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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.
| 63051. |
What is basic unit of kidney called? Why it is composed of well blood capillaries |
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Answer» Nephron Neffron Nephrons and because waste like urea are removed from the blood in the nephrons ofkidneys |
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| 63052. |
How a chemical reaction take place |
| Answer» By 1. evolution of gas 2. Change in colour 3. Change in temperature 4. Change in state 5. Formation of precipate | |
| 63053. |
Is the mixture of Biogas and Farm Waste called Biomass? |
| Answer» | |
| 63054. |
Why is calcium sulphate hemihydrate called plaster of Paris |
| Answer» Because on heating gypsum at 373k it loses its water molecules and becomes calcium sulphate hemihydrate and when we stirr it in water it reacts with water and becomes as hard as plaster of paris | |
| 63055. |
limitation of tidal energy |
| Answer» Limited areas of harnessing Tides help in generating small amount of electric energyMaimtenance cost of flood gates is highTides are irregular | |
| 63056. |
Which nutrient serve as the internal energy reserve of the plant |
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| 63057. |
Which part of brain is known relay station |
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Answer» Cerebrum Kidney is not a part of brain. Kidney |
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| 63058. |
When an objet at infinity where does the image forms |
| Answer» On the focus | |
| 63059. |
What will happen if we kill all organisms in one trophic level? |
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Answer» If we kill all the tropic level organism the next level organism doesnot get food and they die and like this many other organism in the worl start to die because all the origanism are linked together as ffod chain. If we kill all the organism in one trophic level then transfer of energy to next level will stop it will lead to over population at one particular level this would distrub the food chain |
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| 63060. |
Define postive and negative charge |
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| 63061. |
What happened when china rose is react with acid? |
| Answer» It\'s colour turns in to pink. | |
| 63062. |
What are the hormones realised by hypothalamus? ? |
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Answer» Nuroharmone is released by hypothalamus . Hypothalamus helps to regulate the harmone secreted by pitutary gland The main hormones released are to maintain the body temperature or to regulate. |
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| 63063. |
Differentiate between fermentation and lactic acid fermentation |
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| 63064. |
How to conserve electricity |
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Answer» Use only how much you want dont use much... 1) Open up your curtains and let the sun shine in! Using natural light whenever possible instead of relying on artificial light can greatly reduce the amount of electricity you use during the day.2) Replacing regular incandescent light bulbs with compact fluorescent (CFL) or LED bulbs is a big energy saver. Incandescent bulbs release 98% of their consumed energy through heat, while CFL and LED bulbs are much more energy efficient and last several times longer.3) Turn off the lights is the simplest, most common way to save electricity, and it really works. Start paying attention to how many lights are on in your house at a given time.4) Use the air conditioner less frequently.5) Use renewable energy. |
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| 63065. |
Why the sun appears reddish in the sunrise and the sunset |
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Answer» The red colour in the sky at sunset (and sunrise) is due to an effect called Rayleigh scattering. There is a similar form of scattering called Mie scattering which is responsible for the white colour of clouds.\xa0Particles in our atmosphere that are approximately the same size as the wavelength of visible light cause the white light from the sun to scatter and split into individual components. Oxygen and Nitrogen (the main components of our atmosphere) scatter violet and blue light due to their small size. This is why the sky appears to be blue in the day time, especially at midday when the Sun is closest to us.\xa0 Moon |
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| 63066. |
What is the difference between egesion and excretion |
| Answer» Egestion:\tThe process of discharging of the undigested food from the animal’s body is called egestion.\tThe material, discharged in the process of egestion is undigested food.\tThe material, discharged in the process of egestion has not passed through the cells.\tEgestion in multicellular animals is carried out through the mouth or ****.\tEgestion is carried out only in animals.Excretion:\tThe process of removal of the waste products, produced in the cells of animals and plants is called excretion.\tThe material, discharged in the process of excretion is metabolic waste.\tThe material, discharged in the process of excretion has passed through the cells.\tExcretion in multicellular animals is carried out through nose / mouth, skin, urethra.\tExcretion is carried out in both plants and animals. | |
| 63067. |
Hi guys tell me about this app |
| Answer» This is a nice app.this app provides us notes ,ncert solutions, explanation , extra questions etc of every chapter in each subject.it also provides the homework help feature where u can ask or answer questions. | |
| 63068. |
Explaion domestic circuit |
