For example : Combination : 2H₂ + O₂ → 2H₂O Decomposition: 2H₂O ──Electricity──▶ 2H₂ + O₂ You can clearly see that in first one , hydrogen and oxygen atoms are combine together to form water. But On the second one see that water molecule is decomposed and break down in to hydrogen and oxygen when […]
What is Cell A cell is the basic unit of a living organism. It means each living organism is made up or one or more cells. That’s why cell is called building blocks of a life. Cell is capable to do all the activities of that is necessary of a life like respiration, growth, reproduction,
Plasma membrane called selectively permeable membrane because it pass only selected substance in or out through the cell. What is Plasma Membrane The plasma membrane is a outermost covering of a cell that is thin, flexible and a living membrane that surrounds the cell and protect the content of the cell from the external environment.
Corrosion and Rancidity play an important role in our daily life. Corrosion and Rancidity are the most popular terms in chemistry of class 9 and class 10 in NCERT book. We nearly see the phenomenon of corrosion and Rancidity in our surrounding. Let’s use clear with more details. Hi Guys My name is Rishabh and
What is Mixture ? When two or more substance are mixed together without undergo any chemical reaction then it said to be mixture. For example : when we take salt and water, and mix it then it doesn’t do any chemical reaction since, these forms mixture. Here no new substance are formed. They just mix
We know that egg shell is mostly made up of Calcium Carbonate and when calcium carbonate is react with nitric acid it produce calcium nitrate, carbon dioxide gas and water. When carbon dioxide gas is passed through lime water it turns in to white precipitate solution. Since egg shell slowly dissolve and become disappear, when
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Answer 1: Those chemical reactions in which a large amount of heat is produced with by product is called exothermic reactions. Respiration is considered an exothermic reaction because the energy (glucose)is released in the form of heat during a chemical reaction . During respiration process, glucose reacts with oxygen to produce carbon dioxide, water, and
Option Present in the plant cells Absent in the animal cells (i) Leucoplast Cell wall (ii) Mitochondria Ribosome (iii) Cell wall Golgi apparatus (iv) Lysosome Endoplasmic reticulum Answer: Option (i) is correct. Explanation: Option (i): Leucoplast – Cell wall ✔ Correct Option (ii): Mitochondria – Ribosome ✘ Incorrect Option (iii): Cell wall – Golgi apparatus
(i) Controlling all the activities of a cell. Controls all the activities of the cell. (ii) Site of cellular respiration. Mitochondrion – Site of cellular respiration. (iii) Storage organelle that also provides rigidity to the cell. Vacuole – Stores materials and provides rigidity to the cell. (iv) Separates the cell contents from surroundings. Cell Membrane