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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.
| 54751. |
IUPAC name of cyclohexane |
| Answer» C6H12 | |
| 54752. |
what is electrolysis why it is important explain it by diagram |
| Answer» The process of breaking the intermolecular force of attraction between atoms or molecules of two or more elements through application of electricity is termed as electrolysis.. It is imporatant as many compounds have such a huge force of attraction that they cannot break by normal chemical or physical method.As well as sometimes we need to work with only one element but it is connected with other element in form of a conpound wich cannot be breaked so electrolysis is important.. | |
| 54753. |
Why most of the nutrients we take are carbon based? |
| Answer» Because the nutrients are provided from plants and plants take water and tooo much carbon from environment ..........so ???? | |
| 54754. |
What do you mean by tissue |
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Answer» Group of cells is known as tissue A cluster or bundle of cells that in an organism which have similar origins and structures and which perform similar function, is known as ........... Group of cells having similar function |
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| 54755. |
Stages of phagocytosis in ameoba. |
| Answer» The mode of nutrition in Amoeba is holozoic. The process of obtaining food by Amoeba is called phagocytosis. The various steps involved in the nutrition of Amoeba are: ingestion, digestion, absorption, assimilation, and egestion.Ingestion - When a food particle comes near Amoeba, then Amoeba ingests this food particle by forming temporary finger-like projections called pseudopodia around it. The food is engulfed with a little surrounding water to form a food vacuole inside the Amoeba.Digestion - The enzymes from surrounding cytoplasm enter into the food vacuole and break down the food into small and soluble molecules by chemical reactions.Assimilation - The digested food present in the food vacuole of Amoeba is absorbed directly into the cytoplasm of Amoeba cell by diffusion. The digested food spreads out from the food vacuole into the whole of Amoeba cell. After absorption of food, the food vacuole disappears. A part of the food absorbed in Amoeba cell is used to obtain energy and the remaining part of absorbed food is used for growth and repair.Egestion - When a considerable amount of undigested food collects inside Amoeba, then its cell membrane suddenly ruptures at any place and the undigested food is thrown out of the body of Amoeba. | |
| 54756. |
How many types of rna are found in organisms? |
| Answer» Three | |
| 54757. |
How can you prevent rusting of iron?(give at least 5 metjofs) |
| Answer» Galvanising Painting Oiling | |
| 54758. |
What ia acid |
| Answer» Those substances which give H+ ions in their aqueous solution is known as ......... | |
| 54759. |
What ia respiration |
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Answer» Food+energy-=co2+h2o+energy Respiration is a cellular process in which blood cells take o2 for the process of glycolysis |
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| 54760. |
Characterstics of homologous series |
| Answer» The members of a particular\xa0homologous series\xa0have almost same chemicalproperties\xa0due to presence of same functional group. 5. The physicalproperties(like solubility, melting point, boiling point, state) of members of ahomologous series\xa0either gradually increase or decrease with increase in molecular mass. | |
| 54761. |
What do you mean by neutralisation reaction? |
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Answer» The reaction in which anion of acid react with cation of base to give salt and water this reaction is called .........For example KOH + HNO3 = KNO3 + H2O Reaction in which acid and base react with each other to form salt and water is called neutralisation reaction Nature of the compound is neutral . it is neither acidic or basic in nature after reaction . when acid and base reacts gives salt and watetEg. Naoh+ hcl= nacl+ water The reaction between an acid and a base to give salt and water is known as neutralisation reaction. |
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| 54762. |
Why the core of electromagnet must be soft |
| Answer» Soft iron core is used in electromagnets because they get easily magnetised / demagnetised when current is flowing or not flowing along the solenoid. | |
| 54763. |
Hello frnds..Can you tell me something about IUPAC nomenclature..??Plz.. |
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Answer» IUPAC stand for International union of pure and applied chemistry. The IUPAC nomencluture was first given in the year of 1958.That name the carbon compounds by adding suffix and preffix.The number of carbon atoms these words are added as prefix:1=meth2=eth3=prop4=but5=pent6=hex7=hept8=oct9=non10=dec The suffix is added according to functional group such as :1.alkane-ane 2.alkene-ene 3.alkyne-yne4.alkyl-yl5.alchol-ol6.ketone-one7.aldehyde-al8.carboxylic acid-oic acid9.haloalkane-bromo, chloro ,etc I wanna know in detail about IUPAC nomenclature..So plz tell me.. Yup.. it\'s a way of naming carbon compounds... If you want a detailed explanation do let me know...by commenting down here.. Hlo... |
