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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.
| 6901. |
What is cell wall made up of |
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Answer» Cell wall is made up of cellulose All cell have cell membrane made up proteins and lipids |
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| 6902. |
What is the meaning of er |
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Answer» ER is stand for endoplasmic reticulum Endoplastic reticulum... Endoplasmic reticulum |
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| 6903. |
People sprinkle water on their rooftops in summers |
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| 6904. |
Why are we advised to wear seat belt while travelling in a car |
| Answer» We are advised to wear seat belt while travelling in a car because of security reason | |
| 6905. |
Why do people sprinkle water on the roof on a hot sunny day ? |
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Answer» Because for cooling Because water needs a large amount of heat to evaporate |
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| 6906. |
If an object have low mass then gravity effect change |
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| 6907. |
Which job have more salary |
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Answer» Army also Lawyer, bank manager, astronaut,navy, etc Strategy manager ,system architects....have more salary according to me.... |
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| 6908. |
What is displine |
| Answer» The practise of training someone to obey rules ir code of behaviour is known as disipline... | |
| 6909. |
Who is a mental? How they become like that? |
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Answer» You already mental . You need to go in mental hospital Lol You need not to become mental. You already is. But really you need to go in mental hospital Mental are peoplel ike u who waste time like thiss? |
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| 6910. |
Any matter is surround us is pure |
| Answer» Iron is a matter and is pure as it is found in earth and is natural and pure | |
| 6911. |
Ice at 0°c is more effective in cooling than water at 0°c. Why? |
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Answer» ice at 0°c absorb the latent heat of fusion ( it is that amount of heat which is required to convert 1 kg of substance from solid to liquid) from our hands.That is why ice at 0°c is more effective. At zero degree celsius water is solid also and liquid |
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| 6912. |
Name two Oraganelles we have studied that contain their own genetic material |
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Answer» Mitochondria and Plastids The cell organelles plastids and mitochondria have their own genetic material. Mitochondria and Plastids are the two organelles that contain their own genetic material/DNA & ribosomes. |
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| 6913. |
Why do solids hve less kineTic energY??●● |
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| 6914. |
Name any 10 solution,that commonly used at home |
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| 6915. |
Who was the Robert hooke and what did he work |
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Answer» Robert hooke was the founder of cell in 1665 he found the cell in the bark of tree called cork from his own hand microscope he saw honeycomb like structure called cell in Latin words Robert hooke he was a biologist and he found a cell in a bark of a tree in 1665.he observed the cell in a cork slice with the help of a primitive microscope....? He was founder of the cell He was founder of cell in the bark of treein the year 1665 Robert hooke is the main who discover cell in the bark of tree in the year 1665 for the first |
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| 6916. |
Define nucleoids |
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Answer» In prokaryotes , DNA ( being negatively charged) is held with some proteins (that have positive charges) in a region termed as "Nucleoid" Nucleoid is the undeveloped nucleus The nucleoid (meaning nucleus-like) is an irregularly shaped region within the cell of a prokaryote that contains all or most of the genetic material, called genophore.[1] In contrast to the nucleus of a eukaryotic cell, it is not surrounded by a nuclear membrane. The genome of prokaryotic organisms generally is a circular, double-stranded piece of DNA, of which multiple copies may exist at any time. The length of a genome widely varies, but generally is at least a few million base pairs. As in all cellular organisms, length of the DNA molecules of bacterial and archaeal chromosomes is very large compared to the dimensions of the cell, and the genomic DNA molecules must be compacted to fit |
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| 6917. |
What is latent heat of fusion and vaporisation |
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Answer» : Latent heat of fusion :it is an amount of heat energy required to change 1kg of solid into liquid at its melting point.: latent heat of vaporisation: it is the heat energy required to change 1kg of a liquid to gas at its atmospheric pressure at ots boiling point.. 1=Latent heat of fusion=Amount of heat required to any solid to change its state into liquid is called latent heat of fusion. 2= Latent heat of vapourization= Amount of heat required to any liquid to change its state into vapour is called laten heat of vapourization |
