Description : Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above ... Both processes can happen together because the diffusion coefficient of water and CO2 is different
Last Answer : (d) Both processes can happen together because the diffusion coefficient of water and CO2 is different
Description : Is rusts physical change or chemical change?
Last Answer : Its is chemical as
Description : A chemical change takes place when iron (A) Rusts (B) Melts (C) Is heated (D) None of these
Last Answer : (A) Rusts
Description : Assertion : Dark reactions of photosynthesis are temperauture -controlled processes. Reason : Most of the reactions are enzymatic in nature.
Last Answer : Assertion : Dark reactions of photosynthesis are temperauture -controlled processes. Reason : Most of the ... If both Assertion and Reason are false.
Description : What occurs when an earthquake causes a sudden vertical change in the sea floor?
Last Answer : Need answer
Description : Is the body of a trucks rusts a physical or a chemical property?
Last Answer : Feel Free to Answer
Description : The manufacture of iron from iron ore involves the process of – (1) oxidation (2) reduction (3) fractional distillation (4) electrolysis
Last Answer : (2) reduction Explanation: The manufacture of iron ore involves the process of reduction. Important ores of iron : Haematite, Magnetite.
Description : The manufacture of iron from iron ore involves the process of (1) oxidation (2) reduction (3) fractional distillation (4) electrolysis
Last Answer : reduction
Description : What is meant by ‘rusting’? With labelled diagrams, describe an activity to find out the conditions under which iron rusts. -Chemistry
Last Answer : When iron is exposed to air and moisture for a very long time, it gets covered with a brown flaky substance. This brown flaky substance is called rust and the process is called rusting. The ... when only oxygen was available, it shows that rusting cannot take place if only oxygen is available.
Description : When iron rusts, how is its weight? -Do You Know?
Last Answer : answer:
Description : When iron rusts, how is its weight?
Last Answer : – Increases
Description : When iron rusts, the weight (a) Increases (b) Decreases (c) Remains the same (d) First increases then decreases
Last Answer : Ans:(a)
Description : Iron rusts at the area (a) Cathodic area (b) Anodic area (c) Both cathodic and anodic areas (d) None of the above
Description : Iron rusts quickly in – (1) Rain water (2) Sea water (3) Distilled water (4) River water
Last Answer : (2) Sea water Explanation: Water is the enabler of fast oxidation of iron. So freshwater will also cause rust. However, salt water (sea water) is a very good conductor (lots of dissociated ions ... which causes the current to be re-versed and in effect the zinc corrodes rapidly, protecting the iron.
Description : When iron rusts, its weight – (1) decreases (2) increases (3) remains the same (4) first increases and then decreases
Last Answer : (2) increases Explanation: When iron rusts, oxide compounds are formed due the interaction between oxygen in the air or in water and the metal. Because of the oxygen atoms binding with the metal, the weight of the metal with rust will increase.
Description : When iron rusts, its weight : (1) decreases (2) increases (3) remains the same (4) first increases and then decreases
Last Answer : (2) increases Explanation: When iron rusts, oxide compounds are formed due the interaction between oxygen in the air or in water an the metal.
Description : When iron rusts, its weight - (1) decreases (2) increases (3) Constant (4) None
Last Answer : (2) increases Explanation: Iron rust when they come into contact with water and oxygen. They rust faster in salty water or acid rain.
Description : Iron rusts quickly in
Last Answer : Sea water
Description : When Iron rusts; its weight?
Last Answer : increases
Last Answer : Increases
Description : Give reason: a) Iron exposed to air rusts quickly during rainy season.
Last Answer : a) Iron exposed to air rusts quickly during rainy season. Due to the presence of excess water vapour. b) Iron nail kept in a closed jar containing calcium chloride does not rust. As air is dry ... ) Tin is used to coat the inner walls of brass and copper utensils. To avoid corrosion or rusting.
Description : . Iron rusts quickly in
Description : When iron rusts, its weight (1) decreases (2) increases (3) remains the same (4) first increases and then decreases
Description : Iron rusts quickly in (1) Rain water (2) Sea water (3) Distilled water (4) River water
Description : A steady state within the body is termed a) Homeostasis. When a change occurs that causes a body function to deviate from its stable range, processes are initiated to restore and maintain ... that is perceived as challenging, threatening, or damaging to the person's dynamic balance or equilibrium.
Last Answer : a) Homeostasis. When a change occurs that causes a body function to deviate from its stable range, processes are initiated to restore and maintain the steady state or homeostasis.