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| 54764. |
What is the observation of activity 6.1 |
| Answer» | |
| 54765. |
Is glass is a insulator?why |
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Answer» Glass is an an insulator because it does have free electrons like conductor to conduct electricity. It has high ristance. Which glass kaanch ka glass or steel glass |
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| 54766. |
How we make a generator to purify hydrogen gas from water |
| Answer» | |
| 54767. |
Name the constituents of blood. Why are white blood corpuscles called the \'Solider of the body\' |
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Answer» WBCsRBCPlatletsLymphWBCs are called soilder of the body as fight against all the harmful microbes that enter our body. The constituent of the blood are : *Red blood cell, White blood cell andPlatelets. W. B. C.are called the \'soldier of the body\' because it protect the cell of the body and act like a soldier in our body. Constituent of blood are rbc, wbc, platelets..Wbc are called "soldiers of body" bcoz they help us to fight from foreign particles |
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| 54768. |
How many hours to study for 95 percent |
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Answer» It dosent matter how many hours you study..but how effectively and consistently you study that matters the most..! 6 hours daily |
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| 54769. |
What is placenta ! |
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Answer» Placenta is a disc like structure present in women\'s womb for nourishment of the baby the material inside the part of a woman’s body where a baby grows (womb) which protects the baby and supplies the food through a tube (umbilical cord) |
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| 54770. |
Explain extraction of mineral |
| Answer» Minerals can be extracted by:Mining: The process of taking out minerals from rocks buried under the earth’s surface is called mining.Drilling : A drilling rig is a machine which creates holes, called boreholes in the ground. Drilling rigs can be massive structures housing equipment used to drill water wells, oil wells, or natural gas extraction wells.Quarrying: Minerals that lie near the surface are simply dug out, by the process known as quarrying. | |
| 54771. |
When was Newton Born? |
| Answer» 4 January 1643 | |
| 54772. |
Why carbon can make so many organic or carbon compounds |
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Answer» Because of two reason: tetravalency and catanation power. Because the carbon valence is four |
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| 54773. |
How we identified group period in periodic table |
| Answer» We can identify group and period in many way but in a period element have increasing valence electron in their outermost shell whereas in group element have same valence electron in their outermost shell. | |
| 54774. |
What is nich |
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Answer» Yes niche Nich is a fit of species living in environment adopted by them Is it niche?????? |
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| 54775. |
What is tissue culture??? |
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Answer» Growing new plants by removing tissues or separating cells from the the growing tip of a plant. Tissue culture is the process of culturing single line cells under sterile, controlled conditions, in vitro by exposing them to nutrients, hormones and specific amount of sunlight. There are different steps involved in the tissue culture process.\xa0Step 1: Material is selected and sterilized for propagation of cells, in vitro initiating the process of culturing the cells.\xa0Step 2: The plant material is re-divided and placed in separate plates with medium rich in plant growth regulators. These growth regulators induce shoot formation. This process can be repeated till the desired number of plants is obtained.Step 3: The hormones which induce the formation of root are introduced into the medium. Now, complete plantlets are formed. These plantlets are transferred from lab into the green house for further growth. |
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| 54776. |
What is the real and inverted? What is meaning of this real and inverted? |
| Answer» A real image occurs where rays converge, whereas a virtual image occurs where rays only appear to converge. Real images can be produced by concave mirrors and converging lenses, only if the object is placed further away from the mirror/lens than the focal point and this real image is inverted. | |
| 54777. |
What is the role of HCL |
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Answer» HCL kills many bacteria enter inside stomach by food and also provide acidic medium Hcl also help in killing bacteria that enters through the food HCl is present in the stomach.It doesn\'t digest the food.It\'s role is to make the medium of food in stomach acidic so that the enzyme like pepsin can act on the food as it is active only in acidic medium. HCL is an acid and it is present in our stomach and it provides a acidic atmosphere to our stomach to digest the food. |
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| 54778. |
Why does the sunrise is seen before 2 minutes and sunset seen after 2 minutes. |
