InterviewSolution
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InterviewSolution
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.
| 59751. |
Why carbon has sooty flame? |
| Answer» Unsaturated hydrocarbons like ethyne also known as acetylene burn to produce a yellow sooty flame due to in complete combustion in air. The flame is sooty because the percentage of carbon is higher than that of alkanes and so does not get completely oxidized in air | |
| 59752. |
What is the formula of magnesium chloride |
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Answer» Mg(Cl)2 Mg(cl)2 Mgcl2 Mg(cl)2 |
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| 59753. |
Write the uses of baking powder. |
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Answer» To bake food and in soda acid fire extinguisher In making cakes, bhaturai etc Please refer the second chapter of NCERT book |
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| 59754. |
Write the formation of Sodium bicarbonate. |
| Answer» Pass NH3 and CO2 in Brine soln | |
| 59755. |
Is respiration is an exothermic process? |
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Answer» Yes Yes the respiration is considered as exothernmic reaction because respiration evolved the heat by the process exhalation so it an exothermic process ?? Yes , it is exothermic as its release energy.?Hello |
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| 59756. |
What is function of slip rings? |
| Answer» Slip rings are two hollow rings to which two ends of the armature coil are connected. These rings rotate with the rotation of the coil.\xa0Its purpose is to allow for electrical contact with the brushes. | |
| 59757. |
What are the two different reactions of cupper with nitric acid with respect to the concentration? |
| Answer» Cu(NO2)3 | |
| 59758. |
How is food transported on plants? |
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Answer» With the help of phloem Food is transported on plants by by phloem. By the help of phloem. \xa0Phloem transports food materials from the leaves to different parts of the plant. The transportation of food in phloem is achieved by utilizing energy from ATP which helps in creating osmotic pressure that transport food from the area of high concentration to low concentration. By phloem. Through pholem |
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| 59759. |
Find the electic current in an appliance having power 200 watt and it work at 220 volt |
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Answer» 0.9A P=v×I . 200=220×I. 200÷220=I. 0.909A=I Yes 0.9A |
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| 59760. |
Refraction ofvlight |
| Answer» The change of direction of light because of change of medium is known as Refraction or Refraction of Light. The ray of light changes its direction or phenomenon of refraction takes place because of difference in speed in different media.The light travels at faster speed in rare medium and at slower speed in denser medium. The nature of media is taken as relative. For example air is a rarer medium than water or glass. | |
| 59761. |
How does amoeba reproduce in bunary fussion |
| Answer» | |
| 59762. |
Difference between artries and veins |
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Answer» Artery carried oxygeneted blood ,thick walled,andhigh pressure blood flow in it.Vein carryed dioxygeneted food,thin walled corry low pressured blood Arteries 1) carry oxygenated blood 2) thick and elastic walls3) valves are absent 4) high pressure Veins1) carry de-oxygenated blood 2) thin and non elastic walls 3) valves are present 4) low pressure Viens carries deoxygenated bloodArteries carries oxygenated blood |
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| 59763. |
What is autotrophic nutrition |
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Answer» The process in which organism make thera own food by some raw material Those are autotropic nutrition which can make our own food for example green plants |
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| 59764. |
What is Owm\'s law? |
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Answer» At constant temperature, the current flowing through a conducter is directly proportion to the potential difference across its ends. Its ohm\'s law V~I such that V=IR therfore R =V/I where R stands for resistance which is symbol of propotionality ~ According to the ohms law the strength of electric current is directly proportional to the potential difference through the ends of the conductor |
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| 59765. |
What are indicators name all three types of indicators With examples |
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Answer» Litmus, methyl orange, phnophathline Litmus paper Litmus,Thallophyta methylorange Indicators are those substances that tell the nature of acid or base for example-: litmus paper,methyl orange,methyl blue and onion extratct Indicators are phnoelphatlin, litmus paper and methyl orange |
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| 59766. |
Hii..hlo everyone |
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Answer» Hyyy Hyyy |
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| 59767. |
What is acid base salt |
| Answer» The substances which are sour in taste and produces H+ ions in aqueous solution are called AcidsThe substances which are bitter in taste and produces OH- ions in aqueous solution are called basesThe substance which is formed from neutralising reaction of acids and bases are called salts . e.g NaCl | |
| 59768. |
Why the sky appears blue in colour,? |
