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# Quick Guide: Knowledge Made Simple

## Sitemaps
[XML Sitemap](https://quickguide.in/sitemap_index.xml): Includes all crawlable and indexable pages.

## Posts
- [What happens when ferrous sulphate is heated class 10](https://quickguide.in/what-happens-when-ferrous-sulphate-is-heated-class-10/): When Ferrous Sulphate (FeSO₄·7H₂O) is heated then it start losing water and form anhydrous ferrous sulphate (FeSO₄), which is further heated and forms Ferrous Sulphate (Fe₂O₃) , sulfur dioxide (SO₂) and sulfur trioxide (SO₃).
- [What is fractional distillation in class 9](https://quickguide.in/what-is-fractional-distillation-in-class-9/): Fractional distillation is a process in which two or more miscible liquids can be separated by boiling the solution until the liquid of the lower boiling point vaporizes. That vapor is passed in a fractional or water condenser to make them condense and turn back from vapor to liquid. This pure liquid is collected in separate vessels, while the solid or other liquid from the solution remains in the distillation flask. This process is called fractional distillation.
- [Define crystallization class 7](https://quickguide.in/define-crystallization-class-7/): Crystallization is the process in which a pure substance is obtained in the form of a crystal from its solution and is called crystallization.
- [What is Epithelial Tissue Class 9](https://quickguide.in/what-is-epithelial-tissue-class-9/): Epithelial tissue is a special type of tissue that forms the outer covering of the body (skin), and it also lines the internal organs, such as the mouth, lungs, blood vessels, and intestine. It is made up of closely packed cells with little space between them.
- [What Is Osmosis Class 9 biology](https://quickguide.in/what-is-osmosis-with-examples/): Osmosis is the process in which the movement of water molecules takes place from a region of higher water concentration to lower water concentration through a selectively permeable membrane.
- [Difference between mitosis and meiosis class 9](https://quickguide.in/difference-between-mitosis-and-meiosis/): Mitosis is a type of cell division in which one parent cell divides to form two identical daughter cells. Also, the number of chromosomes in the daughter cell is the same as the parent cell. Each cell contains 23 pairs of chromosomes. It means it has a total of 46 chromosomes that contain our genetic information in the form of DNA.
- [What outcomes do you expect if all the mitochondria are removed from a eukaryotic cells](https://quickguide.in/what-outcomes-do-you-expect-if-all-the-mitochondria-are-removed-from-a-eukaryotic-cells/): Mitochondria is also knows as "Powerhouses of the cell" because they produce energy in the form of ATP (Adenosine Triphosphate) to perform cellular activities. The cell need energy to perform various activities like respiration, growth, cell division protein synthesis etc. if we remove mitochondria in eukaryotic cell then cell lose it energy and doesn't perform any function and finally cell die.
- [Do white flowers contain any pigment? Give reasons](https://quickguide.in/do-white-flowers-contain-any-pigment-give-reasons/): Yes, white flowers may contain pigments but the they are very little in amount and having no colored pigments. That why they don't show bright color like red, blue, yellow.
- [What are the 5 functions of cell membrane](https://quickguide.in/5-functions-of-cell-membrane/): Here The 5 functions of cell membrane are:
- [Why are lysosomes known as suicidal bag](https://quickguide.in/why-are-lysosomes-known-as-suicidal-bag/): Lysosomes is a small sac type membrane that is filled with a powerful digestive enzyme called hydrolytic. It is mainly found in animal cells and destroy or act as a cleaning agents of a cell. It helps to destroying infected cells by foreign particles, digesting unwanted material or worn out organelles. It also decompose dead cells.
- [Why are decomposition reaction called opposite of combination reaction](https://quickguide.in/why-are-decomposition-reaction-called-the-opposite-of-combination-reaction/): For example : Combination : 2H₂ + O₂ → 2H₂O
- [Why is cell called structural and functional unit of life​ ?](https://quickguide.in/why-is-cell-called-structural-and-functional-unit-of-life/): 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, transport of material etc.
- [Why is plasma membrane called selectively permeable membrane](https://quickguide.in/why-is-plasma-membrane-called-selectively-permeable-membrane/): Plasma membrane called selectively permeable membrane because it pass only selected substance in or out through the cell.
