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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.
| 9851. |
What is soda lime ?? |
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Answer» Soda lime is a mixture of Sodium hydroxide and potassium or sodium hydroxide. Chemical formula: CaHNaO2. Soda lime has a unique ability to absorb moisture from air. It also absorbs carbon dioxide from air. Hence it is used in manufacture of gas masks. Soda lime is a mixture of NaOH & CaO chemicals, used in granular form in closed breathing environments. |
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| 9852. |
डिफरेंस between electro ? and bar ?? |
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| 9853. |
what is the valency of titanium |
| Answer» Titanium is a d-block element, present in 3d series with atomic number 22. The valence shell configuration is . Since, there are 2 electrons in the valence shell, the valency of the titanium will be 2. | |
| 9854. |
Draw the ray diagrams of convex and concave lens |
| Answer» Pls send | |
| 9855. |
importance of pH in everyday life. |
| Answer» Uses of pH:\xa01)Digestion of carbohydrate does not take place in stomach due to acidic pH.2)Some of the metallic vessels can cleaned according to pH.3)Tooth decay is also due to pH.4)To measure hydrogen ion concentration. | |
| 9856. |
Define process of formation of urine in humans from Bowman capsule to ****. |
| Answer» Urine\xa0is\xa0formed\xa0in the kidneys through a filtration of blood. The\xa0urine\xa0is then passed through the ureters to the bladder, where it is stored. During\xa0urination, the\xa0urine\xa0is passed from the bladder through the urethra to the outside\xa0of the body.\xa0The kidneys filter unwanted substances from the blood and produce\xa0urine\xa0to excrete them. There are three main\xa0steps\xa0of\xa0urine formation: glomerular filtration, reabsorption, and secretion. These\xa0processes\xa0ensure that only waste and excess water are removed from\xa0the body.\xa0Bowman\'s capsule\xa0(or the\xa0Bowman capsule, capsula glomeruli, or glomerular\xa0capsule) is a cup-like sack at the beginning of the tubular component of a nephron in the mammalian kidney that performs the first step in the filtration of blood to form urine. | |
| 9857. |
List the methods of prevention of corrosion and rancidity |
| Answer» Corrosion is the process in which metals are eaten up gradually by the action of air, moisture or a chemical (such as an acid) on their surface. Rusting of iron metal is the most common form of corrosion. During the corrosion of iron, iron metal is oxidised by the oxygen of air in the presence of water (moisture) to form hydrated iron oxide called rust.The condition produced by aerial oxidation of fats and oils in foods marked by unpleasant smell and taste is called rancidity. It spoils the food materials prepared in fats and oils which have been kept for a considerable time and makes them unfit for eating.Methods to prevent rancidity:(i) Rancidity can be prevented by adding anti-oxidants to foods containing fats and oils.(ii) It can be prevented by packaging fat and oil containing foods in nitrogen gas.(iii) Rancidity can be retarded by keeping food in a refrigerator.(iv) Rancidity can be prevented by storing food in air-tight containers.(v) Storing foods away from light can also prevent rancidity. | |
| 9858. |
What is bio gas ?? |
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Answer» Thank ? you all Bbiogas is made from cow dung Biogas is the mixture of gases produced by the breakdown of organic matter in the absence of oxygen (anaerobically), primarily consisting of methane and carbon dioxide |
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| 9859. |
Neurological |
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| 9860. |
Ph change as cause of tooth decay Why |
| Answer» pH change - Cause of tooth decay:Tooth decay starts when the pH in the mouth falls below 5.5. Tooth enamel is made up of calcium phosphate which is the hardest substance in the body. It is insoluble in water but gets corroded when the pH in the mouth falls below 5.5. The bacteria present in the mouth produce acids due to the degradation of sugar and food particles after eating. Hence, to prevent tooth decay, the mouth should be rinsed after eating food and toothpastes which are basic should be used for cleaning teeth to neutralise the excess acid. | |
| 9861. |
Spinal cord originates from |
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Answer» It originates from Medulla Oblongata and ends into lumbar region of vertebral column Medulla oblangata |
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| 9862. |
Differentiate btw electrons and neutrons |
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Answer» Protons are found in the nucleus; they belong to the group of nucleons.......Neutrons are found in the nucleus; they belong to the group of nucleons........ I want more difference Electrons are of negative charge and netrons are neutral...... |
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| 9863. |
What is the rancidity |
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Answer» When the fat containing food is exposed in air, then it gets oxidized and prevent rancidity When food containing fat and oilsare exposed to the atmosphere ,the oxidation of fatand oil occurs, thisIs known as rancidity. ????? |
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| 9864. |
What are the advantages of corrosion |
| Answer» Corrision prevent entery ofwater and air into metal or any substance and metal safe from rusting. | |
| 9865. |
What is length of stomach |
| Answer» Depending on the position of your body and the amount of food inside it, your stomach is capable of alterations in size and shape. Your empty stomach is about 12 inches long. At its widest point, it\'s about 6 inches across. | |
| 9866. |
What are parasites |
