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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.
| 39651. |
What is turbine |
| Answer» A turbine is a machine that transforms rotational energy from a fluid that is picked up by a rotor system into usable work or energy. Turbines achieve this either through mechanical gearing or electromagnetic induction to produce electricity.Turbine : A turbine has blades at one end and electromagnets at the other which create electricity as the blades move. | |
| 39652. |
Name two methods by which we can identify the age of fossils. |
| Answer» Two methods to determine the age of fossils:Relative dating:When dug into the Earth, the fossils closer to the surface are more recent as compared to the fossils found in deeper layers.Radiometric dating:The fossils can also be dated by detecting the ratios of different isotopes of the same element in the fossil material. This process is known as radiocarbon dating. When living organisms change into fossils, their rate of radioactive C14 decay decreases slowly. In this way, the age of fossils can be determined with the help of radioactive C14. | |
| 39653. |
Described menstrual cycle? |
| Answer» The menstrual cycle is the time from the first day of a woman\'s period to the day before her next period,The menstrual cycle is the regular natural change that occurs in the female reproductive system (specifically the uterus and ovaries) that makes pregnancy possible. The cycle is required for the production of ovocytes, and for the preparation of the uterus for pregnancy.The length of the menstrual cycle varies from woman to woman, but the average is to have periods every 28 days. Regular cycles that are longer or shorter than this, from 21 to 40 days, are normal. | |
| 39654. |
Uses of CaOCl² |
| Answer» Uses of bleaching powder: It is used for bleaching dirty clothes in the laundry, as a bleaching agent for cotton and linen in the textile industry. It is a strong oxidizing agent hence used as an oxidizer in many industries. It is used as a disinfectant which is used for disinfecting drinking water. | |
| 39655. |
How iron is attracted by magnet |
| Answer» Magnets attract iron due to the influence of their magnetic field upon the iron. Before a piece of iron first enters the magnetic field of a magnet. the polarization of the iron\'s atoms is random. As it is exposed to the magnetic field, the atoms of the iron begin to align their electrons with the flow of the magnetic field, which makes the iron magnetized too. This, in turn creates an attraction between the two magnetized objects. Therefore a piece of iron that is exposed to a strong magnet becomes magnetic itself for a period of time afterward. | |
| 39656. |
Dry hydrogen chloride gas does not turn blue litmus red whereas HCl does. Give one reason |
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Answer» Because in dry HCL there is less concentration of h positive ions so that dry HCL gas does not turn blue Litmus red where is HCL does because of more h positive ions concentration Acids are those which produce free H+ in aquous medium.HCl acid produces free H+ but HCl gas doesnt produce free H+ therefore HCl acid gives litmus test and HCl gas doesnt give litmus test. |
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| 39657. |
What is galvanisitation |
| Answer» Galvanization is the process of coating Zinc layer on substances made up of copper or steel or other metals, which gets corrosion when exposed to moist air for long time. Using galvanization process prevention of corrosion is possible on the metal surface. | |
| 39658. |
What is the function of brain ? |
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Answer» The function of brain involves receiving information from the rest of the body, interpreting that information, and then guiding the body\'s response to it. Types of input the brain interprets include odors, light, sounds, and pain. The brain also helps perform vital operations such as breathing, maintaining blood pressure, and releasing hormones (chemical signals that control certain cells and organs). Brain\'s functionare various type : pons were the part which connect other part of the brain: cerebellum is used to balancing our body :Crebrum is used to control our emotions etc. |
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| 39659. |
Why the energy flow in biosphere is unidirectional |
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Answer» Energy flow in biosphere is unidirectinal because when primary consumer consume energy from the first trophic level producers then the consumed energy is consumed by the next trophic level and so on. Consumed energy from the second trophic cannot go back to the first trophic level. This is why energy flow is unidirectional The producer plants convert solar energy into chemical energy in the form of organic compounds. The primary consumers (herbivores) derive their nutrition from the producers. During the transfer of energy in a food chain, there is energy lost at each trophic level. According to the energy transfer law, only 10% of energy is transferred from one trophic level to the other. As a result at the decomposer level, no energy is left for recycling what remains is the only organic matter of dead organisms. Hence, the energy flow in the biosphere is unidirectional. |
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| 39660. |
Relation between object distance image distance and focal length ofa spherical mirror |
| Answer» 1/v-1/u=1/f | |
| 39661. |
Is displacement reaction is endothermic reaction |
