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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 43951. |
What is amobea |
| Answer» An unicellular organism | |
| 43952. |
Respiration in plants ?give their types also? |
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| 43953. |
How glucose is oxidized with equations? |
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| 43954. |
Lesson plan for teachers |
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| 43955. |
Define heterogeneous |
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Answer» A heterogeneous mixture does not have a definite composition. Cereal in milk is an example of a heterogeneous mixture. Soil is another example. Soil has pebbles, plant matter and sand in it. Although you may add one substance to the other, they will stay separate in the mixture. We say that these heterogeneous mixtures are non-uniform, in other words they are not exactly the same throughout. There are any issues of tissue |
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| 43956. |
What is c3 |
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Answer» I got it Thanks yogita C3 pathway involves set of carbon reactions which are catalysed by the enzyme Rubisco to synthesise 3 carbon compound, 3-phosphoglycerate from 5-carbon compound, Ribulose bisphosphate. This cycle is less efficient in utilising CO2. |
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| 43957. |
Can anyone tell me difference between light reactions and dark reactions |
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Answer» \tLIGHT REACTION (light dependent reaction)DARK REACTION (light independent reaction)It occurs in thylakoid membranes of chloroplasts in a leaf.It occurs in the stroma of the living chloroplast.Light energy is absorbed by photosystems PS-I and PS-IICarbon dioxide present in the atmosphere is absorbed.Cyclic and non-cyclic photophosphorylation occur in the cellsC3 pathway is observed in green plants. In desert plants, we can observe c4 pathway.End products are ATP and NADP.H2.End products of light reaction are used up to synthesise sugar.Oxygen is released as a by-product of the photolysis if water.Main product is sugar in the form of glucose\t I newly enter in 10 Test hai Science ka exam ho chuka h |
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| 43958. |
What is precipitate??? |
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Answer» In chemistry, a precipitate is an\xa0insoluble\xa0solid that emerges from a liquid\xa0solution. The emergence of the insoluble solid from solution is called precipitation. Often the precipitate emerges as a\xa0suspension.Precipitates can form when two soluble salts react in solution to form one or more insoluble products.soluble salt 1 + soluble salt 2 → insoluble salt (precipitate) How many types of precipitate Issey jyada deep me google se dekhlo kal mera Sst ka exam hai science ka nhi It is insoluble It is a solid substance formed during a chemical reaction. |
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| 43959. |
What is mean bye cataliyst |
| Answer» The substance which increase the rate of reaction.. | |
| 43960. |
What is parastaltic movement |
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Answer» *in The contraction nd relaxation of muscles information the oesophagus... |
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| 43961. |
Balance the equation nickel nitrate+sodium hydroxide which gives nickel hydroxide + sodium nitrate |
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| 43962. |
Lack of oxygen is present in body |
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Answer» Heart In muscles.... I think so.... |
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| 43963. |
Experiment to show that sunlight is essential for photosyenthesis. Explanation |
| Answer» Place a healthy green potted plant in a dark room for 1-2 days. This is done to ensure that the plant consumes all its reserve food and the leaves do not contain any starch. Then, cover a portion of a leaf of this plant on both sides with two uniform pieces of black paper, fixed in position with two paper clips.Now, expose this plant to bright light. After a few hours, remove the leaf, decolourize it with alcohol, and test the presence of food (starch) with iodine solution.You will observe that the portion of the leaf covered with black paper does not show any presence of starch (food).Explanation of the activity:The food prepared by plants (carbohydrates) through the process of photosynthesis is stored as starch. This starch reacts with the iodine solution to change to blue-black colour. Only those portions of the leaf that were exposed to sunlight could photosynthesize and hence, change to blue-black colour when tested with iodine. | |
| 43964. |
What are the types of chemical reaction tell with definition. |
