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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.
| 57151. |
Differet between bisexual and unisexual in flower with exampel |
| Answer» \tBisexual flowerUnisexual flower1. It is also known as complete flower.1. It is also known as incomplete flower.2. It contains both male and female reproductive system.2. It contains either male or female reproductive system.3. The flower has both the male reproductive organs (stamens) and the female reproductive organs (pistil) in a single flower.3. The flower has either male reproductive organs (stamens) or the female reproductive organs (pistil)4. E.g. Hibiscus4. E.g. Palm\t | |
| 57152. |
Why ionic compounds do not dissolve in kerosene |
| Answer» Ionic compounds are soluble in polar solvents and insoluble in non-polar solvents. Polar solvents like water decrease the electrostatic forces of attraction, resulting in free ions in aqueous solution. Hence, ionic compounds dissolve in polar solvents. Non-polar solvents like kerosene, benzene are not capable of dissolving ionic solids since they can not decrease the forces of attraction between the ions. | |
| 57153. |
When do the desert plant take up carbon dioxide and perform photosynthesis |
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Answer» During night the desert plant perform photosynthesis ... I think they take it from the surrounding atmosphere. |
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| 57154. |
Define hydronium? |
| Answer» H+ ions always releases in water or aquous solution . Therefore, when we mix acid in water then , H+ + H2o - H3O formed this H3o is called hydronium ion. | |
| 57155. |
What is meant by hydrocarbons?Give example. |
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Answer» Tqq The full form of AC is Abirami chitra Wat is the full form of Ac... Carbon and hydrogen Ac said me that he will me chocolate to anbarasi.... |
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| 57156. |
What is the function of pineal gland? |
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Answer» The primary function of the pineal gland is to produce melatonin. Also The pineal gland contains receptors for the regulatory neuropeptide, endotheli which, when injected in picomolar quantities into the lateral cerebral ventricle, causes a calcium-mediated increase in pineal glucose metabolism. It is d master gland of pitutary gland. |
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| 57157. |
is metal malleable |
| Answer» Yes . All metals are malleable except sodium and potassium. | |
| 57158. |
Why does litmus paper do not work in dry ammonium hydroxide? |
| Answer» Because in drylitmus paper OH- ions are not produced | |
| 57159. |
Why AC preferred over DC?? |
| Answer» 1. AC transmission is lower than DC transmission 2.we can easily change voltage of AC | |
| 57160. |
Define aluminothermic reaction |
| Answer» Thermite is a pyrotechnic composition of aluminium powder and a metal oxide. It produces an aluminothermic reaction known as a thermite reaction.The reaction of iron (III) oxide and aluminum can be represented by the equation:Fe2O3 (s) + 2 Al (s) → Al2O3 (s) + 2 Fe (s)This reaction is known as the “thermite” process, which has been used industrially for welding that is the preparation of metals from their oxides, and the production of incendiary devices. The process is initiated by heat, but then becomes self-sustaining. | |
| 57161. |
What do you mean by exothermic and endothermic |
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Answer» Exothermic reaction: The reaction which is accompanied with evolution of heat is known as exothermic reaction.CaO + CO2\xa0→ CaCO3, ΔH= -178.3 kJ mol-1Endothermic reaction:\xa0The reaction which is accompanied with absorption of energy is known as endothermic reaction, e.g.,2NH3\xa0→ N2\xa0+ 3H2; ΔH = +91.8 kJ mol-1 Exothermic rxns are those rxns in which heat is released or endothermic rxns are those rxns in which heat is absorbed |
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| 57162. |
What is the importance of variation in reproduction? |
| Answer» Variations are very important for organisms to survive because if there were no variations among living organisms there would have been no evolution or change and natural conditions do not remain constant they keep on changing. If variations stops then we would not be able to adapt to the changing conditions and can prove catastrophic to us.In nature, variations occur during sexual reproduction. If this variation is beneficial to the species, it is selected and remains in the population. This is because the variant species are more adapted. Therefore, they can survive better and reproduce to pass the genes to the offsprings. | |
| 57163. |
Why are spam enter overy |
| Answer» For new creation of organism | |
| 57164. |
What is xenogamy |
| Answer» Xenogamy: transfer of pollen grains from anther to stigma of another flower produced on a different plant belonging to the same species. Example, papaya. | |
| 57165. |
Transportation in plant |
