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Ask QuestionPosted by ❖Mʀ᭄ ℟ᴜđʀ₳★ᶠᶠ 5 years, 3 months ago
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Posted by ❖Mʀ᭄ ℟ᴜđʀ₳★ᶠᶠ 5 years, 3 months ago
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Posted by Manoj Manoj 5 years, 3 months ago
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Posted by Khushi Sharma. 5 years, 3 months ago
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Piyush Raj Albela 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
Avoid the use of plastics as far as possible. Plastics are non-biodegradable materials. So use of plastics is harmful for our environment. The plastics cannot be finally disposed off. Thus, plastics should be avoided as far as possible.
Posted by Khushi Sharma. 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
The handle and bristle of a toothbrush should not be made of the same material as the handle of the toothbrush should be hard and strong while the bristle should be soft and flexible.
Posted by Khushi Sharma. 5 years, 3 months ago
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Vishesh Gautam 5 years, 3 months ago
Posted by Chamanpreet Singh 5 years, 3 months ago
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Soundarya More 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
Zinc is a metal rest all are non-metals. Therefore Zinc can be beaten into sheets.
Posted by Khushi Sharma. 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
| Can be Recycled | Cannot be recycled |
| Plastic chairs | Cooker handles |
| Plastic bowls | Electrical switches |
| Plastic toys | telephone |
| The plastic covering on electrical wires | |
| Carry bags | |
| Ballpoint pens |
Posted by Kanha Gupta 5 years, 3 months ago
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Posted by Vishesh Gautam 5 years, 3 months ago
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Posted by Akshaya Reddy Reddygaari G8 5 years, 3 months ago
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Vaishnavi Kumari 5 years, 3 months ago
Posted by Vaishnavi Kumari 5 years, 3 months ago
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Akshaya Reddy Reddygaari G8 5 years, 3 months ago
Posted by Praveen Praveen Lovvanshi 5 years, 3 months ago
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Vaishnavi Kumari 5 years, 3 months ago
Posted by Anand Kumar 5 years, 3 months ago
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Posted by Anand Kumar 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Imagine a straight line passing through the pole and the centre of curvature of a spherical mirror. This line is called the principal axis
Anand Kumar 5 years, 3 months ago
Posted by Anand Kumar 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
The optical centre of a lens is a point on the principal axis of the lens, such that a ray of light passing through it goes undeviated.
Optical centre: It is the geometrical centre of the lens.
Anand Kumar 5 years, 3 months ago
Posted by Priya Ms 5 years, 3 months ago
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Pranav Sapkal 5 years, 3 months ago
Posted by Ananditha Bharadwaj 5 years, 3 months ago
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Meghna Thapar 5 years, 3 months ago
The distance from the pole to the focal point is called the focal length (f). The focal length of a spherical mirror is then approximately half its radius of curvature. It is important to note up front that this is an approximately true relationship. Analytically, the focal length is described by the lens maker's equation: 1/f = (n - 1)(1/R1 + 1/R2), where R1 and R2 are the radii of curvature, f is the focal length, and n is the index of refraction. Verify that your earlier measurements are consistent with this equation.
Posted by Manan Sharma 5 years, 3 months ago
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Posted by Manan Sharma 5 years, 3 months ago
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Posted by Wangseng Lowang 5 years, 3 months ago
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Pragnya G 5 years, 3 months ago
Posted by Sowjanya Lekisha 5 years, 3 months ago
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Posted by Sowjanya Lekisha 5 years, 3 months ago
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Aditya Raj 5 years, 3 months ago
Posted by Surendra Singh Shaktawat 5 years, 3 months ago
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Posted by Neetu Neetu 5 years, 3 months ago
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Posted by Hafsa Bi 5 years, 3 months ago
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Posted by Harkanwal Aujla 5 years, 3 months ago
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Gaurav Seth 5 years, 3 months ago
1. It should possess high calorific value.
2. It should have proper ignition temperature. The ignition temperature of the fuel should neither be too low nor too high.
3. It should not produce poisonous products during combustion. In other words, it should not cause pollution o combustion.
4. It should have moderate rate of combustion.
5. Combustion should be easily controllable i.e., combustion of fuel should be easy to start or stop as and when required.
6. It should not leave behind much ash on combustion.
7. It should be easily available in plenty.
8. It should have low moisture content.
9. It should be cheap.
10. It should be easy to handle and transport.
Posted by Harkanwal Aujla 5 years, 3 months ago
- 1 answers
Gaurav Seth 5 years, 3 months ago
Petrochemicals
Those chemicals which are obtained from petroleum and natural gas are called petrochemicals.
For Ex:Methyl alcohol,ethyl alcohol,formaldehyde,acetone,acetic acid,ethylene,benzene,toluene,vinyl chloride etc.
They are important because they are used to manufacture large number of useful material such as detergents, synthetic fibres, plastics, synthetic rubber, drugs, dyes, perfumes, fertilisers, insecticides etc.
Posted by Raj Kumar 5 years, 3 months ago
- 2 answers
Yogita Ingle 5 years, 3 months ago
The pressure is usually defined as the amount of force that is applied to a certain area. The pressure is a physical quantity and mostly expressed as formula p = F/A where F and A are force per area perpendicular to the surface. While we have already discussed everything about pressure in our earlier article, here we will explore the topic of units of pressure.
The SI unit of pressure is Pascal (represented as Pa) which is equal to one newton per square metre (N/m-2 or kg m-1s-2). Interestingly, this name was given in 1971. Before that pressure in SI was measured in newtons per square metre.
Posted by Manaswini Pathak Pathak 5 years, 3 months ago
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