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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.
| 59501. |
Write a chemical equation of a reaction in which a precipitate is formed. |
| Answer» BaCl2(aq)+Na2SO4(aq)→BaSO4(s)+2NaCl(aq). Barium chloride solution when mixed with sodium sulphate solution yeilds a white precipitate of barium sulphate. | |
| 59502. |
The substance take part in chemicla reaction is called |
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Answer» Reactant... Reactants Reactant |
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| 59503. |
Name the enzyme present in gastric juice |
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Answer» hcl mucus and pepsin Pepsin and rennin. Pepsin. Pepsin is the enzyme which is present in gastric juice. |
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| 59504. |
Which acid is highly reactive? |
| Answer» Nitric acid ,sulphuric acid and HCl | |
| 59505. |
Which are the most important chapters in science in this year |
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Answer» chapter 8 then 12 then 6 then 13 and after then others All topics are very important in this year as well as all years |
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| 59506. |
who found 10 % law |
| Answer» Raymond Lindeman | |
| 59507. |
Define alkaline. |
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Answer» When an alkali is dissolved in water, the solution formed is known as alkaline solution. They can be formed in the laboratory or via natural processes also like erosion. Alkaline solution is basic in nature so used in the laboratory, industry etc. to make chemical reactions basic or neutral. Alkaline refers to an aqueous solution having a pH greater than 7 or a [OH-] greater than 10-7. An alkaline solution is also known as basic.? |
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| 59508. |
Explain the importance of pancreas |
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Answer» . PANCREAS secreats pancriatic juice which contains digestive enzymes like pancreatic amylase , trypsin and lipase . pancreatic amylase breaks down the starch , trypsin digests the proteins and the lipase breaks down the emulsified fats. Pancreas secrete hormones insulin and glucagon.Insulin keeps balance of sugar level in body and glucagon stimulates the breakdown of glycogen in liver into glucose .Glycogen is extra glucose which is stored in liver.Insulin converts extra glucose into glycogen. |
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| 59509. |
Which 2 processes are involved in transportation of water in plants?Explain |
| Answer» Transpiration is the evaporation of water from the leaves in the form of water vapour. Transpiration occurs in leaves through special structures present on them called as stomata.Transpiration is the process which helps the plant in many ways.\tTranspiration always occurs against the gravity.\xa0\tTranspiration involves mainly the xylem cells which become active during absorption process by the roots.\tExcess water is removed from the cells of the plant to prevent plant decay.\tOsmotic balance of the cell is maintained by the process of transpiration.\tTranspiration is the process which helps all the parts of the plant to cool them.\tTranspiration helps in the distribution of dissolved substances to all parts of the plant. | |
| 59510. |
metals and non metals |
| Answer» Metals have positive charge and non metals have negative charge | |
| 59511. |
Who invented moder periodic table niels bohr or henry moseley ?why? |
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Answer» henry moseley bohr |
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| 59512. |
Name an alkali metal other than lithium calcuium strontium and barium |
| Answer» Caesium (Cs) | |
| 59513. |
Draw of human eye and explain its working |
| Answer» The eye has a roughly spherical shape. The outer coat of the eye is white. It is tough so that it can protect the interior of the eye from accident. Its transparent front part is called cornea. Behind the cornea, we find a dark muscular structure called iris. In the iris, there is a small opening called pupil. The size of the pupil is controlled by the iris. The iris controls the amount of light entering into the eye. Behind the pupil of the eye is a lens which is thicker at the centre. The lens focuses light on the retina. The retina contains several nerve cells. Sensations felt by the nerve cells are then transmitted to the brain through the optic nerves. There are two kinds of cells; cones and rods. | |
| 59514. |
What is the difference between dynamo and generator ? |
| Answer» Dynamos and Generators convert mechanical rotation into electric power. Dynamo - a device that makes direct current electric power using electromagnetism. Generator - normally this term is used to describe an alternator which creates AC power using electromagnetism. | |
| 59515. |
I want a good reference book for science please help me give me suggestions |
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Answer» Best is NCERT AND S.CHAND Science question bank Srijan is also nice Take viva education ORS chand |
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| 59516. |
What is combinotion reaction |
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Answer» Reaction in which two or more elements combine to form a single compound Whenever any two or more element combine with each other to form one product called combination reaction When two or more elements react each other and form a single compound When two or more reactants react and combine to form a single product, the reaction is called a \'combination’ reaction.e.g. - Fe + I2 = FeI2 |