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Answer» Plants lack a regular circulatory system like animals have we all know that plants prepare their food from CO2 and water in their leave. The other materials present in Plant body like nitrogen, phosphorus and minerals are taken directly from the soil. The conduction of some materials to short distances occurs through diffusion while for longer distances a need of proper transportation system arises. Therefore, two pathways have developed in plants independently which comprise of. (1) Xylem tissues. (2) phloem tissues Both xylem and phloem carry substance from one part of the plant body to another. Xylem transports water and minerals obtained from the soil. Phloem transports products of photosynthesis from leaves to other parts of the plant . Plants have specialized vascular tissues for transportation of substances. There are two types of vascular tissues in plants, viz. xylem and phloem.Xylem: Xylem is responsible for transportation of water and minerals. It is composed of trachieds, xylem vessels, xylem parenchyma and xylem fibre. Trachieds and xylem vessels are the conducting elements. The xylem makes a continuous tube in plants which runs from roots to stem and right up to the veins of leaves.Phloem: Phloem is responsible for transportation of food. Phloem is composed of sieve tubes, companion cells, phloem parenchyma and bast fibres. Sieve tubes are the conducting elements in phloem. |
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| 57166. |
Why the magnetic field line are circular. |
| Answer» Not in circular but we can say that in half cutted apple shape. This is because of the strength of magnet .In poles the strength is high while in mid portion the strength is low. So lines makes in the curved shape | |
| 57167. |
How do we can know that the chemical is a salt? |
| Answer» If it\'s pH is neutral and taste is salty | |
| 57168. |
How an voltmeter is high resistance device |
| Answer» A voltmeter is always coonected in parallel across a device to measure the voltage across it. Now, if the voltmeter has low resistance, then the current will split and flow through the voltmeter also, thereby giving incorrect or undesired results across the device. Hence, it has a high resistance so that negligible current flows through it. | |
| 57169. |
Fullform of adp |
| Answer» Adenosine diphosphate | |
| 57170. |
Name the functional unit of exceratry system |
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Answer» Nephron Nephron, which is present in kidney in large number. The removed toxis substrance from our body |
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| 57171. |
Photosynthesis ? |
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Answer» Photosynthesis is a type of process in which the plants make their own food by the help of air, sunlight and water. the process in which green plant can make their own food by the presence of Sunlight by chlorophyll from carbon dioxide and water Photosynthesis means in which plants make thier food from sunlight , water, air. |
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| 57172. |
what is iron nails |
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Answer» The small pieces of iron is said to be Iron nail Iron nails are pins of iron which are used to which are used to hang anything by hammering it into the wall. |
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| 57173. |
Why do we store silver chloride in coloured bottle? |
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Answer» Because silver chloride react with light and it will lose their properties so silver chloride stored in cloud bottle Hft |
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| 57174. |
How is fuse connected in Circuit? |
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Answer» Fuse is connected in series combination so as to maintain the same current in the circuit. Serise combination Series |
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| 57175. |
when an insect bite why it cause dengue not aids |
| Answer» | |
| 57176. |
Bio gas is consider to boon to a farmer give reason? |
| Answer» For following reasons :-# Good way to decompose and get rid off bio waste.# Good source of fuel.# Slurry used as source of manure. | |
| 57177. |
What is anode mud? |
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Answer» Same as manya☺️☺️ The impurities left after electrolysis of a metal that settles down is known as anode mud . |
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| 57178. |
What happens if there is no platelets in blood |
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Answer» Person can die even small cut in our body blood do not stop and at last die If there is no platelets in blood then the person may get die during any small accident because there is no any thing in blood to stop bleeding or cloting the blood. There is no cugulation of blood if injury taken place |
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| 57179. |
What is anode mod |
| Answer» | |
| 57180. |
Differentiate beetwen Cerebrum and Cerebellum ? Give five points each |
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Answer» Cerebrum is a part of fore brain whereas cerebellum is a part of hind brain.Cerebrum consists of sensory area ,motor area and association area.Cerebellim controls only some of the involuntary actions of the body. (Cerebrum ) all the voluntary actions of the body are coordinated by cerebrum. (Cerebellum )it helps the maintaining posture and balance of the body Cerebellum is a part of hind brani, and helps in volintare work but cerebrum is not |
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| 57181. |
What is basic function of acid in our stomach \'and function of renal artery |
| Answer» Roles of acid in our stomach are –1. It makes an acidic medium in our stomach which is necessary for activation of pepsin enzyme.2. It kills germs present in the food.Renal artery carries mineral rich, oxygenated blood from the heart to the kidneys for nutrition and cellular respiration. | |
| 57182. |
Four observations that help us to determine whether a chemical reaction has taken place |