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Answer» Parasites are those organisms which survive on other organisms for their food The word “parasite” is derived from the Greek word meaning, “the one that eats at the table of others”, and is estimated to be from around 5900 BC.Parasites are an incredibly varied group of organisms that live within host cells. They are smaller than their host organism and reproduce faster by causing more damage to the host. They receive all sorts of benefits like food and\xa0shelter from the\xa0host. Their size ranges from tiny, single-celled organisms to worms over 20- 30 m in length.For example- Tapeworms, that\xa0are flat, segmented worms, live in the intestines of animals by\xa0absorbing the host’s nutrients. |
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| 9867. |
Give two examples of fossil fuels. |
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Answer» Main coal and petroleum Coal,natural gas Two examples of fossil fuels are coal and petroleum. Fossil fuels are the non-renewable fuel formed due to burying of plants and animals under sedimentary layers of earth, snow or oil millions of years ago, e.g., coal and petroleum. |
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| 9868. |
What is the length of stomach |
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Answer» 12 inches long in 6 inches wide Depending on the position of your body and the amount of food inside it,your stomach is capable of alterations in size and shape your empty stomach is about 12 inches long .at it\'s widest point, it\'s about 6 inches across |
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| 9869. |
In redox reaction which reaction gain electrons and loos electrons and how? |
| Answer» The reaction in which electrons are gain us called oxidation and in which election lose is called reduction. | |
| 9870. |
How does the electronic configuration of an atom relate to its position in the periodic table? |
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Answer» Read it and after that see in the period table The electronic configuration of elements and their position in the periodic table are related to each other. From the electronic configuration of elements, we can determine the period and group to which the elements belongs.Consider sodium with atomic number 11. K,L and M shells have 2,8 and 1 electron each. Since there are 3 principal energy levels, sodium belongs to third period.M shell (valence shell) has only 1 electron. So sodium belongs to group 1 or IA |
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| 9871. |
How can we easily solve rearrangment? |
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| 9872. |
Why do copper vessels lose their shine when exposed to air |
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Answer» Because it corrodes Nice ankita Because copper reacts with sulphur gas present in air and forms copper sulphide on their surface Hence they lose their shine and develops a brown coating on it Because of corrosion |
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| 9873. |
What are muscle cramps ? |
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Answer» Muscles cramps are the pain which occurs in muscles due to anaerobic respiration started When we do vigorous exercise, our body requires instant energy and it is filled through anaerobic respiration. As anaerobic respiration is a two-step process, it gives energy much faster. Hence, This makes the muscle cells to break down glucose to produce lactic acid and energy. Since a lot of lactic acid gets accumulated in our muscles, this causes muscle cramps. A painful ,involuntary contraction of a muscle is called muscle cramp |
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| 9874. |
What is amalgam ? Some one here please chat me |
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Answer» A mixture or an alloy of mercury with a number of metals or alloys such as sodium as well as with some non-metals is known as amalgam.Uses:1. Sodium is highly reactive metal and therefore it is difficult to transport. To lower its reactivity, it is mixed with mercury.2. Dental amalgam is a mixture of mercury and a silver-tin alloy and is used for fillings in teeth. It is an alloy of mercury |
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| 9875. |
Atomic no of neon |
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Answer» 10 10 |
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| 9876. |
current flowing in the circuit |
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Answer» Aur koi help No problem Thxxx Flow of charge in circuit is called current flow in the current |
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| 9877. |
Which reaction is occur In body To brekdown molecule |
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Answer» Catabolic reactions these are the reactions which breakdown organic molecules for energy. Break down sugars for energy and fat for energy, Decomposition reaction |
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| 9878. |
Calculate the number of electrons |
| Answer» 1.6*10-19 | |
| 9879. |
What do you understand by management of natural resources |
| Answer» Natural resource management is process to save or utilise in a proper way | |
| 9880. |
Definition of chemistry |
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Answer» A brach of science in which we study about chemicals and reations occur in nature Chemistry is one of the physical science that help as to describe and explain our world Chemistry is the study of matter its properties, how and why substance combine or separate to form other substance The structure of a particular substance. |
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| 9881. |
In nutrition in human beings what does pancreatic enzyme does ???? |
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Answer» Secrets lypace ;amylase and trypsin to breakdown fats ; proteins and carbohydrates. Secrets lypace, amaylase, trapsin |
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| 9882. |
Why it is important to study writters book with NCERT books |
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Answer» yes, it is write it help us to understand any thing in easy way It help us to understand the chapters in easy way |
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| 9883. |