| Answer» Yes bro sometimes Displacement reaction is endothermic reaction and sometime combination reaction is exothermic. | |
| 39662. |
Solved sample paper for physics |
| Answer» You can check sample papers here :\xa0https://mycbseguide.com/cbse-sample-papers.html | |
| 39663. |
Liver does not secrete any digestive enzymes even it Play important role in digestive system |
| Answer» Bile produce by liver contain bile salt which help to emulsify fat i.e. break down fat into its simpler form. Due to this simpler form of fat is easily digest in small intestine. | |
| 39664. |
internal heart |
| Answer» The heart lies in the thoracic cavity between the lungs. The heart is also protected within the thorax by the double-layered pericardium, which is fluid filled to prevent friction inside the chest cavity.The human heart consists of 4 chambers- 2 upper chambers called atria and 2 lower chambers called ventricles.The two auricles or atria are thin-walled and are separated from each other by a thin inter-atrial septum.The right atrium receives venous blood (deoxygenated blood having very little O2) from the entire body through a superior and inferior vena cava. The left smaller atrium receives oxygenated blood from the lungs through\xa0pulmonary veins.The two auricles (atria) are separated from the ventricles by the auriculo-ventricular septum guarded by membranous valves. The valve separating right atrium from right ventricle is called right atrio-ventricular valve or tricuspid valve made up of three flaps. The valve separating left atrium from left ventricle is called left atrio-ventricular valve or mitral valve, formed of two flaps. These valves are attached with fine cords with the papillary muscles of the ventricular wall. These valves only allow blood flow from auricles into ventricles and not in opposite direction.Both the ventricles are separated from each other by a thick inter-ventricular septum. The wall of left ventricle is much thicker than that of right ventricle. The left ventricle pushes blood into aorta which supplies blood to entire body. The opening of aorta is also guarded by a valve formed of 3 semilunar flaps. The right ventricle pumps venous blood into lungs by a pulmonary aorta. Its opening is also guarded by a valve, having 3 semilunar flaps. These valves allow the flow of blood from ventricles into the aorta and not back. Heart is formed of cardiac muscle fibres, which rhythmically contract the heart without feeling fatigue. | |
| 39665. |
The electric motor get energy from electricity then from where the heart get energy? |
| Answer» | |
| 39666. |
Difference between Fussion and Fission |
| Answer» Both fission and fusion are nuclear reactions that produce energy, but the applications are not the same. Fission is the splitting of a heavy, unstable nucleus into two lighter nuclei, and fusion is the process where two light nuclei combine together releasing vast amounts of energy. | |
| 39667. |
How plant cells change their shape? |
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| 39668. |
What is diagonal relationships |
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| 39669. |
What happens to a light ray when it passes through the focus of a concave lens |
| Answer» Yes....it will go parallel | |
| 39670. |
Phenotype and genotype ratio of monohybrid cross |
| Answer» Phenotype ratio- 3:1Genotype ratio- 1:2:1 | |
| 39671. |
General formula for. Propene |
| Answer» C3H6 | |
| 39672. |
How much masks of each chapter in 2017-2018 10exam |
| Answer» WHERE ARE YOU FROM BRO? | |
| 39673. |
What are functions of chloroplast |
| Answer» A chloroplast is an organelle unique to plant cells that contains chlorophyll (which is what makes plants green) and is responsible for enabling photosynthesis to occur so that plants can convert sunlight into chemical energy.Functions:(1) Absorption of light energy and conversion of it into biological energy.(2) Production of NAPDH2 and evolution of oxygen through the process of photosys of water.(3) Production of ATP by photophosphorylation. NADPH2 and ATP are the assimilatory powers of photosynthesis. Transfer of CO2 obtained from the air to 5 carbon sugar in the stream during dark reaction.(4) Breaking of 6-carbon atom compound into two molecules of phosphoglyceric acid by the utilization of assimilatory powers.(5) Conversion of PGA into different sugars and store as stratch. The chloroplast is very important as it is the cooking place for all the green plants. All heterotrophs also depend on plasts for this food. | |
| 39674. |
How does graphite exist without completing it\'s octet in outer most orbit ? |
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| 39675. |
How can we change a.c into d.c.? |
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Answer» By using a A.C to D.C converter or vise versaIt is available in electrical shop Mobile charge is used to convert AC into DC current. |
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| 39676. |
Explain functioning of heart |