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| 6918. |
Why do we sprinkle on the roof on or open ground in summer? |
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Answer» We Sprinkle water on the roof because when we Sprinkle water it will get evaporated and it causes cooling For cooling our We sprinkle water on the roof or open ground in hot summers. This water requires latent heat of vaporisation to change from liquid state to vapor state. It evaporates or vaporises by taking the large amount of latent heat from the roof or ground and surrounding air. Hence, the roof or ground becomes cool after losing its heat to water. |
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| 6919. |
Why\xa0surgeon often sprays some ether on skin before performing minor surgery. |
| Answer» Ether is a volatile substance and to change from the liquid state to the vapor state, it requires latent heat of vaporisation. Ether takes up this heat of vaporisation from the portion of skin it is sprayed on. The energy lost by the particles from the affected area makes the area cool and leaves it numb i.e. the patient doesn\'t feel much of pain. | |
| 6920. |
Why ice is rubbed on burn part of our skin |
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Answer» It gives cooling affects Due to burning, the temperature of the injured skin increases.When ice is rubbed, the excess heat from the skin is taken by large latent heat of fusion of water.As a result, the temperature of the injured skin decreases and we feel less pain. |
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| 6921. |
What is a Kenatic energy? |
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Answer» The energy needed in change of matter is known as kinetic energy The movements of particles in a particular state is called kinetic energy of a substance Energy due to motion of particle is called Kinetic energy Kinetic energy is the energy possessed by a body by virtue of its motion. All moving bodies have kinetic energy. Kinetic energy is the energy possessed by a body by virtue of its motion. All moving bodies have kinetic energy. A body of mass m moving with a velocity v has a kinetic enegy E = ½ mv2. Note that kinetic energy is always positive.Alternately we can define K.E as follows.The work done by a body by virtue of its motion is called kinetic energy. it is the energy produced due to motion of particles.. |
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| 6922. |
Why uniform circular motion are also known as uniform accelerated motion |
| Answer» Uniform circular motion is accelerated because the velocity changes due to continuous change in the direction of motion. So, even when the body moves ta a constant speed, its velocity is not constant. Thus, for a body moving in a circular path at a constant speed, its velocity changes continuously. The change in velocity gives rise to an acceleration in the moving body. Therefore circular motion is an acceleration motion even when the speed remains constant. | |
| 6923. |
Major 5 differences between Kharif crop and rabi crop |
| Answer» \tKharif CropRabi CropSown at the beginning of the rainy season, i.e. between April and MaySown at the end of monsoon or at the begining of winter, i.e. between September and OctoberAlso known as monsoon cropsAlso known as winter or spring cropsAffected by rainfall patternNot affected by rainfall patternRequires hot weather and a large amount of water to growRequires warm climate for seed germination and cold climate to growThe harvesting month is between September-OctoberThe harvesting month is between March-AprilMaize, rice, cotton, groundnut are Kharif cropsPeas, wheat, gram and barley are rabi crops\t | |
| 6924. |
Exercises chapter 1 |
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Answer» ?????????? ❓ |
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| 6925. |
What are the syllabus of science class 9 |
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Answer» Every thing that you you have learned or not Hiii Full book |
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| 6926. |
What is Cell Division? Explain Briefly. |
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Answer» thanks for answering The cell divisions are of two types of mitosis and meiosis Cell divison is the process by which cell divide into to daughter cell. •mithosis and •meiosis What is matter The division of a cell into two daughter cells from the same genetic material is called cell division . There are two types of cell division: mitosis and meiosis . |
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| 6927. |
Tuberclosis effects on |
| Answer» Tuberculosis (T.B.) – T.B. is an infectious disease which is communicated from one person to another directly or indirectly. It is caused by bacterium called Mycobacterium tuberculosis. T.B. can affect all parts of the body such as lungs, lymph glands, bones, intestine etc. | |
| 6928. |
What is translocation? |