- [Explain corrosion and rancidity with example](https://quickguide.in/explain-corrosion-and-rancidity-with-example/): 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.
- [What is a homogeneous mixture](https://quickguide.in/what-is-a-homogeneous-mixture/): A Homogeneous mixture is a mixture when two or more substance can mix together in uniform way. It means that the distribution of substance over the mixture is same.
- [What happens when egg shell is added to nitric acid?](https://quickguide.in/what-happens-when-egg-shell-is-added-to-nitric-acid/): 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 it is added to nitric acid.
- [Real Notes Viewer WordPress Plugin Download](https://quickguide.in/real-notes-viewer-wordpress-plugin/): Real notes Viewer is a WordPress plugin that help you to insert important notes, points, attention catching words, offers, discount and many more.
- [Why is respiration considered to be an exothermic reaction](https://quickguide.in/why-is-respiration-considered-to-be-an-exothermic-reaction/): Those chemical reactions in which a large amount of heat is produced with by product is called exothermic reactions.
- [Which of the following option(s) of the pairs of cell organelles are correctly placed under the given categories?](https://quickguide.in/which-of-the-following-options-of-the-pairs-of-cell-organelles-are-correctly-placed-under-the-given-categories/): Option (i) is correct.
- [Look at the diagram of a cell in Fig. 2.20. Identify the parts labelled from (a) to (g) and correctly match them with their functions given below](https://quickguide.in/look-at-the-diagram-of-a-cell-in-fig-2-20-identify-the-parts-labelled-from-a-to-g-and-correctly-match-them-with-their-functions-given-below/): Controls all the activities of the cell.
- [Two similar animal cells are placed in two different solutions:](https://quickguide.in/two-similar-animal-cells-are-placed-in-two-different-solutions-class9-ncert/): Cells are observed after some time. Cell X swells, and Cell Y shrinks.
- [Differentiate between the following pairs of terms based on the clues given in parentheses:](https://quickguide.in/differentiate-between-the-following-pairs-of-terms-based-on-the-clues-given-in-parentheses/): (i) Cell membrane and cell wall (permeability) Cell MembraneCell WallSelectively permeable is presentFreely permeable is presentPresent in all cells.Present in only plant, fungi and bacteria cellsIt is Thin and flexible.It is Thick and rigid.It Controls the movement of substancesIt Provides shape and protection. (ii) RER and SER (structure) RER (Rough ER)SER (Smooth ER)Ribosomes present on surface.Ribosomes absent.It Appears rough.It Appears smooth.It Helps in protein synthesis.It Helps in lipid, fats, and hormone synthesis. (iii) Chloroplasts and chromoplasts (pigments) ChloroplastsChromoplastsIt Contains green pigment chlorophyll.It Contains red, orange or yellow pigments.it helps to Perform photosynthesis.It Gives color to fruits and flowers.
- [what is role of saliva in digestion of food](https://quickguide.in/what-is-role-of-saliva-in-digestion-of-food-cbse/): The role of the saliva in the digestion of foods are:
- [What is the salary of Pilot in India per month](https://quickguide.in/what-is-the-salary-of-pilot-in-india-per-month/): Pilots is one of the highest paid professionals job in India. The career in aviation gets excellent salary, promotions, international opportunities and a high quality lifestyle. However the salary of pilot depends on various things like experience, airline companies, aircraft types and flying hours.
- [What is the role of the brain in reflex action?](https://quickguide.in/what-is-the-role-of-the-brain-in-reflex-action/): There is no direct role of the brain in reflex action. However, reflex action is controlled by Spinal Cord which quickly receive the sensory signal and send a response to the muscles.
- [What is reverberation? How can it be reduced?](https://quickguide.in/what-is-reverberation-how-can-it-be-reduced/): Reverberation is the repeated reflection of sound in a closed room after the source of sound has stopped.It is caused by multiple reflections of sound from walls, ceiling, and other surfaces.
- [What is sound and how is it produced?](https://quickguide.in/what-is-sound-and-how-is-it-produced/): Sound is the form of wave energy that travels through a medium such as solids, liquids and gases.

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