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Ask QuestionPosted by Manam Tiwari 8 years, 5 months ago
- 2 answers
Peregrina Lobo 8 years, 5 months ago
Microorganisms, specifically bacteria, molds, and yeasts, can cause food to spoil. For example, microorganisms that break down fats in unsalted butter can cause it to become rancid. Bacteria that breaks down protein in meat (proteolytic bacteria) and results in foul odors.
Posted by Pari Kochar 8 years, 5 months ago
- 3 answers
Nitin Mhamane 8 years, 5 months ago
Nylon made from two monomers, adipoyl chloride andhexamethylene diamine
Nitin Upadhyay 8 years, 5 months ago
Nylon is made by polymerization of two monomers, hexamethylenediamine and adipic acid.
Posted by Raju Chouhan 8 years, 6 months ago
- 1 answers
Posted by Raju Chouhan 8 years, 6 months ago
- 2 answers
Arpan Bhowmick 8 years, 6 months ago
Ball bearing causes rolling friction which is lesser than sliding friction so it reduces the friction. Which can save the machine from wearing and tearing.
Gayatri Keswani 8 years, 6 months ago
Ball bearing is used to reduce the friction & wear & tear of machine.
Posted by Arpan Bhowmick 8 years, 6 months ago
- 1 answers
Raju Chouhan 8 years, 6 months ago
When plant remains buried under the earth's crust then over a period time, the chemical and physical properties of the remains were changed by geological action to create a solid material, this material is known as the coal and this way coal is formed.
Posted by Abhay Rana 8 years, 6 months ago
- 1 answers
Arpan Bhowmick 8 years, 6 months ago
They are non biodegradable so they don't mix with the soil properly and cause soil pollution and reduce the soil fertility.
They also pollutes the water bodies and causing the death of marine lives.
They release harmful gases like carbon monoxide when they are burnt.
Posted by Ahana Dey 8 years, 6 months ago
- 1 answers
Naveen Sharma 8 years, 6 months ago
Balanced Reaction :
{tex}2Al+6HCl \to 2AlCl_3 + 3H_2{/tex}
Posted by Priti Baruah 8 years, 6 months ago
- 1 answers
Ashutosh Kumar 8 years, 6 months ago
a gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, CFCs, and other pollutants.
Posted by Raju Chouhan 8 years, 6 months ago
- 1 answers
Geeta Geeta 8 years, 6 months ago
Microorganisms are very useful in manufacturing different food items. They are
1. used in brewing, wine making like Acetobacter
2. used in bakery in the formation of cakes, pastries, biscuits etc like Yeast
3. used to control fermentation process in the production of dairy products like streptococcus for the formation of cheese
4. used in the formation of curd by lactobacillus
5. used for pickling process.
6. used in biogas reactors .
7. used for the production of Antibiotics like Penicillin, Neomycin
8. used in increasing the fertility of soil like Rhizobium
Posted by Naazira Naseer 8 years, 6 months ago
- 2 answers
Aanvi Gupta 8 years, 6 months ago
Electrolytes are substances that conduct electricity in the molten state or when dissolved in water. Nonelectrolytes are substances that don’t conduct electricity when in these states.
Ashutosh Kumar 8 years, 6 months ago
<a href="https://googleweblight.com/i?u=https://www.boundless.com/chemistry/definition/electrolyte/&hl=en-IN">Electrolytes</a> are <a href="https://googleweblight.com/i?u=https://www.boundless.com/chemistry/definition/salt/&hl=en-IN">salts</a> or <a href="https://googleweblight.com/i?u=https://www.boundless.com/chemistry/definition/molecule/&hl=en-IN">molecules</a> that ionize completely in <a href="https://googleweblight.com/i?u=https://www.boundless.com/chemistry/definition/solution/&hl=en-IN">solution</a>. As a result, electrolyte solutions readily conduct electricity.
<a href="https://googleweblight.com/i?u=https://www.boundless.com/chemistry/definition/nonelectrolyte/&hl=en-IN">Nonelectrolytes</a> do not dissociate into <a href="https://googleweblight.com/i?u=https://www.boundless.com/chemistry/definition/ion/&hl=en-IN">ions</a> in solution; nonelectrolyte solutions do not, therefore, conduct electricity.
Posted by Arpan Bhowmick 8 years, 6 months ago
- 1 answers
Ashutosh Kumar 8 years, 6 months ago
Aluminium is a good conductor of heat, on the other hand its is a bad radiator of heat, therefore when we wrap hot food in the aluminium foil it keep the food warm.
Aluminium on reaction with oxygen forms a layer of Al2O3 which renders the metal passive and protects it from further reaction. Hence it is not harmful for us.