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Answer» Due to atmostpheric reaction Bending of light due to atmospheric refraction |
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| 54779. |
What is meant by denatured alcohol? What is the need to denature alcohol |
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Answer» Some poisonous materials are added to alcohol so drinkers cannot drink it .it is known as denatured alcohol When ethyle alcohol contains a sample of methyle alcohol then it is known to be denatured alcohol.It is needed because alcohol required for industrial ,hospital etc purpose is of cheap rate and it can be misused by the people. Denatured alcohol: when ethanol solution is mixed with methanol or coopersulphate then the solution is called Denatured alcohol Alcohol is Denatured to avoid drinking of the duty free alcohol meant for industrial purpose. It refers to ethanol which is made unfit for drinking purposes by adding small amts of poisonous substances like methanol, pyridine and CuSO4. Its pure form is used in industrial purposes poisoning of ethanol is done to stop the misuse of industrial alcohol for drinking purposes. |
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| 54780. |
Cleaning action by detergent |
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Answer» S chand ki kitab ka page no. 259 dekh lo In detail |
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| 54781. |
The formula of cinnabar is H2O |
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Answer» Cinnabar is the sulphide ore of mercury. (HgS). HgS Cinnabar is the sulphide of mercury (HgS) No H2S mercuric sulphide |
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| 54782. |
What is dolomite? |
| Answer» The true dolomite mineral is a calcium magnesium carbonate and has the chemical formula CaMg(CO3)2. There is also dolomitic limestone, which is limestone that contains dolomite, but it is not specifically the mineral itself. Dolomite is a double salt. This means that while it is composed of two salts (calcium and magnesium) it has a different structure than either of those individual salts. Dolomite may be colorless, white, pinkish, or slightly blue. The crystals of dolomite may be transparent, translucent (semitransparent), or completely opaque (not able to be seen through). | |
| 54783. |
State any five differences between meosis and mitosis . |
| Answer» Mitosis has one round of cellular division and genetic separation whereas meiosis has two rounds. The two processes are also different because in mitosis the daughter cells are exactly identical to the parent cells compared to meiosis where the daughter cells are not genetically identical to the parent cells. | |
| 54784. |
Explain calcination |
| Answer» The process in which a carbonate ore is heated strongly in the absence of air to convert it into metal oxide. | |
| 54785. |
What is oms law |
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Answer» According to ohms law At constant tempreature the current flowing through a conductor is directly proportiomal to the potential differnce across its ends.. The current(I) passes through a conductor is directly proportional to the potential difference(V) applied across its ends at constant temperature and physical conditions.V=IR Ohm\'s law formula. The resistor\'s current I in amps (A) is equal to the resistor\'s voltage V in volts (V) divided by the resistance R in ohms (Ω): V is the voltage drop of the resistor, measured in Volts. ???? Ohm\'s law - V=IR at constant temperature. Here, V is potential difference , I is current and R is resistance. At the physical conditon the strength of current is directly proptional to the potential difference across the ends of conductor. According to ohm\'s law at a constant temperature ,the current flowing through a conductor is directly proportional to the potential difference across its ends. At a constant temperature |
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| 54786. |
Why bile juice do not help in digestion |
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Answer» Bile juice plays an important role in the digestion of fats.Bile juice has bile pigments such as bilirubin .They break down fat globules into smaller globules so that the pancreatic enzymes can easily act on them.Bile juice also makes medium alkaline due to presence of NaHCO3 and also activates lipase.?????? Bile juice helps in the digestion of fats and it also makes the food alkaline which plays a major role in digestion . |
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| 54787. |
Who is father of genetics? |
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Answer» Gregor Johann Mendel is known as the father of genetics because he was the first who propounded the laws of heredity in plants Gregor johann mendel Gregor johann mendel |
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| 54788. |
What is human cell amobia |
| Answer» Can you explain your question plz.... | |
| 54789. |
Define organic compound |
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Answer» Those compound which contain components of carbon are known as organic compound An organic compound is a compound whose molecules contain C, and usually at least one C-C or C-H bond. Life on earth would not be possible without carbon. Other than water, most molecules of living cells are carbon-based, and hence are referred to as organic compounds. The main classes of organic compounds we will investigate in this section include carbohydrates, lipids, proteins and nucleic acids. All the minerls are organic compound |
