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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.
| 51501. |
What do you mean by Dialysis |
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| 51502. |
What is refractive lndex |
| Answer» Sin i\\sin r | |
| 51503. |
What is name of this compound CaOCl2 |
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Answer» Calcium hypochlorite Calcium oxy chloride (CaOCl2) commonly called under the name of bleaching powder. |
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| 51504. |
If water is poured in concentrat |
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| 51505. |
Formation of image by convex mirror In their following creteria |
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| 51506. |
Magnisium Ribbon ko jalane se phele saph kyu karte hai? |
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Answer» Sorry atharva. Thanku Athatva. Magnesium ribbon when left open in environment, a oxide layer gets formed along with some impurities. So because we need a pure chemical reaction the magnesium ribbon must be cleaned |
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| 51507. |
What is the balance equation? |
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Answer» It is a chemical equation in which no.of atoms of diff elements are equal in reactants and products. When the atoms on the both side are equal in number |
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| 51508. |
What is the balance equation |
| Answer» No of recatant =no of reacter | |
| 51509. |
Double respiration |
| Answer» In humans we follow two respiration process1. Aerobic respiration ( presence of oxygen) 2. Anerobic respiration ( absence of oxygen)That\'s why it is called double respiration. | |
| 51510. |
What happened when magnesium react with oxygen in air |
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Answer» Magnesium ribbon is convert into white waste material . it made magnesium oxide Magnesium oxide is formed |
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| 51511. |
how reaction is balance |
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Answer» By following the 6steps as shown in the text nook When the number of atoms in reactants is equal number atoms in product the reaction said to be balanced |
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| 51512. |
Why electric charges are quantise |
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| 51513. |
H I( O ) +1.5 F=-12 U=-18 Draw the raw diagram and find nature and size of image |
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| 51514. |
Why sometimes our eye are very red? |
| Answer» Because of our blood pressure (getting over angerness) | |
| 51515. |
Oil is fat containg food items are flushed with nitrogen.why? |
| Answer» Nitrogen being an inert gas does not react easily with the oil and fat present in the food substances. But oxygen reacts easily with the food substances and makes them rancid. It is because of this reason that food items containing oil and fat are flushed with nitrogen gas before their packing to remove oxygen present in the pack. | |
| 51516. |
Does graphite pass current |
| Answer» The crystalline form of carbon is graphite. It is also represented by the symbol C. In graphite each carbon atom is bonded to three carbon atoms. These three atoms are again bonded to three carbon atoms each, and so on. Thus a hexagonal layered structure is formed. Light cannot pass through the graphite crystal because of the irregular layered structure. Therefore graphite is a grey-black and opaque material. | |
| 51517. |
Does grsphite passes current |
| Answer» Yes graphite can pass electric current | |
| 51518. |
Digestion in animals |
| Answer» F | |
| 51519. |
Name 3 components of gastric juice and what are its functions? |
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| 51520. |
Define reactants and products |
| Answer» The substances that undergo chemical reaction is called reactant. The substance formed after chemical reaction is called productIn a chemical equation left side is reactant and right side is product | |
| 51521. |
How elements are classified?? |
| Answer» Elements are classified on the basis of similarities in thier properties | |
| 51522. |
Is hydrogen a metal or it is non metal |
| Answer» It is both metal and non metal | |
| 51523. |
Structure of methyl iso caynate |
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| 51524. |
How resistivity is different from resistance |
| Answer» Resistance:\tThe\xa0ratio of the potential difference between the two ends of a conductor to the current flowing through at uniform temperature is called resistance of that conductor.\tThe unit of resistance is ohm (Ω).\tResistance of conductor depends on its length, temperature, cross section area, material of the conductor.\tResistance is related with a particular conductor.Resistivity:\tAt a fixed temperature amount of resistance offered in the flow of current by a conductor having unit length and unit cross section is called its resistivity or specific resistance.\tThe unit of resistivity is ohm-meter (Ω-m).\tresistivity of conductor depends on the material of the conductor and its temperature.\tResistivity is related with the material of the conductor. | |
| 51525. |
Why Combination Reaction is called reverse of Decomposition Reaction |
| Answer» Because in combination reaction two or more elemens combine to form new compound and in decomposition reaction single reactant breaks down to give simpler product | |