| Answer» At our homes, we receive the electric power supply through a main supply (called mains), either supported through overhead electric poles or by underground cables. One of the wires in this supply, usually with red insulation cover, is called live wire (or positive), the other, with black insulation, called neutral wire (or negative).\xa0In India, the potential difference between live wire and the neutral wire is 220 V. At the metre-board of our homes, these wires pass into the electric meter through the main fuse. Through the main switch live wire and the neutral wire are connected to the line wires in the house. These wires supply electricity to separate circuits within the house.Often, two separate circuits are used, one of 15 A current rating for appliances with higher power ratings such as Washing machines, geysers, air coolers, etc. The other circuit is of 5 A current rating for bulbs, fans, etc.\xa0The wire which has insulation of green colour is usually connected to a metal plate deep in the earth near the house. This is used as a safety measure; especially for those appliances that have a metallic body is called the earth wire, | |
| 63069. |
Which acid is present in baking soda? |
| Answer» Tartaric acid | |
| 63070. |
What is life procces |
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Answer» Life process starts with our birth and end with our death.... Processes of life The maintaining of structure and function of body by living oraganism The basic functions an organism perform to survive on the earth such as nutrition ;respiration;transportation ; excretion are called life process . The basic functions performed by the living organisms to maintain their life on this earth is called life process. |
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| 63071. |
Why carbon is versatille in nature |
| Answer» Carbon is a very friendly element. The number of carbon compounds which are known to scientists till date is very large. It is because of this that carbon is called a versatile element. Tetra means four and valency means the number of electrons gained or losed or shared to attain stable configuration. So, tetravalency refers to the phenomenon of sharing four electrons by an element to attain stable condition. Now, the electronic configuration of carbon is 2, 4. It shares four electrons with other elements to attain a stable configuration.This is a property of self-linking. This property depends on size of atom which will decide the M-M bond strength. This property is more unique for carbon as more than thousand atoms of carbon can be linked together. | |
| 63072. |
what type of solution are formed on dissolving different concentration of soap in water ? |
| Answer» Example: You only have to look as far as the nearest bathroom to find an example of an image formed by a mirror. Images in a\xa0plane mirror\xa0are the same size as the object, are located behind the mirror, and are oriented in the same direction as the object (i.e., “upright”).\xa0A plane mirror makes an image of objects in front of it; these images appear to be behind the plane in which the mirror lies. A straight line drawn from part of an object to the corresponding part of its image makes a right angle with, and is bisected by, the surface of the plane mirror. The image formed by a plane mirror is always\xa0virtual\xa0(meaning that the light rays do not actually come from the image), upright, and of the same shape and size as the object it is reflecting. A virtual image is a copy of an object formed at the location from which the light rays appear to come. However, the image is a laterally-inverted "mirror image" of the object. If a person is reflected in a plane mirror, the image of his right hand appears to be the left hand of the image.Plane mirrors are the only type of mirror for which a real object always produces an image that is virtual, erect and of the same size as the object.\xa0 | |
| 63073. |
Is there any growth in bone marrow |
| Answer» It is the place where new blood cells are produced. Bone marrow contains two types of stem cells: hemopoietic (which can produce blood cells) and stromal (which can produce fat, cartilage and bone). ... The color of yellow marrow is due to the much higher number of fat cells. | |
| 63074. |
The cells themselves are made up of |
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Answer» Each cell in your body was made from an already existing cell. Smaller particles called molecules |
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| 63075. |
State any two funtion of each digestive gland |
| Answer» The major salivary glands, the parotid, submandibular and sublingual, are found as paired sets. Their ducts empty into the oral cavity. Their main function is to secrete saliva, which contains mucin, water and ions, as well as a few digestive enzymes, such as amylase and RNAse | |
| 63076. |
Name the si unit of potential difference and resistance |
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Answer» Potential difference Volt and resistance ohm the si unit of potential difference is volt and resistance is ohm Potential difference-voltResistance-ohm |
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| 63077. |
How image is formed in a plane mirror ? Explain briefly |
| Answer» Because the back side of mirror is covere with silver plate | |
| 63078. |
Which salts are used in totth paste |
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Answer» Aka table salt Basic salts are used |
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| 63079. |
What is the formula and SI unit of energy consumption? |
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Answer» Joule Energy=power×time and SI unit is joules |
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| 63080. |
Why non metals won\'t react with dilute acid?? |
| Answer» Because non metal cannot displace hydrogen gas from acids . | |
| 63081. |
Which are the important conducting tissue |
| Answer» In plants ,there are two types of conducting tissue, i.e, xylem for water and phloem for food. | |
| 63082. |
Why is the adrenal gland also known as the stress managing gland of the body? |
| Answer» Adrenal gland also known as the stress manging gland because they are theones to release adrenaline, when needed. We all know that adrenaline raises our stress level, and that boosts our short term memory, pain bearing ability, reflexes, analytical skills for a short while. | |