Description : Cell regulation can be thought of as the effector side of cell communication. Most commonly cell regulation occurs by means of extracellular chemical messengers. Which of the following statement(s ... d. Most hormones, local mediators, and neurotransmitters readily cross the cell plasma membrane
Last Answer : Answer: b, c Depending on how the extracellular messenger arrives, cell regulation can be classified as paracrine, endocrine, or neurocrine. In paracrine regulation, a chemical messenger ... , local mediators, and neurotransmitters are water-soluble and cannot readily cross the plasma membrane
Description : Do Fluther Mods get a chunk of change, other fabulous perks, or are they strictly volunteers?
Last Answer : Totally voluntary.
Description : Identify pest white oblong worm on leaf
Last Answer : If there are just a few of them, kill them by your finger with or without glove. Otherwise, most insectcide will kill them by contact. I can not ID it without picture.
Description : Which worm reach into intestine of human by eating leaf? -General Knowledge
Last Answer : The answer is 'Tape worm'
Description : Which worm reach into intestine of human by eating leaf?
Last Answer : Tape worm
Description : Does the "early bird catch the worm?"?
Last Answer : Last time I went out really early this winter, all I caught was a clod. :-(
Description : The processing of green tea involves brief heating of the freshly picked leaves. What could be the possible reason/s? 1. To retain green colour of leaves 2. To give it a special flavour 3. To denature leaf enzymes for preventing ... reason/s is/are true? (a) Only 1 (b) 1 and 3 (c) Only 2 (d) Only 3
Last Answer : Ans:(d)
Description : The chemical processes in the production of steel from haematite ore involve
Last Answer : The chemical processes in the production of steel from haematite ore involve A. Reduction B. ... by oxidation D. Oxidation followed by reduction
Description : The chemical process in the production of steel from haematite ore involves
Last Answer : The chemical process in the production of steel from haematite ore involves A. Reducation B. ... by oxidation D. Oxidation followed by reduction
Last Answer : The chemical process in the production of steel from haematite ore involves A. reduction B. ... by oxidation D. oxidation followed by reduction
Description : Statement-1: Extraction of gold from its native ore involves leaching the metal wih dilute solution of NaCN in presence of air. Statement-2:This is an
Last Answer : Statement-1: Extraction of gold from its native ore involves leaching the metal wih dilute solution of ... -1 is false but Statement -2 is true
Description : Assertion : Hydrometallurgy involves dissolving the ore in a suitable reagent followed by precipitation by a more electropositive metal. Reason : Copp
Last Answer : Assertion : Hydrometallurgy involves dissolving the ore in a suitable reagent followed by precipitation ... : Copper is extracted by hydrometallurgy.
Last Answer : Pepsin digests non-vegetarian food.
Last Answer : Hydrochloric acid ( HCl)
Description : Tyrypsin differs from pepsin because it digests `:`
Last Answer : Tyrypsin differs from pepsin because it digests `:` A. Carbohydrate in alkaline medium in stomach B. ... D. Protein , in alkaline medium in duodenum
Description : In a forest community a shelf fungus and a slug live on the side of a decaying tree trunk. The fungus digests and absorbs materials from the tree while the slug eats algae growing on the outside of?
Description : How does a sea star feeds on and digests clams?
Description : What organelle digests excess or worn out cell parts invaders?
Description : Endocytosis is a process whereby a cell (a) Digests itself (b) Engulfs and internalises material using its membrane (c) Identifies other cells within its immediate (d) Enables the extracellular digestion of large molecules
Last Answer : Ans:(b)
Description : The salivary hydrolase is known as salivary amylase, or ptyalin. Ptyalin digests carbohydrates breaking starch and glycogen, glucose polymers, into maltose (a glucose disaccharide) and dextrin.
Last Answer : Why doesn't the food enter the trachea instead of going to the esophagus?
Description : Pepsin digests _______. (1) proteins in stomach (2) carbohydrates in mouth (3) fats in duodenum (4) minerals in ileum
Last Answer : (1) proteins in stomach Explanation: Pepsin is produced in the stomach and is one of the main digestive enzymes in the digestive systems of humans and many other animals, where it helps digest the proteins in food.
Description : Which enzyme digests proteins in the stomach? (1) Trypsin (2) Pepsin (3) Salivary amylase (4) Pancreatic canal
Last Answer : (2) Pepsin Explanation: Protein digestion begins in the stomach with the action of pepsin. Pepsin is the active protein-digesting enzyme of the stomach. When pepsin acts on the protein ... that are digested in the small intestine with the help of trypsin, chymotrypsin, and carboxypeptidase.
Description : The saliva secreted in the mouth digests (1) Proteins (2) Starch (3) Fats (4) Vitamins
Last Answer : (2) Starch Explanation: The enzymes found in saliva are essential in beginning the process of digestion of dietary starches and fats. These enzymes also play a role in breaking down food particles entrapped within dental crevices, protecting teeth from bacterial decay.