| 51526. |
Why the ph value of milk change when it turns to curd |
| Answer» The pH decreases as the curd is acidic when compared to curd. The increase in acidic character is nothing but decrease in pH value. The pH value of milk is approximately 6.8The curd is acidic as the microbes initiate the formation of lactic acid the anaerobic respiration is responsible for the formation of lactic acid. While, The pH of curd is 4.5 to 5.5 | |
| 51527. |
What is pines |
| Answer» what is pines | |
| 51528. |
What is 1 ohm\'s? |
| Answer» SI Unit of resistance is ohm. Ohm is denoted by Greek letter ‘Ω’. 1 ohm (Ω) of Resistance (R) is equal to the flow of 1 A of current through a conductor between two points having potential difference equal to 1 V. | |
| 51529. |
What is chemical equatuon |
| Answer» It is a chemical reaction with the sign of equality is known as chemical equation. | |
| 51530. |
Explain emulsification |
| Answer» It is the process of breaking down of large lipid droplets into small droplets. This provides a larger surface area on which enzyme pancreatic lipase can act to digest the fats into fatty acids and glycerol which are easily absorbed through small intestines. Bile salts are extremely important for emulsification of fats. | |
| 51531. |
What happens when aqueous solution of bacl2 and Na2so4 are mixed? |
| Answer» Bacl2 + na2so4 - baso4 + nacl | |
| 51532. |
What is electric potential |
| Answer» Electric potential is possess of high potential to lower potential are called electric potential | |
| 51533. |
What is saprophytes |
| Answer» Organism get food from dead bodies called saprophyteEx-fungi | |
| 51534. |
what is fame |
| Answer» | |
| 51535. |
Write the short note of human being respirastion |
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Answer» There are two type of Respirastion1-Aerobic Respirastion=Respirastion take place on the presence of oxygen. ln this Respirastion food totally breakdown. 2-Anaerobic Respirastion=Respirastion take place on the presence of lack of oxygen.In this Respirastion partly breakdown of food. Respirastion is a process by which we get energy. Break down of food because of respirastion .It occur in mytochondria. It is mentioned in the ncert textbook |
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| 51536. |
What is the temperature of human body |
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Answer» It is 37 in celcies It is 98.6degree farenhelt |
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| 51537. |
Explain the following:Copper and aluminium wires are employed for electricity transmission |
| Answer» Copper and aluminium wires are employed for electricity transmission because they are good conductor of electricity and they have less resistance than other. Silver is the best conductor of electricity but it is not use because it is so expensive | |
| 51538. |
Replica of Decomposition reaction |
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| 51539. |
What is ohm,s |
| Answer» SI Unit of resistance is ohm. Ohm is denoted by Greek letter ‘Ω’. 1 ohm (Ω) of Resistance (R) is equal to the flow of 1 A of current through a conductor between two points having potential difference equal to 1 V. | |
| 51540. |
What is meant by chemical equation ? |
| Answer» A chemical equation is the symbolic representation of chemical formula in the form of symbols and formula wherein the reactant entires are given on the left hand side and the product entires on the right hand side | |
| 51541. |
Different between arteries and veins |
| Answer» Arties are the blood vessels which carry blood away from heart to the various organs of the body. It carries pure blood (or oxygenated blood). But only pulmonary artery carries impure blood .Veins are the blood vessels which collect blood from the different organs to the heart. It carries impure blood (or de -oxgenated blood) . But only pulmonary vein carries pure blood | |
| 51542. |
Epiglottis?? |
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| 51543. |
Electron |
| Answer» Electrons are discovered by JJ Thomsan in 1897 . Electrons are negatively charged and denoted by e- | |
| 51544. |
Give reason why fire flies glow at night |
| Answer» Fire flies have a special kind of substance I.e., luciferin that undergoes oxidation in the presence of an enzyme. This reaction is accompanied by emission of light. Therefore, fire flies glow at night | |
| 51545. |
father of physics |
| Answer» Albert Einstein | |
| 51546. |
New species developed |
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| 51547. |
What are notochord |
| Answer» Notochord is a long flexible rod like structure present in all chordates. It is present in the embryo of all chordates and also in some adult chordates. The main function of notochord is to support the body. As the embryo grows it becomes a part of the true backbone or vertebral column. Also, notochord is involved in the development of nervous system. | |
| 51548. |
And what is the resistance do |
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Answer» resistance means opposition of electric current Resistance prevent to destroy bulb or any electrical things |
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| 51549. |
What constitutes electric current ? |
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| 51550. |
How balanced equation |
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