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Answer» Combination reactions: A combination reaction is one in which two or more reactants combine to form a single product.\xa02Ca + O2\xa0→\xa02CaODecomposition reaction: Decomposition reactions are those in which a substance splits into two or more simpler substances.\xa0Decomposition reactions are the opposite of combination reactions.2H2O → 2H2 + O2Single displacement reaction: Single displacement reaction is the one in which one element substitutes or displaces another element in a compound to give new compound.\xa0Generally\xa0in a single displacement reaction, less active metal is displaced by a more active metal.Mg + CuCl2 → MgCl2 + CuDouble displacement reaction: The reactions which involves\xa0exchange of ions (cations and anions) between the reactants are called double displacement reactions.BaCl2\xa0(aq) + Na2SO4 (aq)\xa0→ BaSO4\xa0(s)\xa0+ NaCl\xa0(aq)Exothermic reaction: Chemical reactions in which heat energy released are known as exothermic reactions.Burning of methane gas in air produces heat energy.CH4\xa0(g)\xa0+ 2O2\xa0(g)\xa0→ CO2\xa0(g)\xa0+ 2H2O (l)+ heatEndothermic reaction: Reactions\xa0which involves absorption of energy are known as endothermic reactions.Example:Formation of nitric oxide from nitrogen and oxygen.N2\xa0(g)+ O2\xa0(g)\xa0+ Heat\xa0→\xa02NO\xa0 Combination reaction is a reaction in which a single product is formed from two or more reactantsDecomposition reaction is a reaction where from a single product two diffrent reactans are formed |
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| 43965. |
What is nutrients? |
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Answer» Nutrients: Materials which provide nutrition to organisms are called nutrients. Carbohydrates, proteins and fats are the main nutrients and are called macronutrients. Minerals and vitamins are required in small amounts and hence are called micronutrients. Tq Nutrients are components which are essential for the regular funcioning of our body |
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| 43966. |
Cross section of a leaf |
| Answer» CROSS SECTION OF A LEAFCuticle: A waxy layer that prevent water loss by evaporation. The cuticle is transparent and very thin to allow maximum light penetration.Upper Epidermis: A protective layer of cells that produces the cuticle. The epidermis is is also transparent and very thin to allow maximum light penetration.Palisade Mesophyll: Rod shaped cells that contain large numbers of chloroplasts for photosynthesis. These cells are located close to the leaf surface to maximise light absorption. They are upright, elongated and tightly packed together in order to increase the surface area for light absorption. Chloroplasts are found near the palisade cell surface to maximise light absorption and to reduce the distance that carbon dioxide and oxygen have to diffuse (to / from the chloroplast stoma)Spongy Mesophyll: These cells are smaller than those of the palisade mesophyll and are found in the lower part of the leaf. They also contain chloroplasts, but not quite as many. These cells have large air spaces between them that allow carbon dioxide and oxygen to diffuse between them. The air spaces also gives these cells a large surface area to maximise the diffusion of carbon dioxide into the cell and oxygen out of the cell.Vein: Plant veins consists of\xa0xylem\xa0(vessels that carry water) and\xa0phloem\xa0(vessels that carry dissolved nutrients such as sugar). These vessels play an essential role in transporting water to the chloroplasts in the mesophyll tissues for photosynthesis. They also transport the sugar produced by photosynthesis away from these cells to the rest of the plant tissues to be used as an energy source or stored.Lower Epidermis: A protective layer of cells. The lower epidermis produces a waxy cuticle too in some plant species. The lower epidermis contains pores called stomata that allow carbon dioxide and oxygen to move in and out of the plant respectively.Stomata: Tiny pores (small holes) surrounded by a pair of sausage shaped guard cells. These cells can change shape in order to close the pore. In very hot conditions water inside the leaf evaporates and the water vapour can escape through the stomata. Closing them prevent reduces water loss, but also limits the diffusion of carbon dioxide and oxygen in and out of the leaf. | |
| 43967. |
Chemical reaction in hindi |
| Answer» रासायनिक समिकरण | |
| 43968. |
Chemical reaction? |
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| 43969. |
What if time is an illusion? |
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| 43970. |
examples of each characteristic of chemical reaction |
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| 43971. |
Describe the electrolysis of water |
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| 43972. |