Thus, aluminium doesn't react with our food therefore we can use it for wrapping purposes. However, we should not pack pickle in aluminium foil as it contains citric acids, which reacts with Al foil and hence can harm us.
Posted by 9888008658 Omnarayanestates Realtor 8 years, 6 months ago
- 1 answers
Rajendra Singh 8 years, 6 months ago
Microorganisms are found in all kinds of habitat but best suitable habitat is moist, warm condition.
Posted by Rekha Hegde 8 years, 6 months ago
- 1 answers
Ajay Karthikeya 8 years, 6 months ago
Plastic is made of polymers and monomers ,polyesterene, and chains of elements like N2, C, and mostly O2.
Posted by Trilochan Pathak 8 years, 7 months ago
- 1 answers
Jahanvi Choudhary 8 years, 7 months ago
In high heels the area in contact with the ground decrease and as we know that pressure is inversely proportion to area so if the area decreases the pressure increases due to which it is difficult to walk with high heels .
Posted by Tiana Jangra 8 years, 7 months ago
- 2 answers
Posted by Leena Suchdeo 8 years, 7 months ago
- 2 answers
Posted by Umesh Thakur 8 years, 7 months ago
- 1 answers
Vedika Gautam 8 years, 7 months ago
Phototropism is the bending of plants towards the light or sunlight
Posted by Leena Suchdeo 8 years, 7 months ago
- 1 answers
Rajendra Singh 8 years, 7 months ago
Candle first melt and vapourise than burn to give light in presnce of oxygen to give light and heat.
Posted by Leena Suchdeo 8 years, 7 months ago
- 1 answers
Rajendra Singh 8 years, 6 months ago
Column A Column B
1. combustible substance 5. paper
2. carbon dioxide 1. fire fighting
3. hydrocabons 2. fuels
4. hottest part of candle flame 3. complete combution
Posted by Leena Suchdeo 8 years, 7 months ago
- 1 answers
Rajendra Singh 8 years, 7 months ago
Those substances that burn in presence of oxygen to give heat and light are called cumbustible substance. The bond present between molecule of these substance breaks to give energy in form of heat and light.
Posted by Leena Suchdeo 8 years, 7 months ago
- 2 answers
Posted by Leena Suchdeo 8 years, 7 months ago
- 1 answers
Archith Jayalal 8 years, 7 months ago
There will be a competition between the plants for water,sunlight and space.
Posted by Seema Singla 8 years, 7 months ago
- 1 answers
Payal Singh 8 years, 7 months ago
Given
Force = 100N
Pressure = 500Pascel
We know
{tex}Pressure = {force \over Area}{/tex}
So,
{tex}500={100\over area}{/tex}
{tex}=> area={100\over 500}{/tex}
{tex}=> area=0.2 m^2{/tex}
Posted by Leena Suchdeo 8 years, 7 months ago
- 1 answers
Payal Singh 8 years, 7 months ago
The outermost zone is the hottest among all zones and is blue in color, and this is due to complete combustion. It is the non-luminous part of the flame.
Posted by Leena Suchdeo 8 years, 7 months ago
- 1 answers
Umesh Thakur 8 years, 7 months ago
The statement simply refers to fact thatfuel in our car is a fossil fuel
Posted by Leena Suchdeo 8 years, 7 months ago
- 1 answers
Rashmi Bajpayee 8 years, 7 months ago
It is called Incomplete Combustion.
In this process, Carbom monoxide or carbon isnproduced in place of carbon dioxide.
Posted by Leena Suchdeo 8 years, 7 months ago
- 1 answers
Rashmi Bajpayee 8 years, 7 months ago
Electric plugs are made of hard metal like Bakelite that have a high melting point. Therefore the electric plugs do not melt even at high temperature.
Posted by Leena Suchdeo 8 years, 7 months ago
- 2 answers
Umesh Thakur 8 years, 7 months ago
I agree with Tannu chauhan silver is very costly if one puts a wire made up of silver it will be very disturbing for him to pay money
Tannu Chauhan 8 years, 7 months ago
As silver is very costly it is not used for making electrical wires
Posted by Leena Suchdeo 8 years, 7 months ago
- 1 answers
Rajendra Singh 8 years, 6 months ago
Sulphur dioxide and oxide of nitrogen are responsible to cause acid rain.
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Nitin Upadhyay 8 years, 5 months ago
1. Food contaminated by bacteria or other microorganisms is unfit for consumption. This contaminated food is called as spoilt food.
2. We can detect spoilt food by change in colour, stickiness, bad odour and bad taste.
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