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Ask QuestionPosted by Ritu Solanki 5 years, 10 months ago
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Posted by Anwesha Samantaray 5 years, 10 months ago
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Posted by Anwesha Samantaray 5 years, 10 months ago
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Posted by Charan Nagidi 5 years, 10 months ago
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Posted by Mrs.Asifa Tahir 5 years, 10 months ago
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Meghna Thapar 5 years, 10 months ago
The electroscope is a device for detecting electric charge on an object.
An electroscope has a brass rod passing through a tight fitting cork in a glass bottle. A pair of thin aluminum leaves is attached to the lower end of the brass rod. To protect the aluminum leaves from external electric charge the lower half of the bottle is lined with tin foil which is ‘earthed’ by connecting it to the table.
When a charged rod is touched to the metal disc, the charge is transferred to the aluminum leaves and they diverge.
Posted by Raj Negi 5 years, 10 months ago
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Alvira Usman Bhai 5 years, 10 months ago
Sadhna Anand 5 years, 10 months ago
Posted by Uma Chandra 5 years, 10 months ago
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Niyati Niyati 5 years, 10 months ago
Posted by Rajesh Jaiswal 5 years, 10 months ago
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Posted by Sahil Beck 5 years, 10 months ago
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Meghna Thapar 5 years, 10 months ago
Polyester is a synthetic fibre made up of many repeating units of esters. Example – Terylene is popular polyester.
Posted by Sahil Beck 5 years, 10 months ago
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Meghna Thapar 5 years, 9 months ago
Nylon 6 is made from one monomer which has 6 carbon atoms whereas Nylon 6,6 is made from 2 monomers with each one having 6 carbon atoms . Nylon 66 is synthesized by polycondensation of hexamethylenediamine and adipic acid. Equivalent amounts of hexamethylenediamine and adipic acid are combined with water in a reactor.
Posted by Sahil Beck 5 years, 10 months ago
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Meghna Thapar 5 years, 10 months ago
Rayon is regarded as artificial silk. Rayon is a man-made fibre prepared from a natural raw material called cellulose by chemical treatment. It is obtained by the chemical treatment of wood pulp.
Posted by Archita Yadav 5 years, 10 months ago
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Posted by Aquib Khan 5 years, 10 months ago
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Meghna Thapar 5 years, 9 months ago
The Scheduled Castes and Tribes (Prevention of Atrocities) Act, 1989 is an Act of the Parliament of India enacted to prevent atrocities against scheduled castes and scheduled tribes. The Act is popularly known as the SC/ST Act, POA, the Prevention of Atrocities Act, or simply the Atrocities Act.
It was enacted when the provisions of the existing laws (such as the Protection of Civil Rights Act 1955 and Indian Penal Code) were found to be inadequate to check these crimes (defined as 'atrocities' in the Act)[1]. Recognising the continuing gross indignities and offences against Scheduled Castes and Tribes, the Parliament passed the ‘Scheduled Castes and Schedule Tribes (Prevention of Atrocities) Act 1989.
The preamble of the Act also states that the Act is:
“to prevent the commission of offences of atrocities against the members of Scheduled Castes and Tribes, to provide for Special Courts for the trial of such offences and for the relief and rehabilitation of the victims of such offences and for matters connected therewith or incidental thereto.”
Posted by Shailesh Kala 5 years, 10 months ago
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Posted by Dev Jivani 5 years, 10 months ago
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Posted by Dev Jivani 5 years, 10 months ago
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Meghna Thapar 5 years, 9 months ago
Governments consist of the institutions that make and enact policies to govern people within a society or nation. The United States government is comprised of the executive, judicial, and legislative branches, as well as federal and state administrative agencies.
Posted by Kajal Antil 5 years, 10 months ago
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Ashish Ahirwar 5 years, 10 months ago
Posted by Divya Chaudhary 5 years, 10 months ago
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Posted by Shiney Virdi 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
Physical properties of metal
- Metals are solid except mercury that is found in liquid state at room temperature.
- They are hard and tough except sodium and potassium that can be cut with a knife.
- They are lustrous i.e. they shine in light because metals possess free electrons that vibrates on getting in contact with light.
- They have high melting points except caesium and gallium have very low melting point.
- They are good conductors of heat and electricity. The best conductors of electricity are silver and copper whereas lead and mercury are comparatively poor conductors.
- They have high density except alkali metals like lithium, sodium and potassium.
- They are malleablee. they can be beaten into thin sheets. For instance, the aluminium foil we use to pack food is manufactured by beating the aluminium metal into thin sheets. This a characteristic property of metal.
- They are ductilee. they can be drawn into wires. For instance. We all are familiar with copper and aluminium wires. It is due to their characteristic property of ductility that these metals can be drawn into wires.
- They are sonorouse. they produce a ringing sound when struck against a hard object. For instance, your school bells are made of metal that produces a ringing sound after the period is over when struck hard by a hammer.
Posted by Roshan Rana 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
The process of reproduction is not essential for the survival of an individual but reproduction is essential for the continuation of a species.
• Modes of Reproduction:
Like plants, animal also reproduce by (i) Sexual reproduction and (ii) Asexual reproduction.
Posted by Roshan Rana 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
The process of reproduction is not essential for the survival of an individual but reproduction is essential for the continuation of a species.
• Modes of Reproduction:
Like plants, animal also reproduce by (i) Sexual reproduction and (ii) Asexual reproduction.
Posted by Shivashish Kumar 5 years, 10 months ago
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Posted by Kavya Karna 5 years, 10 months ago
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Posted by Gajendra Singh 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
Terminating decimals: Terminating decimals are those numbers which come to an end after few repetitions after decimal point.
Example: 0.5, 2.456, 123.456, etc. are all examples of terminating decimals.
(i) <nobr aria-hidden="true">1/2</nobr> is a rational fraction of form <nobr aria-hidden="true">p/q</nobr>. When this rational fraction is converted to decimal it becomes 0.5, which is a terminating decimal fraction.
Non terminating decimals: Non terminating decimals are those which keep on continuing after decimal point (i.e. they go on forever). They don’t come to end or if they do it is after a long interval.
For example:
π = (3.141592653589793238462643383279502884197169399375105820974.....) is an example of non terminating decimal as it keeps on continuing after decimal point.
(i) <nobr aria-hidden="true">1/3</nobr>is a rational fraction of form <nobr aria-hidden="true">p/q</nobr>. When we convert this rational fraction into decimal, it becomes 0.333333… which is a non terminating decimal.
Posted by Kunal Kaushik Thakuria 5 years, 10 months ago
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Meghna Thapar 5 years, 10 months ago
When an object rolls over the surface of another object, the resistance to its motion is called rolling friction. Rolling friction is much less than sliding friction because an object rolls over the surface of another object.
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