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Answer» The heart is a muscular organ about the size of a fist, located just behind and slightly left of the breastbone. The heart pumps blood through the network of arteries and veins called the cardiovascular system.The heart has four chambers:\tThe right atrium receives blood from the veins and pumps it to the right ventricle.\tThe right ventricle receives blood from the right atrium and pumps it to the lungs, where it is loaded with oxygen.\tThe left atrium receives oxygenated blood from the lungs and pumps it to the left ventricle.\tThe left ventricle (the strongest chamber) pumps oxygen-rich blood to the rest of the body. The left ventricle’s vigorous contractions create our blood pressure.The coronary arteries run along the surface of the heart and provide oxygen-rich blood to the heart muscle. A web of nerve tissue also runs through the heart, conducting the complex signals that govern contraction and relaxation. Surrounding the heart is a sac called the pericardium. The blood provides your body with the oxygen and nutrients it needs. It also carries away waste. Your heart is sort of like a pump, or two pumps in one. The right side of your heart receives blood from the body and pumps it to the lungs. |
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| 39677. |
What is a carbon |
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Answer» Carbon is a element having atomic no 6 and it\'s symbol is C Carbon is a chemical element with symbol C and atomic number 6. It is nonmetallic and tetravalent making four electrons available to form covalent chemical bonds.It has two main forms (diamond and graphite) and which also occurs in impure form in charcoal and coal. |
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| 39678. |
What is iupacnomenclature nomenclature |
| Answer» It is the set of rules to name organic compounds By using prifix , suffix, root name and or function group | |
| 39679. |
Can u prove light acts both as wave and particles In a single experiment |
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| 39680. |
Guys.......Why menstrual cycle occurs after every 28 days????????? |
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| 39681. |
Which book I prefer for learning schand or ncert |
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| 39682. |
Genes are present at |
| Answer» Ya I also confuse in this Bt in S.chand I read that #In DNA chromosomes r present and in chromosomes genes r present .... | |
| 39683. |
Why do we require extra amount of energy |
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| 39684. |
Why sun\'s temperature is so high |
| Answer» It is due to nuclear reaction called nuclear fusion.\xa0 | |
| 39685. |
How many vertical columns are there in modern periodic table and what are they called |
| Answer» There are totally 18 vertical columns in the modern periodic table. they are called as groups. | |
| 39686. |
What is maxwell right hand thumb rule |
| Answer» The\xa0Right Hand Thumb Rule. Hold the wire carrying current in your\xa0right hand\xa0so that the\xa0thumb\xa0points along the wire in the direction of the current, then the fingers will encircle the wire in the direction of the lines of magnetic force.\xa0Maxwell\'s right hand thumb rule\xa0(corkscrew\xa0rule) | |
| 39687. |
Please tell me about Moseley\'s modern periodic table. |
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| 39688. |
What is meosis |
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| 39689. |
Two solution whose pH 1 and 14. Which has more hydrogen? |
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Answer» 1 Ph1 |
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| 39690. |
What is the no. of elements present in 18cen |
| Answer» 30 elements | |
| 39691. |
difference between fission and fragmentation |
| Answer» The fragmentation is a mechanical event. The body parts break down into un-equal parts by external forces. The broken parts may develop into new organisms.The fission is a process of equal division of prokaryotic cells into equal parts. It is a simple process of multiplication. Here the DNA strands are equally divided into two daughter cells. | |
| 39692. |
Why is the colour of clear sky blue |
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| 39693. |
Explain electric motor |
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| 39694. |
What is atmosphere |
| Answer» Atmosphere is a sphere where a large number of gases are present. | |
| 39695. |
Define Electric generator. |
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| 39696. |
What do you understand by VARIATION and EVOLUTION? ???????? |
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Answer» And the term evolution means the process of slow continues and ir-reversible change which leads to form more complex advanced organism from the exiting ones. The term variation means the differences in the characters (or traits) among the individuals of a species is called variation. |
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| 39697. |
Common name for methanol |
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Answer» Methyl alcohol is chemical name Just see ? their Methyl alcohol |
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| 39698. |
Which book for science to secure 100 %marks |
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Answer» Evergreen I think 100%success or exam idea Ya NCERT is also good bt in this their is no briefly explanation I think in bio Modern abc and s.chand NCERT...! ?? |
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| 39699. |
Why carbon compounds did not conduct electricity????? |
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| 39700. |
What is the common name of methanol? |
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Answer» Methyl alcohol Master AMAN KUMAR methyl alcohol is also a chemical name Just go and search in google Alcohol Common name of methanol is methyl alcohol. The common name of methanol is Alcohol and wood. |
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