Apart from cow dung what can be used for biogas plant |
| Answer» Vegetable wastage | |
| 9884. |
Describe three type of Decomposition Reaction |
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Answer» Types of decomposition reactionLet us look at the three main types of decomposition reactions which we see around us.\t\tThermal decomposition reaction A thermal decomposition reaction can be defined as a decomposition reaction which is activated by thermal energy. The reaction is generally endothermic as energy is required to break chemical bond in order to separate the constituent elements. example of thermal decomposition reaction CaCO3 → CaO + CO2 When heated Calcium Carbonate,decomposes into Calcium Oxide and Carbon Dioxide. This process is employed in the manufacturing of quick lime which is an important component in industries.\t\t\tElectrolytic decomposition reaction\t\tAn electrolytic decomposition reaction is a type of decomposition reaction in which the activation energy for decomposition. Example of electrolytic decomposition reaction Dissociation of water:2H2O→ 2H2 + O2\t\t\tPhoto decomposition/ photolytic decomposition/ photochemical decomposition \t\tA photo decomposition is the type of decomposition reaction in which the reactant is broken down to its constituents by photons.Example of photo decomposition reaction O3 + hν → O2 + O(1D)Photolysis occurs in the atmosphere wherein ozone molecules is broken down into oxygen molecule and atomic oxygen.\t\t Light, electrolisis and thermal decomposition reaction |
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| 9885. |
Precipitation activity |
| Answer» Those reactions in which two compounds react by an exchange of ions to form two new compounds are called double displacement reactions.Example: AgNO3 (aq) + NaCl (aq) {tex}\\rightarrow{/tex}\xa0AgCl (s)+ NaNO3 (aq)When silver nitrate solution is added to sodium chloride solution, then a white precipitate of silver chloride is formed alongwith sodium nitrate solution. In this reaction, two compounds, silver nitrate and sodium chloride, react to form two new compounds, silver chloride and sodium nitrate. | |
| 9886. |
How much energy is given to each coulomb of charge passing through a 10 V battery |
| Answer» The energy given to each coulomb of charge is equal to the amount of work which is done in moving it.Now we know that,Potential difference = Work Done/ChargeWork done = Potential difference — chargeWhere, Charge = 1 C and Potential difference = 10 VW = V × QW = 6 × 1Work done or energy = 6 joules. | |
| 9887. |
Function of nephron in kidney |
| Answer» | |
| 9888. |
What is WHOand how it works |
| Answer» World health organization | |
| 9889. |
Explain joule law |
| Answer» | |
| 9890. |
How electric generator works |
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Answer» Electric Generator is based on the principle of Fleming\'s Right hand rule. The current whose direction reverses with the movement of the coil is known as the alternating current. Most appliances use Alternating Current. Electric generator works when its switch is on |
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| 9891. |
Define alkali |
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Answer» It is a type of base which is soluble in water. It is a strong base |
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| 9892. |
How does the creation of variations in a species promote survival? EXPLAIN IN SHORT. |
| Answer» Some of the variations may be helpful to the organisms in the prevailing natural conditions. Organisms with such positive variations would survive. Over the period variations keep appearing in a species. The favorable variations are chosen by natural selection and promotes survival of the species.Depending on the nature of variations different individuals would have different kinds of advantage e.g., Bacteria variants which can tolerate heat have better survival chances in heat wave in comparison to non-variant bacteria having no capacity to tolerate heat wave.However not all variations are useful or beneficial. | |
| 9893. |
Give the SI unit of electric current |
| Answer» Ampere...... | |
| 9894. |
Properties of strong acid |
| Answer» The concentration of hydronium ions in a strong acid solution is equal to the concentration of the acid. | |
| 9895. |
Which type of digestion occur in amoeba and human being |
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Answer» Noy persent that was part Digestion in Amoeba in intracellular taking place within the cell taken in remain in a food vacuole for gastric vacuole formed by a cell membrane and small percent of cytoplasm |
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| 9896. |
Examples of electrolytic decomposition reaction |
| Answer» H2O-------->H2+O2 | |
| 9897. |
Why there is different time in different state of a same country in same time ? |
| Answer» | |
| 9898. |
What is the main difference between electric generator and electric motor. |
| Answer» \tMotorGeneratorAn electric motor is a machine that converts electrical energy to mechanical energy.An electric generator is a machine that converts mechanical energy to electrical energy.`Electric motor follows Fleming’s left-hand rule.Electric generator follows Fleming’s right-hand rule.Motors works on the principle that a current carrying conductor experiences a force when placed in a magnetic field.Generators work on the principle of electromagnetic induction.The shaft of an electric motor is driven by a magnetic force which is developed between the armature and field.The shaft of an electric generator is connected to the rotor which is driven by a mechanical force.In a motor, current is supplied to the armature winding.In a generator, current is produced in the armature winding.Ceiling fans, cars, etc. are all examples of motor.In power stations, generator is used to generate electricity.\t | |
| 9899. |
Living thing |
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Answer» Humans ,animals ,me and you Humans ,animals and plants |
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| 9900. |
Draw a well labelled diagram of human excretory system |
| Answer» How can we draw | |