| 63083. |
Why our veins appear blue in coluor |
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Answer» Veins are blue in colour because they carries deoxygenated blood Blood is always red, actually. Veins look blue because light has to penetrate the skin to illuminate them, blue and red light (being of different wavelengths) penetrate with different degrees of success. ... The oxygen-rich blood is then pumped out to your body through your arteries. It\'s bright red at this point. |
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| 63084. |
Who discoverd cell |
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Answer» Robert hooke Robert Hooke |
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| 63085. |
explain working of nuclear reacter |
| Answer» \tThe heavy nucleus splits into two or more lighter nuclei, releasing kinetic energy, gamma radiation and free neutrons.\tThis thermal energy is used to boil water to produce pressurized steam, which will drive steam turbines to generate electricity.\tThis is the\xa0working\xa0of\xa0nuclear reactor. | |
| 63086. |
What is the difference between sensory nerve and motor nerve |
| Answer» A\xa0sensory nerve, also called an afferent\xa0nerve, is a\xa0nerve\xa0that carries\xa0sensoryinformation toward the central\xa0nervous\xa0system (CNS). It is a cable-like bundle of the afferent\xa0nerve\xa0fibers coming from\xa0sensory\xa0receptors in the peripheral\xa0nervoussystem (PNS).A\xa0motor nerve\xa0is a\xa0nerve\xa0located in the central\xa0nervous\xa0system (CNS), usually the spinal cord, that sends\xa0motor\xa0signals from the CNS to the muscles of the body.This is different from the\xa0motor\xa0neuron, which includes a cell body and branching of dendrites, while the\xa0nerve\xa0is made up of a bundle of axon\xa0Motor\xa0neurons\' axons are efferent\xa0nerve\xa0fibers that carry signals from the spinal cord to the effectors to produce effects | |
| 63087. |
Why alloys commanly used in electrical heating devices? Give reason |
| Answer» alloys are good conductor of heat and there melting point is high so , they cannot burn easily. therefore,they are used in heating appliances | |
| 63088. |
What is the difference between the artries and viens? |
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Answer» ARTERIES:1. Arteries are thick walled blood vessels.2. These carry oxygenated blood from heart to various parts of the body.VEINS:1. These are thin walled blood vessels.2. These carry deoxygenated blood from various parts of the body back to heart. Artries are thick blood vessels which carry pure blood and veins are thin blood vessels which carry dirty blood |
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| 63089. |
define oxidation and reduction on the basis of the reaction MNO2 +4 HCL=MnCl2 +2H2O+Cl2 |
| Answer» Isme Mn me reduction hua hai aur H me oxidation hota hai | |
| 63090. |
What is stomato |
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Answer» Tiny openings called\xa0stomata\xa0allow plants to exchange gases necessary for cellular processes, such as photosynthesis. The small pores present at the surface of leaves are called stomata Stomata are small pores present on surface of leaves used for exchange of gases and transpiration. |
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| 63091. |
What is endothermic reactions and exothermic reactions? |
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Answer» An endothermic is a reaction in which heat is absorbed and endothermic is a reaction in which heat is evolved out An\xa0endothermic reaction\xa0takes in energy from the surroundings.An exothermic reactions\xa0transfer energy to the surroundings. In endothermic reaction,energy is absorbed and in exothermic reactions,energy is released. |
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| 63092. |
State division law of current |
| Answer» | |
| 63093. |
Ph of salt solution |
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Answer» 7 7 7 Kbipn |
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| 63094. |
Mention the types of respiration with example |
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Answer» There are two types of respiration - aerobic respiration and anaerobic respiration . Eg in human being and fish There are 2 type of respiration 1. Aerobic Respiration * in this we take oxygen *2. Anaerobic Respiration * in this we take carbondioxide and other gas present around us it happen when we are doing exercise |
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| 63095. |
What is working of motor. &construction |
| Answer» When current carry armature is placed in magnetic field then it experience a force and rotate motor | |
| 63096. |
Define the term \'Electromagnet\' |
| Answer» Electromagnet is the magnet formed by magnetizing a piece of magnet in the strong magnetic field of solenoid | |
| 63097. |
Why hydrigen collects on cathode and oxygen collects on anode? |
| Answer» Hydrogen and oxygen gases are collected at cathode and anode respectively. As cathode is negatively charged so H+ (being positive) attract towards cathode and anode is positively charged so OH- (being negatively charged) attract towards anode. | |
| 63098. |
Prove the lens formula? |
| Answer» Any one online???? | |
| 63099. |
In which current is more ammeter or voltmeter |
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Answer» Volt meter because it is joined in parralel and in voltmeter current is equal to wire while ammeter is connected in series therefore it current is neglible Ammeter Voltmeter as it is joined in parallel Voltmeter why voltmeter??.. Ammeter |
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| 63100. |
What is the SI unit of resistor and how |
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Answer» SI unit of resistor is ohm meter Actually the question is wrong.Resistor is just another component of a circuit.The question should have been,"What are the units of resistance?"SI unit of resistance is ohm . |
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