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Answer» Due to scattering of light Sunlight reaches Earth\'s atmosphere and is scattered in all directions by all the gases and particles in the air. Blue light is scattered more than the other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time. |
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| 59769. |
Which blood is flow in plumanry arety |
| Answer» Deoxygenated blood | |
| 59770. |
How to Reproduce? In human. |
| Answer» | |
| 59771. |
Diagram of heart and label arters and veins |
| Answer» Human Heart | |
| 59772. |
Double circulation of blood |
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Answer» Blood travel twice during each cycle is called double blood circulation. It is necessary to maintain temperature in organism When bloowhen blood travels twice in a heart in one cycle is known as double circulation of blood . In mammals, when blood reaches the heart twice then this circulation is valled double circulation The blood travel two times through heart in one cycle is known as double circulation of blood. |
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| 59773. |
What is the uses of metal |
| Answer» Metals use in making wires like copper. It uses in making thin sheets like aluminium foil. It uses in making jwellery like gold. | |
| 59774. |
Explain the refractive index through glass slab |
| Answer» | |
| 59775. |
Which kind of mirror used on T.V screens. |
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Answer» No type of mirror is used because mirror is one side reflecting but TV mirror is transparent both side so it is not a mirror it is a piece of glass Concave mirror |
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| 59776. |
When do we say that the potential difference between two points of a circuit is 1 volt |
| Answer» The potential difference between two points is said to be 1 volt if the work is done in moving 1-coulomb charge from one point to other is 1 joule. | |
| 59777. |
Why is it necessary to separate oxygenated and deoxygenated blood in mammals and bird? |
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Answer» Thanks Because deoxygenated blood do not contain oxygen in it that don\'t require by our body and oxygenated blood have rich amount of oxygen if our body don\'t separate them we don\'t get rich amount of oxygen also our circulatory system don\'t work properly |
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| 59778. |
What is balanced chemical equation? Why should chemical equations be balanced ? |
| Answer» (1) A chemical equation in which the number of atoms of different elements on the reactants side (left side) are same as those on product side (right side) is called a balanced chemical equation.Zn + 2HCl → ZnCl2 + H2 ↑(2) All the chemical equations must balance, because atoms are neither created nor destroyed in chemical reactions.(3) The number of atoms of each element before and after reaction must be the same.(4) According to the law of conservation of mass, the total mass of the substances that are taking part in a chemical reaction must be the same before and after the reaction. | |
| 59779. |
Lead nitrate react with potassium iodide which colour is formed |
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Answer» Yellow (which is lead iodide) A precipitation reaction occurs. Yellow precipitates of lead iodide are formed.The equation for this reaction is Pb(NO3)2 + 2KI -----> PbI2 + 2KNO3The above reaction is ionic as reaction is taking place between metal and non metal. |
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| 59780. |
What are villi. State two function |
| Answer» The finger like projections in the inner walls of the small intestine is called villi.These are found in small intestine.Function:1) The villi increase the surface area for absorption of the digested food.2) It absorbs all the nutrients from the food and convert it into glucose. | |
| 59781. |
Explain the anerobic respiration in human |
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Answer» The respiration in which oxygen is not required is called anaerobic respiration. The respiration in absence of oxygen is called anaerobic respiration. |
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| 59782. |
Please give a brief note of the topic twinkling of stars |
| Answer» in simple twinkling of star is caused by the passing of light through different layer of a tubeland atmosphere most senior senior inter nearly asli effect are caused by animal IAS is most addictive production caused by small scale for creation in air density is related to temperature gradient | |
| 59783. |
What is mean by precipitation. |
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Answer» the correct meaning of precipitation is rain A precipitation reaction refers to the formation of an insoluble salt when two solutions containing soluble salts are combined. The insoluble salt that falls out of solution is known as the precipitate, hence the reaction\'s name. Precipitation reactions can help determine the presence of various ions in solution. the action or process of precipitating a substance from a solution. A reaction in which precipitate ( a insoluble residue) is formed. notes from chapter no.2 control and coordination Answer only topper |
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| 59784. |
saliva contains what |
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Answer» Salivery amaylase. Salivary amaylase Salivary analysis |
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| 59785. |
What are the necessary conditions for autotrophic nutrition and what are its by-products |