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| 59517. |
After tubectomy menstrual cycle happens or not |
| Answer» No... | |
| 59518. |
What is the name of insective vorous plant |
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Answer» Venus flytrap is also the example ...,..........????? Some plants eat insects. Such plants are called insectivorous plants. They trap and digest the insects. Pitcher plant is the example of an insectivorous plant. In pitcher plant the leaf is modified to form a pitcher like structure. The bright colour of the pitcher makes it very attractive to insects. Inside the pitcher; there are several hair-like structures. These hairs direct the trapped insects downwards. When an insect sits on the pitcher of the plant, the lid closes and the insect gets trapped inside the pitcher. The insect is then digested by the enzymes secreted by the cells of the plants. |
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| 59519. |
Mention the condition under which a current van flow in a conductor |
| Answer» The condition under which charges can move in a conductor are the charges in which there is a potential difference. A 12-volt battery would supply 12 Joules of electric potential vitality per each 1 Coulomb of charge which moves between its negative and positive terminals.\xa0 | |
| 59520. |
Who discover cell |
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Answer» Robert hooke in 1665 Cell was discovered by Robert Hooke in 1665. Robert Hooke..... |
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| 59521. |
Why the wall of trachea do not collapse |
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Answer» becausw they are covered with rings of cartilage cartilage is a stretchable bone which is not hard cartilage is a stretchable born which is this not hard Trachea is surrounded by C shaped rings called cartilage which supports it. |
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| 59522. |
Why euglena is classified in connecting link |
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| 59523. |
Two uses of quick lime |
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Answer» It is used for medicinal purpose and insectisidesIt is used in manufacturing of cement,paperetc Use for formation of acidic oxide with KOH Say in english |
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| 59524. |
Does bamboo gives flowers |
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Answer» Yes Tu kya krega jankr Yes, they give flowers as well a rice which comes only for every 100 yrs |
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| 59525. |
Does bamboo tree gives fruit |
| Answer» Yes, bamboo plant bear fruit. | |
| 59526. |
What is difference between fission , binary fission |
| Answer» \tBinary fission\xa0Multiple fissionNucleus divides into two parts.Nucleus divides into many parts.It occurs during favourable conditions.It takes place mostly during unfavourable conditions.It gives rise to two individuals.It forms many individuals.Cytoplasm divides after each nuclear division.Cytoplasm does not divide after every nuciear division.Example: Euglena divides by binary fission.Example: Plasmodium divides by multiple fission.\t | |
| 59527. |
Can oxidation or reduction take place alone why or why not |
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Answer» No No because in oxidation air is needed ans reduction no air is needed |
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| 59528. |
Good night to all? take care |
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Answer» Gaye sab......ok byee Hii Aaj koi aaya hi nii yaha din m bahut sannata tha Hi raunak Aaj itni jaldi sone jaa rahe ho Hello Hlo |
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| 59529. |
List two merits of solar cells |
| Answer» Merits of solar cells(i) The solar cells convert solar radiation directly into electricity.(ii) Solar cells are cost effective particularly in remote areas where cost on installation of other modes of energy is very high.(iii) Solar cells have no movable parts and hence need no maintenance. | |
| 59530. |
How can we help in reducing the problem of waste disposal? Suggest any three methods? |
| Answer» We can help in reducing the problem of waste disposal by adopting the following methods:(i) Minimizing the use of non-biodegradable material.(ii) Recycling the non-biodegradable wastes like plastic.(iii) Production of compost, biogas from bio-degradable wastes.(iv) Reducing the volume of wastes by burning them incinerator.(v) Dispose the non-biodegradable and non-biodegradable in different dustbins\xa0 | |
| 59531. |
Syn emits light from where |
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Answer» By reflecting the light from moon. It dosen\'t gives its own light. Iski apni ? nhi hoti. Are u maddd Sun emits light from where .......... |
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| 59532. |
Give the example of precipitation reaction and reduction reaction? |
