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Posted by Sanjeev Kumar 5 years, 11 months ago
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*Shirin? * 5 years, 11 months ago
Posted by Saniya Khan 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
Effervesence means escaping of gas with bubbles and hissing sound like CO2 escapes from soda water or coke bottle when opened.
Posted by Afeefa Ara 5 years, 11 months ago
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Madhu Verma 5 years, 11 months ago
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Mahendrada .M 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
Acids give carbon dioxide gas and respective salts along with water when they react with metal carbonates.
Metal carbonate + Acid ⇨ Salt + Carbon dioxide + Water
Examples: Hydrochloric acid gives carbon dioxide gas, sodium chloride along with water when reacts with sodium carbonate.
<i>Na2CO3 + 2HCl ⇨ 2NaCl + CO2 + H2O</i>
Posted by Anjali Rakesh 5 years, 11 months ago
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Meghna Thapar 5 years, 10 months ago
- Conventional Sources of Energy:
Conventional source of energy are the traditional source of energy which are familiar to most people are called conventional source of energy. Example - Wood, coal, etc.
- Alternate or Non-conventional Sources of Energy:
Non Renewable source of energy is can be defined as source of energy which have accumulated in nature over a very, very long time and cannot be quickly replaced when exhausted are called non-renewable source of energy. Example - Coal, nuclear energy.
Posted by Gauri Semwal 5 years, 11 months ago
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Tanya Jindal 5 years, 11 months ago
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Posted by Tanish Chimaniya 5 years, 11 months ago
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Maakhish Sai 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
Connecting the metallic body of a high powered electrical appliances to the earth wire of domestic circuit is called earthing.
In an electrical installation , an earthing system or grounding system connects specific parts of that installation with the Earth's conductive surface for safety and functional purposes. The point of reference is the Earth's conductive surface. Also in a high power handling electrical instruments, metal part of the cabinet is connected to earth by low resistance cables
Earthing is the process of transferring the immediate discharge of electricity directly to the earth plate, by means of low resistance electrical cables or wires. In case of a short circuit due to leakages arising from weak insulation or damage, the earthing wire safely removes excess electricity and passes it on to the ground. Safety to persons operating high power electrical systems is ensured by earthing.
Posted by Vinayak Kerolkar 5 years, 11 months ago
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Posted by Aakash Singh 5 years, 11 months ago
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Aashvi Agarwal 5 years, 11 months ago
Gouri Patil 5 years, 11 months ago
Yogita Ingle 5 years, 11 months ago
Catenation : The self linkage is known as catenation. The property of catenation is responsible for the occurrence of innumerable oragnic compounds.
It is the binding of an element to itself through covalent bonds to form chain or ring molecules.
Examples : Carbon is the most common element that exhibits catenation property. That means it can form long hydrocarbon chains and rings like benzene.
Sanket Arjun 5 years, 11 months ago
Kittu Bharti 5 years, 11 months ago
Posted by Rehan Ansari 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
Possible misuse:
1- it used for removing of unwanted pregenancy but people misuse this method by determining the type of a child inside womb if it is a boy then the baby is safe but if it is a girl then it leds to death by abortion and it decrease the ratio of girl and boy by which many social problems take place .
Rani Mishra ??? 5 years, 11 months ago
Posted by Prateek Singh 5 years, 11 months ago
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Posted by Nikhil Chaudhary 5 years, 11 months ago
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Diksha? 5 years, 11 months ago
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Anisha Mishra 5 years, 11 months ago
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Gouri Patil 5 years, 11 months ago
Gauri Semwal 5 years, 11 months ago
Anisha Mishra 5 years, 11 months ago
Posted by Himanshu Singh 5 years, 11 months ago
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Posted by Surjeet Kumae 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
There are two types of electric charge: positive charge and negative charge.
When you rub your feet against the carpet, negative charge is transferred to you from the carpet. The carpet will then become positively charged by the same amount.
Another example is to take two neutral objects such as a plastic ruler and a cotton cloth (handkerchief). To begin, the two objects are neutral (i.e. have the same amounts of positive and negative charge).
Posted by Samarth Mishra 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
Since, object is always placed in front of the mirror hence the sign of object is taken as negative.
Since, object is always placed in front of the mirror hence the sign of object is taken as negative.
Posted by Samarth Mishra 5 years, 11 months ago
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Diya Jain 5 years, 11 months ago
Posted by Navjot Dhaliwal 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
The information is received at the dedritic tip of a neuron. This creates an electrical impulse, which travels from dendrites to cell body and then along the axon. At the end of axon, the electrical impulse sets off the release of some chemicals, which cross the synapse to the next neuron.
Posted by Abhishek Kochar 5 years, 11 months ago
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Posted by Royal ?? Chundawat 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
Focal length of concave mirror f = -10 cm
Height of the object h<font size="2">o</font> = 2 cm
Height of the image h<font size="2">i </font>= 6 cm
Magnification m = h<font size="2">i</font>/h<font size="2">o</font> = 6/2 = 3 (erect image)
m = -v/u
3 = -v/u ⇒ v = -3u
Mirror formula: 1/v + 1/u = 1/f
1/(-3u) + 1/u = 1/(-10)
⇒ u = -20/3 = -6.7 cm
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Tanya Jindal 5 years, 11 months ago
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