode of nutrition is the characteristic of parasites. The parasites live on of inside the body of their hosts. So, the parasites are dependent either wholly of partially on the host for nutrition e.g., plasmodium, liver flukes, Cuscuta, Ascaris etc. There are two types of parasitic plants.
Posted by Ashnoor Kamboj 5 years, 6 months ago
- 5 answers
Ashnoor Kamboj 5 years, 6 months ago
Rajan Kumar Pasi 5 years, 6 months ago
Gaurav Seth 5 years, 6 months ago
the principle that the electric current passing through a conductor is directly proportional to the potential difference across it, provided that the temperature remains constant. The constant of proportionality is the resistance of the conductor
OHM’s law states that under no same temperature, electric current flowing through an ideal conductor is directly proportional to the potential difference across its ends.
V ∝ I
V = IR, R – Resistance
- Resistance is a property of conductor to resist flow of charge through it. Its SI unit is Ohm (Ω).
R = V/I, 1 Ohm = 1 Volt/ 1 Ampere
- I = V/R denotes that Current is inversely proportional to Resistance. Hence, greater the resistance lesser will be the flow of current and vice-versa.
- A rheostat or a variable resistor is a device or a component which allows changing of resistance in a circuit keeping the voltage same.
- In a conductor, electrons are attracted by the atoms. This is a resistive force which is lower for a good conductor but very high for an insulator. A conductor having some resistance is called a Resistor.
Posted by Tannu Choudhary 5 years, 6 months ago
- 0 answers
Posted by Reha Khichdia 5 years, 6 months ago
- 2 answers
Posted by Reha Khichdia 5 years, 6 months ago
- 0 answers
Posted by Anushka Negi 5 years, 6 months ago
- 5 answers
Himanshu Chaudhary 5 years, 6 months ago
Muktid Joshi 5 years, 6 months ago
꧁༒RคМคห༒꧂ . 5 years, 6 months ago
Dev Upadhyay 5 years, 6 months ago
Posted by Ni Nanthi 5 years, 6 months ago
- 2 answers
Dev Upadhyay 5 years, 6 months ago
Posted by Sanu Manglam 5 years, 6 months ago
- 1 answers
Posted by Udit Vats 5 years, 6 months ago
- 2 answers
Sonia Mahto 5 years, 6 months ago
Muktid Joshi 5 years, 6 months ago
Posted by Saurav Kumar 5 years, 6 months ago
- 1 answers
Posted by Priyanshu Kumar 5 years, 6 months ago
- 1 answers
Posted by Saswat Rath 5 years, 6 months ago
- 2 answers
Jeny N Benny 5 years, 6 months ago
Jeny N Benny 5 years, 6 months ago
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
B.Aishwarya 203 Kalyannagar 5 years, 6 months ago
0Thank You