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Answer» 1 A chemical change is a change in which something new is formed. The starting materials usually change into an entirely different substance or substances. This new substance has a different chemical composition than the starting materials.1) change in structure2) change in state3) evolution of gas4) change in colour5) formation of precipitate |
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| 57183. |
Differentiate between addition reaction and substitution reactions shown by hydrocarbon? |
| Answer» Addition reaction is a type of reaction in which two or more molecules combine with each other to form a single substance. This type of reaction occurs only with those molecules which have either a double or a triple bond between their carbon atoms.Due to having double bond,these molecules can break one of the carbon-carbon bonds and can ADD other atoms by sharing those electrons with other atoms(which were previously bonded to carbon atoms). Thus, addition reaction makes an unsaturated compound into a saturated compound.Ex:\xa0C2H4+ H2\xa0→ C2H6Substitution reaction is a type of reaction in which one atom of any other element substitutes or replaces one of the hydrogen atoms of a given hydrocarbon.Substitution reaction does not add any atom to the hydrocarbon because it takes place only in saturated hydrocarbons(containing only single bonds).Thus if any atom has to be added in the hydrocarbon,one of the hydrogen atoms needs to be replaced by that atom. | |
| 57184. |
How many charge present in 1.acetate. 2.formate |
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Answer» One negative charge is present on both There was no need to reply if you dont know the ans. Pata nahi?? |
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| 57185. |
What is ray optics? |
| Answer» Aap ke qestion ka matlab | |
| 57186. |
What is reflectance |
| Answer» | |
| 57187. |
What is balanced chemical equation?why should chemical equations be balanced? |
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Answer» 1 . a balanced chemical equation is a equation in which the number of atoms of elements are equal in the product side and the reactant side.2 . according to law of conservation of mass , mass can be neither be created nor be destroyed 3 . so the no. Of atoms of elements in reactant side must be equal to the no. Of atoms of same element in the product side. Having equal no.of atomsof same element in both sides of equation2. to satisfy law of conservation of mass Mass can neither be created nor be destroyed |
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| 57188. |
Ph value of detergent ,milk,lemon,baking soda |
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Answer» The pH value of milk is 6.5 lemon 2.5 and baking soda is8.5 7.5-8 |
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| 57189. |
What are the functions of Blood ? |
| Answer» Blood\xa0has a number of functions that are central to survival, including: supplying oxygen to cells and tissues. providing essential\xa0nutrients\xa0to cells, such asamino acids, fatty acids, and glucose. removing waste materials, such as carbon dioxide, urea, and lactic acid. | |
| 57190. |
,why co2 Is heavier than air |
| Answer» | |
| 57191. |
Methods of separating gangue from metal ore |
| Answer» Its not mentioned in ncert but u can fond thos anwer i paradeep or lakhmir singh booms | |
| 57192. |
What is the largest gland? |
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Answer» Mohd mukkarram seriously you do not know this answer Liver |
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| 57193. |
Can silver has lowest resistance than nichrome |
| Answer» Yes silver has lowest resistance than nichrome are used for electric bulb and heater | |
| 57194. |
What is diffetence between washing soda and baking soda |
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Answer» Washing soda : 1 Is used for glass ,soap and Washing soda |
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| 57195. |
How metal displaces hydrogen from dilute acidPlease ans.. do Bhai or bahan |
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Answer» When other like zinc iron will dispace because they are high reactive metal Hydrogen evoluvate H |
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| 57196. |
Formation of brown NO2 gas is which type of chemical reaction.. |
| Answer» Combination reaction | |
| 57197. |
When magnesium ribbon is burnt in the air, it is covered with which layer |
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Answer» Yes you are right Himanshu , the magnesium ribbon is covered with magnesium oxide.?? I think it has a layer of magnesium oxide but i have a doubt |
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| 57198. |
Nacl common name |
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Answer» It is common salt Table salt or common salt Common Salt Common salt Solt common name |
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| 57199. |
What is electrolytic refining |
| Answer» refining of a metal (such as copper) by electrolysis, the crude metal used as the anode going into solution and the pure metal being deposited upon the cathode — called also electrolytic refining. | |
| 57200. |
What is antacids |
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Answer» The solutions which show character of acid aswell as base called antacid. Antacids are basic substances that nuetralise the excess acid in stomach.( A person takes in an antacid when he/she suffers from acidity.) |
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