What is the molecular formula of copper sulphate |
| Answer» CuSo4 | |
| 43973. |
Where is ammulgum is used |
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| 43974. |
what is the atomic mass of bromin |
| Answer» 79.904u | |
| 43975. |
What is the smell of rigged egg.? |
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| 43976. |
Explain digestion in human beings?????? |
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Answer» Entire information about digestive system is given. You can mould it as per your requirement.Digestion: Digestion is the process by which food is broken down into simple absorbable substances. Digestion of food takes place in the digestive system. Digestive system is made up of alimentary canal and associated glands.\xa0Parts of alimentary canal:The mouth, oesophagus, stomach, small intestine and large intestine form the alimentary canal. It is also known as the digestive tract.Mouth is guarded by upper lip and lower lip. The process of taking in food through mouth is called as ingestion.Buccal cavity is the inner region of the mouth. It encloses teeth and tongue.Teeth are of different types namely, incisors, canines, premolars and molars.Incisors are used for biting food.Canines are sharp and pointed and are used to pierce or tear food.Premolars and molars are the principal grinders helping to chew and grind the food.Tongue is a muscular organ attached to the floor of the buccal cavity at the back. It helps in mixing of food with saliva and swallowing it. It also helps in tasting different types of food with the help of taste buds present on it. The buccal cavity leads into pharynx.Pharynx is at the back of buccal cavity. The pharynx is the common channel for food and air. When you swallow food, a flap-like valve called the epiglottis closes the windpipe. It prevents the entry of food particles into respiratory tract.Oesophagus also called as food pipe helps in conveying the food from buccal cavity to stomach. The oesophagus is also known as the gullet. It is about 25 centimetres long. Food inside the oesophagus reaches the stomach by peristalsis movements.Stomach is the widest part of the alimentary canal. It is a J-shaped muscular organ with stomach occurs with the help of digestive juice. Digestive juice comprises of hydrochloric acid, mucous and some enzymes.Small intestine is made up of three regions namely duodenum, jejunum and ileum. Partially digested food called the chyme from the stomach is received by the duodenum. Duodenum also receives bile form the liver, enzymes from pancreas and secretes some enzymes on its own. All these substances bring about digestion of food in the intestine. The inner walls of the small intestine have millions of small finger like projections called the villi. Villi increase the surface area for digestion as well as absorption of digested food by eight times.Large intestine comprises of colon and rectum. Undigested food is sent into large intestine. Water from the food is reabsorbed to a great extent in the large intestine. Undigested waste is stored in the rectum for defecation.**** is the opening of the alimentary canal to the exterior. This helps in the elimination of faeces by the process of egestion.Associated glands: These glands include salivary glands, gastric glands, intestinal glands, liver and pancreas.Salivary glands are present inside the buccal cavity. They secrete saliva. This saliva plays an important role in breaking down complex components like starch into simple sugars.Gastric glands present inside the stomach secrete gastric juice which helps in the digestion of food.Intestinal glands secrete various enzymes which aid in the process of digestion of food.Liver is the largest gland in our body. The liver secretes a yellowish green watery fluid called bile. It is temporarily stored in a sac called the gall bladder. Bile plays an important role in the digestion of fats. Bile is sent into duodenum through a narrow tube-like structure called the bile duct. Bile breaks the larger fat molecules into tiny droplets, thereby increasing their surface area, which helps in the digestion of fats easily.Pancreas is the mixed gland. It acts as a both endocrine and exocrine gland. The pancreas secretes the pancreatic juice that helps to digest carbohydrates, proteins and fats. The pancreatic juice converts carbohydrates into simple sugars and glucose, proteins into amino acids, and the lipids into fatty acids and glycerol. Long process... can\'t write here...check the notes of this app.. |
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| 43977. |
Plzz koi sample paper send kr do |
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Answer» Jiska ho Kiska |
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| 43978. |
What is balance equations |