| Answer» Transport of soluble product of photosynthesis or food from leaves to other parts of plants is called translocation. For translocation, food molecules enter the part of the phloem called the sieve tubes where they can be transported upwards or downwards to all parts of the plant including roots. Translocation is achieved by utilizing energy from the ATP that provides osmotic pressure required for upward and downward movement of food. | |
| 6929. |
Write any four different between unicellular and multicellular organisms |
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Answer» Unicellular cell are made up of single cell are called unicellular second. Bacteria Amoeba Algae are the main group of unicellular III. These are mostly invisible to the eyes hence they are also referred as microscopic organism in multicellular organism are made up of more than one cell is called multicellular second. Animal Birds plants human being and main group of multicellular third. These are mostly visible to the naked eyes organism | \tThe body of the unicellular organism is composed of a single cell.The body of the multicellular organism is composed of numerous cells.Irregular in shape.Have definite shape.Simple body organization.Complex body organization.A single cell is responsible to carry the life processes.Different cells are specialized to perform different functions.The total cell body is exposed to the environment.Only the outer cells are exposed to the environment.Division of labour is at organelle level.Division of labour is at cellular, tissue, organs and organ system level.Includes both eukaryotes and prokaryotes.Includes only eukaryotes.\t The | |
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| 6930. |
What are LYSOSOMS❓ |
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Answer» When the cells are damaged lysosomes burst and digest their own cells \tThe sac-like structures in a cell surrounded by membrane are called lysosomes.\tThey keep the cells clean by digesting and breaking the outside materials like bacteria, food entering the cell or worn-out cell organelles into small pieces.\tThey can digest these organic materials due to the presence of strong digestive enzymes that can brreak down organic compounds. Therefore, lysosome is also known as a suicide sac. |
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| 6931. |
Why are lysosomes called sucide bags ? |
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Answer» Lysosomes are known as suicide bags because when the cells are damaged or rea because when the cells are damaged lysosomes bust and digest their own cell When pinocytic,phagocytic,prilysosomes,autophag vessicles are mixed up to be a secondary Lysosomes. It is hydrolised to form residuals body.It brust itself and protect cell.Also called Suicidal Bag When the cells got damage,the lysosomes digest their own cells.This results into death of the cell.Therefore lysosomes are called the suicidal bags |
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| 6932. |
What is rotaion of earth with proper defination?If earth rotates than why do we dont feel as moving |
| Answer» Ask to the earth | |
| 6933. |
Why did magnet only attract iron or other magnet Why not other metal like copper steel etc |
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| 6934. |
How many types of cell found in a human body |
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Answer» 7 There are seven types of cells found in human body :- 1.smooth muscle cell 2.blood cells 3. Nerve cell4.Ovum 5.Bone cell 6.Fat cell 7.sperm Two types |
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| 6935. |
Why did magnet only north to south attract, why its repell north to north and south to south? |
| Answer» Due two same poles its repell and due to different poles it attract | |
| 6936. |
Why boiling is a bulk phenomenon |
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Answer» Vtjklh??????? Because it is not a natural thing Yes boiling is a bulk phenomenon because it all together evaporates and evaporation is a surface phenomenon |
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| 6937. |
What is the difference between nucleus, nucleoid and nucleolus? |
| Answer» Nucleoid and nucleolus are part of nucleus | |
| 6938. |
What are osmosis |
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Answer» Osmosis is the passage of water from its higher concen. To its lower concen. through a selectively permeable membrane .In osmosis ,the solvent moves. Can also be defined as diffusion of water . The movement of matter from higher concentration to lower concentration by SPM The movement of water through a selectively permeable membrane is called osmosis |
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| 6939. |
Who was robert hooke |
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Answer» He was a scientist?who discovered the cell in 1665.He observed the cell at the bark of OKE TREE ?.He found a beehive like structure.But he saw ? dead ? cells.. Robert hook is a scientist who first discovered cell in 1665 who was first to discovere dead(cork) cell in 1665 Discover the cell Robert hooke was english scientist |
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| 6940. |
What role organisms play in :(1) carbon cycle (2) nitrogen cycle |
