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Ask QuestionPosted by Divya Teja 6 years, 3 months ago
- 2 answers
Gaurav Seth 6 years, 3 months ago
Q : His father always taught him not to _____ those people with less. (look up to / look down on)
A. His father always taught him not to look down on those people with less.
Posted by Parmesh Patel 6 years, 3 months ago
- 0 answers
Posted by Jaimin Patel 6 years, 3 months ago
- 1 answers
Meghna Thapar 6 years ago
Different persons need to play different roles as part of the criminal justice system: (i) Different roles played by different persons need specific qualification. So, this is not possible for a single person to perform the functions like arresting, defending, cross-questioning, collecting evidences and giving final decision or judgment. (ii) To ensure that every citizen, irrespective of their class, caste, gender, religious and ideological backgrounds gets a fair trial in the case of being accused.
Posted by Shivanshu Pathak 6 years, 3 months ago
- 4 answers
Posted by Suhani Singh 6 years, 3 months ago
- 2 answers
Posted by Khushi Kumari 6 years, 3 months ago
- 0 answers
Posted by Dhanu Dhanalakshmi 6 years, 3 months ago
- 1 answers
Meghna Thapar 6 years, 2 months ago
Sedimentation is the tendency for particles in suspension to settle out of the fluid in which they are entrained and come to rest against a barrier.
Posted by Sarthak Hole 6 years, 3 months ago
- 1 answers
Posted by Sumedha Sahu 6 years, 3 months ago
- 0 answers
Posted by Raghav Bansal 6 years, 3 months ago
- 1 answers
Janhavi Patil 6 years, 3 months ago
Posted by Rimjhim Gupta 6 years, 3 months ago
- 0 answers
Posted by Raghav Bansal 6 years, 3 months ago
- 0 answers
Posted by Paresh Khamari 6 years, 3 months ago
- 1 answers
Meghna Thapar 6 years, 1 month ago
Iron is used in bridges and automobiles to provide strength but it tends to corrode and rust. So, a coating of zinc is deposited on iron to protect it from corrosion and formation of rust.
Posted by Paresh Khamari 6 years, 3 months ago
- 1 answers
Meghna Thapar 6 years, 2 months ago
Chromium has a shiny appearance and does not corrode. It resists scratches. So it is used for electroplating.
Posted by Paresh Khamari 6 years, 3 months ago
- 1 answers
Meghna Thapar 6 years, 2 months ago
Tin cans used for storing food, are made by electroplating tin onto iron. Tin is less reactive than iron. Due to electroplating, food does not come into contact with iron and is protected from getting spoilt.
Posted by Paresh Khamari 6 years, 3 months ago
- 1 answers
Meghna Thapar 6 years, 2 months ago
Electroplating is a process of coating a surface with a thin layer of metal with the help of the electrochemical process.
Applications:
i. Aesthetics
ii.Commercial applications
iii. To prevent corrosion
iv. Conduction of Electricity
v. Reduce friction
vi. To protect from radiation
Posted by Paresh Khamari 6 years, 3 months ago
- 1 answers
Meghna Thapar 6 years, 2 months ago
Electric current can bring about chemical changes, so it is said to have a chemical effect. When electric current is passed through acidified water by using carbon electrodes, then a chemical reaction takes place to form hydrogen gas and oxygen gas. In this reaction, water has been decomposed into two elements hydrogen and oxygen, by the action of electric current.
Posted by Paresh Khamari 6 years, 3 months ago
- 1 answers
Revathi Sivaraman 6 years, 3 months ago
Posted by Paresh Khamari 6 years, 3 months ago
- 1 answers
Revathi Sivaraman 6 years, 3 months ago
Posted by Paresh Khamari 6 years, 3 months ago
- 1 answers
Yogita Ingle 6 years, 3 months ago
Iron is more “reactive” than copper. So it displaces Copper from Copper Sulphate solution.
Copper Solution is blue in colour. Iron Sulphate solution is Green.
Iron has blackish appearance, while Copper is reddish brown.
Reaction proceeds as
Fe + CuSO4 → FeSO4 + Cu
Due Iron Sulphate formed, the copper sulphate solution turns green and Copper deposits on Iron nails, giving them brownish colour
Posted by Paresh Khamari 6 years, 3 months ago
- 1 answers
Yogita Ingle 6 years, 3 months ago
Aluminium foils are used to wrap food items because aluminium metal is malleable. Therefore, it can be beaten into thin foils.
A metal candisplace a less reactive metal from its salt in an aqueous solution. But zinc is more reactive than copper. Therefore, copper cannot displace zinc from its salt solution. Cu(s) + ZnSO4 (aq) → No reaction
Posted by Paresh Khamari 6 years, 3 months ago
- 1 answers
Yogita Ingle 6 years, 3 months ago
No, lemon pickle cannot be stored in aluminium utensils because lemon pickle contains acids, which can react with aluminium (metal) liberating hydrogen gas. this can lead to the spoiling of the pickle. metals reacts with acids vigorously to form metallic chlorides,which acts as a poison for human body thatswhy lemon being citric acid cant be stored in aluminium utensils.
Posted by Paresh Khamari 6 years, 3 months ago
- 1 answers
Yogita Ingle 6 years, 3 months ago
Some non-metals such as phosphorus, react with the air. It catches fire if exposed to air. So, phosphorus is stored in water.
Posted by Paresh Khamari 6 years, 3 months ago
- 2 answers
Yogita Ingle 6 years, 3 months ago
Sodium is stored in kerosene.
Because of sodium is a highly reactive and explosive metal ,it can't be left in open because it may react with the moisture in air and explode like a bomb.kerosene does not allow the moisture to penetrate through it .That's why sodium is stored in kerosene.
Posted by Paresh Khamari 6 years, 3 months ago
- 1 answers
Yogita Ingle 6 years, 3 months ago
Physical Properties of Metals
Some of the physical properties of metals are listed below.
- Shiny (lustrous) in nature
- Metal is a good conductor of electricity and heat
- Density and melting point is high
- Mouldable (Malleable)
- Ductile
- At room temperature, it is in solid form except for mercury
- Opaque
Posted by Paresh Khamari 6 years, 3 months ago
- 1 answers
Yogita Ingle 6 years, 3 months ago
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Posted by Paresh Khamari 6 years, 3 months ago
- 1 answers
Yogita Ingle 6 years, 3 months ago
Amoeba
1. Amoeba is unicellular.
2. Amoeba reproduce by binary fission.
3. At the beginning, parent cell of amoeba gets elongated.
4. Nucleus gets oval shape. A notch is developed at the site of division.
5. Two small daughter cells of amoeba are formed.
Hydra
1. Hydra is multicellular
2. Hydra reproduce by budding method.
3. A small out growth is seen on the body of Hydra.
4. It becomes multicellular due to enough growth.
5. This outgrowth detaches in the form of bud having mouth and tentacles.
Posted by Pooja Shukla 6 years, 3 months ago
- 1 answers
Posted by Devansh Singh 6 years, 3 months ago
- 0 answers
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