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| 54790. |
resistance is 2OHM ,6OHM,3OHM to connect with wires with 12 volt of the total current |
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Answer» 6/55 Ampere current findat karna hai Find kya krna hai |
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| 54791. |
What is function of lymph |
| Answer» 1) It supplies nutrition and oxygen to those parts where blood cannot reach.2) It drains away excess tissue fluids.3 Lymph returns proteins to the blood from the tissue spaces.4) Fats from the intestine are also absorbed through the lymph.5) The lymphocytes and monocytes of lymph act as defensive cells of the body.6) The lymph also removes bacteria from tissues. | |
| 54792. |
What is inheridity |
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Answer» Those thing which are inherit from parent to offspring is known as heridity Heredity is known as the phenomena of inheritance of traits or features of parents to offspring’s or progeny. A trait is any characteristic that is transferred from parent to offspring. It is the continuity of features from the prior generation to the next which is present in the fertilized egg or zygote.That zygote develops into an organism of a particular type. So Heredity and Evolution are one of the most crucial branches of biology since without understanding it, the cycle of life on Earth cannot be understood. Without heredity, there can be no evolution either. |
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| 54793. |
is cbse 18-19 syllabus released |
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Answer» Yes Where were you till now ? It has been already released 6 months ago. |
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| 54794. |
Which part of the body in amoeba and earthworm is take place for excretion??? |
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Answer» In amoeba contractile vacoule and in earthworm flame cells In amoeba cell memberane,and earthworm nephridia |
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| 54795. |
State reason for the following the glottis is guarded by epiglottis |
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| 54796. |
Explain working of generator. |
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Answer» Hey!Working of a generator :1.Let abcd be a rectangular coil between North and south poles of a bar magnet 2.Attach abcd to a battery with slip rings b1 and b2(Slip rings are used to rotate the rectangular coil)Now, working 1.When the two rings are rotated such that arm ab moves up and CD moves down, current is generated in the coil kept in magnetic field2.by applying Fleming\'s right hand rule, the induced current is set up along the direction ab and cd3. After half a rotation arms cd moves up and ab moves down. As a result the direction of induced current changes that is, current now flows in direction dcba (earlier current was flowing in abcd) 4.the current in the slip rings also reverses and flows from b2 to b1(earlier b1 to b2) 5.such a current changes direction after equal intervals of time and hence called an ac generator too Hope you understood ?? Generator is a machine that converts mechanical energy into electrical energy. It works based on principle of faraday law of electromagnetic induction.Generators are basically coils of electric conductors, normally copper wire, that are tightly wound onto a metal core and are mounted to turn around inside an exhibit of large magnets. An electric conductor moves through a magnetic field, the magnetism will interface with the electrons in the conductor to induce a flow of electrical current inside it. |
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| 54797. |
Human eye and the colourful world class 10 come or not |
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Answer» How and where i can see syllabus Why don\'t you see syllabus ?Why are you wasting our time by asking these silly questions ? Ya it will come in borads It is come in exam because this is important chapter It will come in the exam of boards???? . |
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| 54798. |
Structure of cyclopentane |
| Answer» It will look like a pentagon with 5 sidesTake 5 CH3 in the form of pentagon and join them | |
| 54799. |
What is convex lens? |
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Answer» Those lens whose middle portion is thick and edges are thin. A lens having two spherical surface bulging outwards is called Convex Lens. It is also known as biconvex lens because of two spherical surface bulging outwards. These type of lenses can converge a beam of light coming from outside and focus it to a point on the other side. This point is known as the focus and the distance between the centre of the lens to the focus is called the focal length of convex lens. It is outwards bluged |
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| 54800. |
Is nitrous oxide gas is good for green house??? |
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Answer» Yaa yas |
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