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Answer» Reactions in which precipitate is formed are called precipitation reactions. Generally in a precipitation reaction insoluble salts are settled down as precipitate.Na2SO4 (aq) + BaCl2 (aq) → 2NaCl (aq) + BaSO4 (s)In the above reaction, when sodium sulphate reacts with barium chloride, the white precipitate of barium sulphate is formed along with the sodium chloride.Reduction: If a substance loses oxygen or gains hydrogen during a reaction, it is that the substance is reduced. This phenomenon is called reduction. In the following reaction zinc loses oxygen, and hence called is reduced.ZnO + C ⇨ ZnCOMnO2 + 4HCl → MnCl2 + 2H2O + Cl2In this reaction Mangnese dioxide loses oxygen and hence is called readuced. Jab hum teri maa ko chodte hai tab mera lassi precipitate hota hai aur teri maiya ka randipan reduce hota hai |
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| 59533. |
What is respiratory electron transport ?? Tell in simple ncert line |
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| 59534. |
How biogas plant works ? |
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| 59535. |
What is the green colour of leaf peel due to ?where is it found? |
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Answer» Green colour part is chloroplast. The leaf is green in colour due to the presence of chlorophyll It is due to the presence of chlorophyll in the chloroplast of the mesophyll cells present between paliate or epithellial tissues of leaf |
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| 59536. |
Explain about central nervous system |
| Answer» | |
| 59537. |
Name biological catalyst |
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Answer» Enzymes Biological catalyst are called enzymes. These different for different substances. |
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| 59538. |
anyone wants chat for reproduction |
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Answer» abe tu apni behen ko bhej dena Ghar Mein Maa bahen hai ya nahi? Sala cutta |
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| 59539. |
Explain how this process of biofuels production is carried out via anaerobic respiration |
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| 59540. |
What is the pH value of sodium chloride |
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Answer» 7 7 7 |
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| 59541. |
What is the advantage of nuclear energy? |
| Answer» Advantages of Nuclear Energy :1) Nuclear reactions release a million times more energy, as compared to hydro or wind energy. Hence, a large amount of electricity can be generated.2) The biggest advantage of nuclear energy is that it does not generate any greenhouse gases (carbon dioxide , ozone , methane etc.)3) Nuclear reactor uses uranium as fuel and we have high reserves of uranium in earth. | |
| 59542. |
Difference between food web and food chain in tabular form with example |
| Answer» \tFood ChainFood WebA linear pathway showing the flow of energyA multitude of networks showing the flow of energyAn organism of higher level trophic feeds on a specific organism of lower trophic levelAn organism of higher trophic level has access to more members of a lower trophic level.Has no effect on the adaptability and competitiveness of organisms.Has a role in improving the adaptability and competitiveness of an organism.\t | |
| 59543. |
D/B acid and base. |
| Answer» | |
| 59544. |
What is the difference between gaining or sharing of electrons |
| Answer» Gaining means that any element is losing their electros then any element Just gain it is called gainingSharing means that it always occur between non-metal e.g H2 + O2 -. H2O | |
| 59545. |
What is the difference between roasting giving or sharing the electrons |
| Answer» | |
| 59546. |
Why the colour of Silver change |
| Answer» | |
| 59547. |
what is diffusion of carbon dioxide in respiratory system |
| Answer» The alveolar region is having enough pressure gradient to facilitate diffusion of gases. Other regions of the respiratory system don\'t have the required pressure gradient. Additionally, the membrane of alveoli is thin enough to facilitate the exchange of gases in a convenient manner. | |
| 59548. |
How respiration takes place in plants |
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Answer» During respiration, very little amount of gas exchanges takes place within the different parts of the plants. Therefore, each part takes care of its own energy requirements.Roots, stems,\xa0and leaves of plants exchange gases for respiration separately. As we all know, leaves have tiny pores called stomata, which is used for the exchange of gases. The oxygen, taken in through stomata is used by cells in the leaves to break down glucose into carbon dioxide and water. By procces of photosynthesis |
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| 59549. |
Why is small intestine in herbivores longer than in carnivores |
| Answer» Digestion of cellulose takes a longer time. Hence, herbivores need a longer small intestine to allow complete digestion of cellulose. Carnivorous animals cannot digest cellulose, hence they have a shorter intestine. | |
| 59550. |
How is the resistance of a wire affected if radius is doubled |
| Answer» Property to\xa0oppose the flow of electric current is called resistance. Its SI unit is ohms. If 1 V\xa0potential difference is there and 1 A\xa0current is flowing\xa0then it is said that there is 1 ohm resistance. {tex}\\therefore \\,R = \\frac{{\\rho l}}{A} \\Rightarrow R = \\frac{{\\rho l}}{{\\pi {r^2}}}{/tex}{tex}\\left[ {\\because A = \\pi {r^2}} \\right]{/tex}{tex}R\' = \\frac{{\\rho l}}{{\\pi {{(2r)}^2}}} = \\frac{{\\rho l}}{{\\pi {r^2}}} \\times \\frac{1}{4} = \\frac{R}{4}{/tex}Thus, resistance will decrease by four times, if radius of wire is doubled. | |