| Answer» \tThe Carbon Cycle:Carbon is an important constituent of organic compounds found in all living beings in the form of carbohydrates, fats, proteins and nucleic acids. Carbon is trapped in the surrounding air and water in the form of carbon dioxide. The consumers devour the organic carbon compounds that producers manufacture. Through respiration, both consumers and producers return carbon to the non-living environment in the form of carbon dioxide. Some carbon accumulates in wood for many years and is eventually returned to the atmosphere by fires or through consumption and respiration by fungi, bacteria and other detrivores.\xa0The utilisation of glucose to provide energy to living things involves the process of respiration in which oxygen may or may not be used to convert glucose back into carbon dioxide. This carbon dioxide then goes back into the atmosphere. Another process that adds to the carbon dioxide in the atmosphere is the process of combustion where fuels are burnt to provide energy for various needs like heating, cooking, transportation and industrial processes. Carbon is thus cycled repeatedly through different forms by the various physical and biological activities.\xa0\tThe Nitrogen Cycle:The continuous process by which nitrogen is exchanged between organisms and the environment is called nitrogen cycle. Nitrogen is an essential nutrient, needed to make amino acids and other important organic compounds, but most organisms cannot use free nitrogen, which is abundant as a gas in the atmosphere. The decomposers help in decomposing the dead bodies of plants and animals, and hence act as cleansing agents of environment. The decomposers also help in putting back the various elements of which the dead plants and animals were made, back into the soil, air and water for reuse by the producers like crop-plants, e.g. the decomposers like purifying bacteria and fungi decompose the dead plants and animal bodies into ammonia. This ammonia is converted into nitrates by nitrifying bacteria present in soil. These nitrates act as fertilizer in the soil and are again absorbed by the plants for their growth. Thus, the nitrates act as fertilizer in the biosphere so that the process of life may go on and on like an unending chain. | |
| 6941. |
a gas exerts pressure on the walls of the contain in which it is kept |
| Answer» Particles of gas move randomly in all direction at high speed. As a result the particle hit each other and also hit the walls of the container with a force. Therefore, the gas exerts pressure on the walls of the container | |
| 6942. |
What is hypnotic,isotonic,hypertonic solution? |
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Answer» Hypotonic solutions are the ones which have a lower concentration of solute than the cell. Water diffuses into the cell to balance the solute concentration on either side (outside and inside) equal. Here the cell swells up due to entry of water.Hypertonic solutions are the ones which have higher solute concentration than the cell. Water moves out of the cell through cell membrane to balance the concentration of the solute on either side. It results in cell shrinking .This may also lead to desiccation of the cell.Isotonic solutions have the same concentration of the solute as the cell. Water moves in and out of the cell with no net change.\xa0 These three are the solutions of osmosis process. In hypotonic solution the cell gain water. In isotonic solution the cell remain same and no changes were takes place. In hypertonic solution the cell losses water. |
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| 6943. |
Why ice at 273K more effective in cooling than water at the same temperature |
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Answer» Because the water at 273 k has latent while ive does not have it Ice is more effective han water at 273 K as it posseses the latent heat of fusion of ice. On turning to liquid ice will absorb this extra amount of heat from substance and cool it in the process. |
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| 6944. |
Give the expanded formof ATP molecules and explain it ? |
| Answer» Atp is adenoside triphosphate | |
| 6945. |
What happens when we keep rhoeo leaf in concentrated sugar solution |
| Answer» When Rheo leaves are boiled in water first and then a drop of sugar syrup is put on it, osmosis does not occurs, due to the death of the cells of the leaf. This shows that selective permeability is property of living plasma membrane. | |
| 6946. |
Physics notes chapter 8th motion |
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| 6947. |
Vactor quantity of MasssSpeedEnergyWorkForce |
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| 6948. |
Liquids generally have lower density than solids. But ice and wood floats on water. Why? |
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Answer» Ice in fact it is solid but it has cage like structure and hence its molecules have more empty space as compared to water so it has smaller density then water and hence floats on water. Because ice have 26% of space between them |
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| 6949. |
All substance around us are alike . How? |
| Answer» All the substances around us are similar because they all share one common property i.e. they are made up matter which is made up of very tiny particles called atoms. | |
| 6950. |
Science book activities |
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