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Answer» The nrcessary condirion of the aurotropic mode of nutrition is sunlight chlrophyll water and co2 its by product is o2 as gas Necessary conditions for autotrophic nutrition are: sunlight , H2O,CO2 and cholorophyll .Its by products are Oxygen and water |
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| 59786. |
Give example of non - aquous solution |
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Answer» Tinctures of iodins A non-aqueous solution is a solution in which water is not the solvent. Examples of non-aqueous solutions are solutions used in dry cleaning (a solution of ethene in the solvent dichloromethane). A solid solution is a solution in which a solid is the solven Solution in iodine in alcohol(tincture of iodine) |
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| 59787. |
How could we draw a straight chain of S8?? |
| Answer» | |
| 59788. |
In sulphur catenation is 8 so in carbon how many catenation are possible...?? |
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Answer» Catenation occurs most readily with carbon, which forms covalent bonds with other carbon atoms to form longer chains and structures. This is the reason for the presence of the vast number of organic compounds in nature. Having a valency of 4, carbon atom is capable of bonding with atoms of oxygen, hydrogen, nitrogen, sulphur, chlorine and other elements. Since it requires four electrons, carbon is said to be tetravalent. |
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| 59789. |
What is the action of saliva on starch |
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Answer» It converts starch into simple sugar with the help of salivary a.ylase present in sapiva To breakdown the complex form starch into simpler starch \tAs soon as we take food in our mouth the process of digestion begins.\tOur teeth cut and reduce the food items into small particles and the salivary glands start secretion of saliva that mixes with these food particles.\tThe saliva contains an enzyme known as salivary amylase which hydrolyzes starch into maltose.\tThe complete digestion of starch in the small intestine by the action of pancreatic juice.\tAll living beings require energy for its survival.\tThe food we consume that supplies energy.\xa0 Break down the starch |
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| 59790. |
Activity 1.8ans |
| Answer» | |
| 59791. |
Which plant hormone is responsible for growth of stem and wilting of leaves |
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Answer» Auxin Cytokinins Auxin and gybralic acid |
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| 59792. |
Define term decomposition reaction |
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Answer» It is the reaction in which a single compound decompose into two or more simpler substances Those reaction in which a single compound break down into its constituent by heat ;light and electricity is called decomposition reaction A reaction in which a single reactant break down to form two or more products is called decomposition reaction. Those reactions in which a single compound breaks down into two or more simpler substances is called decomposition reaction.example;caco3••••••• cao+co2 When a element displaces the other element from its cmompound then its known as decomposition reaction |
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| 59793. |
Derivation series and parallel ohm\'s low rho low |
| Answer» | |
| 59794. |
What is Elerctrolysis |
| Answer» Electrolysis is the process by which ionic substances are decomposed into simpler substances when an electric current is passed through them. | |
| 59795. |
Send me all isomers of hexane. |
| Answer» The five isomers of hexane are: hexane, 2-methylpentane, 3-methylpentane, 2,2-dimethylbutane, and 2,3-dimethylbutane. | |
| 59796. |
Ductile |
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Answer» An object ( metal) which has the propety of drawn into thin wires is kown as ductility. Properly of metal to be get i the shape of wire |
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| 59797. |
what is a focal length |
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Answer» Focal length is\xa0the distance between the centre of a lens or curved mirror and its focus. Distance between the pole and focus It is the half of curvature |
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| 59798. |
State the effects of acids and bases on indicators |
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Answer» Acid - Base indicators\xa0are substances which change colour with pH. Blue and Red litmus Acid changes blue litmus into red, whereas base changes red litmus into blue. Acid blue in colour. And bases of In blue colour |
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| 59799. |
List three methods of producing magnetic fields |
| Answer» Three methods of producing magnetic fields are as follows:(a) Magnetic field can be produced by placing a permanent magnet or a horse-shoe magnet at the place, where magnetic field is required.(b) Magnetic field is produced around a current carrying straight conductor or a current carrying coil.(c) A very good method to produce magnetic field is due to flow of current in a solenoid. | |
| 59800. |
List any three uses of mineral acid? |
| Answer» \tMineral acids are used widely in industry. they are used in chemacl industry to make fertilisers, PVC pipes\tHydrochloric acid is used to remove oxide film before galvanizing.\tNitric acid is used in production of plastics, fertilizers, dyes.\tSulphuric acid is used for mkaing car batteries, explosive, detergents.\tH2SO4 is essential component in petroleum refining. | |