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Answer» A balanced equation is a chemical equation in which number of atoms of each element is equal on both sides of the equation i.e number ofatoms of an element on reactant side = number of atoms of that element on the product side. An equation in which the number of atoms for each element in the reaction and the total charge are the same for both the reactants and the products is known as a balanced equation... Answer is:the equations which are balanced known as balanced equations Equations which have equal no. Of molecules on both sides... |
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| 43979. |
What is infra red radiation |
| Answer» It is electromagnetic radiations which has longer wavelengths than visible light | |
| 43980. |
Why normal is included in both reflection and refraction? |
| Answer» The amount of bending of a light ray as it crosses a boundary between two media is dictated by the difference in the two indices of refraction. When light passes into a denser medium, the ray is bent toward the normal. ... Light rays passing through a lens are bent at both surfaces of the lens. | |
| 43981. |
Iron = Fe . ? ? ? ? ? ?Man = male ☺ ? ? ? Ironman = Fe + male. ????? |
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| 43982. |
What is the similarity between acids and bases? |
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| 43983. |
What is the main difference between acids and bases? |
| Answer» Acids dissociate H+ ions when dissolved in water whereas bases dissociate to release OH- ions... | |
| 43984. |
Why did some animals extint? Why do not they survive by the process of evolution? |
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| 43985. |
Give five examlples for reaction of metallic oxides with acids |
| Answer» Science hogaya na | |
| 43986. |
Why you not include Metal and nonmetal in any chapter of syllubus of science? |
| Answer» Bhai hai toh metal non metal | |
| 43987. |
What are alloys? what is the purpose of making them? |
| Answer» Alloys are the mixture of homogeneous mixture of metals.... | |
| 43988. |
Han mera Sanskrit hai |
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| 43989. |
Will anyone wants to make me as his Mare |
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Answer» Sorry As u understand |
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| 43990. |
Why respiration is considered as exo thermic reaction |
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Answer» As heat enery is release while we inhale the gas the gas oxygen is used in broken down the nutrients to give out heat energy and energy Because in respiration food is get oxidized and heat releases..... Becoz energy is released in this process...... |
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| 43991. |
How Rebuild our world economy ? |
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| 43992. |
इतने अमीर तो कोन्या क सब कीमे खरीद ल्या पर इतने गरीब भी कोन्या क खुद बिक जावा |
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| 43993. |
दर्द वो ना होता जब छोरी छोड़ क चली जावे। दर्द वो स लाडले जब उस छोरी खातर दोस्त छोड़ क चले जावे। |
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| 43994. |
ना कट्टे ना पिस्टल चाहिए। ना चाहिए दुनाली। 2 – 4 लाडले यार चाहिए। अर चाहिए एक वा मरजानी। |
| Answer» Ya manga | |
| 43995. |
छोरी की #हासी अर कुत्ते की #खामोसीप कदे भरोसा नी करना चाहिए। |
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| 43996. |
Why are molecular movements necessary for life |
| Answer» The living organisms are well-organised structures; they can have tissues, tissues have cells, cells have smaller components in them, and so on. Because of the effects of the environment, this organised, ordered nature of living structures is very likely to keep breaking down over time. If order breaks down, the organism will no longer be alive. So living creatures must keep repairing and maintaining their structures. Since all these structures are made up of molecules, they must move | |
| 43997. |
How is resistivity inversely proportional to area of cross section if a conductor? |
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Answer» Ya...honey is ri8.. If it is resistance then,if area of cross section is doubled then resit. will be halved Yeah I meant resistance Do u mean resistance... Resistivity does not depends upon on its length or thickness ,it only depends upon nature of substance and temperature. |
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| 43998. |
How i know that i am prepares this chapter very well |
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| 43999. |
Aptial tissue diagrms of chapter 6biology |
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| 44000. |
How\'s your English exam |
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Answer» Superbb Fantastic Awesome Marvellous excellent |
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