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Ask QuestionPosted by Tanishka Chakraborty 5 years, 4 months ago
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Amrita Kumari 5 years, 4 months ago
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Ayushman Chaudhary 5 years, 4 months ago
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? Yang ? 5 years, 4 months ago
Yogita Ingle 5 years, 4 months ago
It fails to explain the acidic nature of substances like CO2, SO2,SO3 etc which do not have hydrogen and similarly it also fails to explain the basic nature of substances like NH3, CaO, MgO etc which do not have -OH group.
It fails to explain the acidic and basic behaviour of substances in solvents other than water such as ammonia,alcohol.etc
The theory fails to explain why strong electrolytes like nitric acid (HNO3) are completely ionized in aqueous solution whereas weak electrolytes like acetic acid (CH3COOH) are ionized to a small extent only.
Posted by Ranjith Nair 5 years, 4 months ago
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Meghna Thapar 5 years, 2 months ago
- Magnetic Field due to a Current carrying Conductor:
Magnetic Field due to a Straight Current-carrying Conductor:
The magnetic field lines around a straight conductor carrying a current are concentric circles.
The direction of a magnetic field is given by the Right-Hand Thumb Rule.
Right-Hand Thumb Rule:
Imagine that you are holding a straight current-carrying conductor in your right hand such that the thumb points towards the direction of the current. Then, your curved fingers wrapped around the conductor point in the direction of the field lines of the magnetic field.
The magnitude of the magnetic field due to a straight current-carrying conductor at a given point is
- Directly proportional to the current flowing through the conductor.
- Inversely proportional to the distance of that point from the conductor.
Magnetic Field due to a Current-carrying Circular Coil:
- The magnetic field lines near the coil are nearly circular or concentric.
- The magnetic field at the centre of the coil is maximum and almost uniform.
- Looking at the face of a coil, if the current around it is in the clockwise direction, then it faces the South Pole. If the current around it is in the anticlockwise direction, then it faces the North Pole. This is called the Clock rule.
- The magnitude of a magnetic field at the centre of the coil is
- Directly proportional to the current flowing through it
- Inversely proportional to the radius of the coil
- Directly proportional to the number of turns of the coil
Magnetic Field due to a Current-carrying Solenoid:
Solenoid is a long coil containing a large number of close turns of insulated copper wire. The magnetic field produced by passing the current through the coil. Magnetic field produced by the solenoid is similar to the magnetic field produced by the bar magnet. The magnetic field lines in the solenoid are parallel.
The magnetic field inside a solenoid is uniform.
In accordance with the Clock rule, the end of the solenoid at which the current flows in the anticlockwise direction behaves as a North Pole, while the end at which the current flows in the clockwise direction behaves as a South Pole.
The magnitude of the magnetic field inside the solenoid is directly proportional to the
- Current flowing through it
- Number of turns per unit length of the solenoid
Posted by Shreya Jamwal 5 years, 4 months ago
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Posted by Shreya Jamwal 5 years, 4 months ago
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Vaishali Raj 5 years, 4 months ago
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Posted by Charvi Sangwan 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Electric potential is the work done per unit charge in bringing the charge from infinity to that point against electrostatic force.
In a conductor, electrons flow only when there is a difference in electric pressure at its ends. This is also called potential difference. In a circuit, this potential difference is created by a battery.
Posted by Khush Kaur 5 years, 4 months ago
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Archisha Kar 5 years, 4 months ago
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Posted by Yash Gupta 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
'Red shift' is a key concept for astronomers. The term can be understood literally - the wavelength of the light is stretched, so the light is seen as 'shifted' towards the red part of the spectrum.
Posted by Yash Gupta 5 years, 4 months ago
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Shagun Saini 5 years, 4 months ago
Posted by Shreyansh Pandey 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
Cutting:A small part of a plant which is removed by making a cut with a sharp knife is called cutting.A cutting of parent plant having some bud on it is taken and its lower part is buried in moist soil.
For Ex:Grapes,sugarcane,bananas,cactus,bougainvillea.
Layering:A branch of plant is pulled towards the ground and a part of it is covered with moist soil leaving the tip of branch exposed above the ground.After some time new root develops from the part of branch buried in the soil.The branch is then cut off from parent plant.
For Ex:Jasmine,lemon,guava,Strawberry.
Grafting:In this the cut stem of two different plants(One with root and other without root)are joined together in such a way that the two stems join and grow as a single plant.
For Ex:Apple,apricot,peach,pear
Posted by Anurag Anand 5 years, 4 months ago
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Posted by Akshita Akshita 5 years, 4 months ago
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Aryan Singh 5 years, 4 months ago
Gaurav Seth 5 years, 4 months ago
a n s w e r
Weak base:A base which partially ionises in water and produce small amount of hydroxide ions.
For Ex: Mg ( O H ) 2, Ca ( O H ) 2
Posted by Akshita Akshita 5 years, 4 months ago
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Ayushman Chaudhary 5 years, 4 months ago
Posted by Siddharth Kumar ✔️✔️✔️ 5 years, 4 months ago
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Halak Dudiya 5 years, 3 months ago
Posted by Mohit Nipun 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
1 ) Metals with Water:
Equation :- Metal ( M ) + H₂O => MOH
Product Formed is Metal Hydroxide
2 ) Metals with Air or Oxygen:
Equation:- M + O₂ => MO₂
Product formed is Metal Oxides. They are generally basic in nature.
Oxides are of two types, Acidic Oxides and Basic Oxides.
Acidic Oxides give rise to acids when the oxides are mixed in water. Generally Non metals produce Acidic Oxides.
Basic Oxides on the other hand produce Bases when Basic Oxides are mixed with water. Generally Metals give Basic Oxides.
3 ) Metals with Acid:
Equation :- M + H⁺ ( from acid ) => Metal Salt + H₂
Posted by Satyam Lodhi Rajput 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
The hardness of water is due to the presence of soluble bicarbonates, chlorides, and sulfates of calcium and magnesium.
Posted by R K ... 5 years, 4 months ago
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Sia ? 4 years, 7 months ago
Other molecules (e.g. amino acids and tatty acids) are also obtained by animals this way. > Glucose has three main fates: immediate use to produce ATP molecules (available energy for work), storage for later ATP production, or for use in building other molecules. Storage as starch (in Plants) or glycogen (in animals).
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Yogita Ingle 5 years, 4 months ago
| Living Things | Non-Living Things |
| They possess life. | They do not possess life. |
| Living things are capable of giving birth to their young one. | Non-living things do not reproduce. |
| For survival, living things depend on water, air and food. | Non-living things have no such requirements |
| Living things are sensitive and responsive to stimuli. | Non-living things are not sensitive and do not respond to stimuli. |
| Metabolic reactions constantly occur in all living things. | There are no metabolic reactions in Non-living things. |
| Living organisms undergo growth and development. | Non-living things do not grow or develop. |
| They have a lifespan and are not immortal. | They have no lifespan and are immortal. |
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Tanishka Chakraborty 5 years, 4 months ago
1Thank You