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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.
| 5401. |
W what is acceleration motion |
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Answer» It is defined as rate of change of velocity with respect to time The rate of change of velocity is known as acceleration.It\'s SI unit is m\\sec2\xa0.acceleration = final velocity - initial velocity\' time taken The rate of change of Velocity of an object with respect time |
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| 5402. |
Oxygen molecule mean o or o2 |
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Answer» Molecule is formed by combining two or more similar atoms. So O2 is molecule, O3 is ozone molecule. Its actually o2 but in some chemical reactions it is referred as o O O2 |
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| 5403. |
What is machanical energy |
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Answer» Mechanical energy is the defined as the total number of kinetic energy and potential energy is called mechanical energy The sum of kinetic and potential energy is called mechanical energy Mechanical energy is the energy that is linked with the motion of an object. This energy is usually stored in an object so that it can enable it do work once force is applied to it.ORMechanical energy is a kind of energy created by the physical movement or rotation, revolution etc of anything.Since most of the movements done and energy created are done by machines, it is named as mechanical energy. |
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| 5404. |
Rutherford\'s model of drawback |
| Answer» Rutherford\'s model could not explain the stability of an atom.If electrons moves around the nucleus as described by him, they would very quickly lose their energy and fall in to the nucleus and the atom would collapse.Note: Electron moving in circular path gains acceleration and radiate energy and at last dash the nucleus. | |
| 5405. |
Explain the effect of antibiotic penicillin on bacterial cells |
| Answer» Taxonomically, all bacteria are closely related to each other than to viruses and vice versa. This means that many important life processes are similar in the bacteria group but are not shared with the virus group. As a result, drugs that block one of these life processes in one member of the group is likely to be effective against many other members of the group. But the same drug will not work against a microbe belonging to a different group. As an example, let us take antibiotics. They commonly block biochemical pathways important for bacteria. Many bacteria, for example, make a cell-wall to protect them. The antibiotic penicillin blocks the bacterial processes that build the cell wall. As a result, the growing bacteria become unable to make cell-walls, and die easily. | |
| 5406. |
On 4 December my physics seminare chapter 12 sound topic will be range of hearing explain this topic |
| Answer» There are two range that humsn can hear:Infrasonic Sound (0 - 20) hertzUltrasonic Sound (20 - 2000) hertz | |
| 5407. |
Why mitochondria is called power hose of cell |
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Answer» Mitochondria called powerhouse of the cell because he generate energy to use their life process in the form of DNA so it is called powerhouse of the cell Mitochondria are tiny organelles inside cells that are involved in releasing energy from food. This process is known as cellular respiration. It is for this reason that mitochondria are often referred to as the powerhouses of the cell. Mitochondria is called power house of cell because the energy which is required to do all the activities which is realiesed by mitochondria in the form of (APT) Because it provide energy and supply food and water and minerals to cell |
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| 5408. |
What is j.j.thomson model of the atom ? |
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Answer» JJ Thomson model first proposed that an atom consists of the positively charged sphere and and electrons are embedded in its second if the positive the positive and negative charge are equal in magnitude so atom as a time is a wall electrically neutral JJ Thomson Atomic model is like watermelon, in which the red part is positively charged(proton) and the seeds embedded in it are electrons (negatively charged). It is also called as plum pudding model. |
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| 5409. |
Who discovered positive (anode) rays ? |
| Answer» In 1886 Goldstein | |
| 5410. |
Give five Kingdom concept |
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Answer» Monera,Protista,Fungi,Plantae,Animalia. R.H. Whittaker (1969) proposed a Five Kingdom Classification-Monera, Protista, Fungi, Plantae, and Animalia Kingdoms.It is classified based on cell type, cell wall, nuclear membrane, modes of nutrition and body-organization. |
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| 5411. |
What is the ratio of average speed and average velocity when the motion is in the straight line path |
| Answer» 1:1 is the ratio of average speed and average velocity when the motion in straight line path | |
| 5412. |
What is biotic factors |
| Answer» Biotic factors or components are mainly referred to all the living things in the ecosystem. Their presence or their materials affect the composition of an ecosystem. These materials include organisms, interactions, parts, wastes and also their presence. Factors like disease, predation, and parasitism can also be considered as biotic. | |
| 5413. |
What is rhizobium |
| Answer» Rhizobium (plural: Rhizobia) is the nitrogen fixing bacteria present mainly in the soil. The Rhizobia chemically convert the nitrogen from the air to make it available for the plant.These bacteria live in symbiotic relationship with leguminous plants. The Rhizobia live in nodules in the roots of the plant. These bacteria convert atmospheric nitrogen to nitrates and nitrites which can be used by the plants directly. Nitrogen fertilizers are not required. | |
| 5414. |
When do we say that work is done |
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Answer» When we say work is done following points first the force act on an object second the object will displaced 1m long. So we say work is done Work is said to be done if some force is applied and displacement is produced due to that force,if the angle between the direction of force applied and direction and direction of displacement produced is not right angle.... We say it when a force is applied on an object which gets displaced with the effect of force exerted.therefore W=F×D Work is said to be done by a force acting on the object when the object is displaced along the direction of force. For example,(i) A girl pulls a trolley and the trolley moves through a distance. The girl has exerted a force on the trolley and it is displaced along the direction of force. Therefore, work is done.(ii) Lift a book through a height. To do this, you must apply a force. The book rises up. There is a force applied on the book and the book has moved up in the direction of force. Hence, work is done.Thus, following two conditions need to be satisfied for work to be done:(i) a force should act on an object, and(ii) the object must be displaced along the direction of force. |
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| 5415. |
Diffrence between longitudinal wave and transverse wsve |
| Answer» \tLongitudinal WaveTransverse WaveThe movement of the medium is of the same direction of the waveThe movement of the medium is perpendicular to the direction of waveIt acts in one dimensionIt acts in two dimensionThe wave cannot be polarized or alignedThe wave can be polarized or alignedThis wave can be produced in any medium such as gas, liquid or solidThis wave can be produced in solid and liquid’s surfaceEarthquake P wave is an exampleEarthquake S wave is an exampleIt is made of refractions and compressionsIt is made of troughs and crests\t | |
| 5416. |
Of the organisms that perform photosynthesis, what is the level of organisation of their body? |
| Answer» | |
| 5417. |
Law of floatation |
| Answer» La, law of floatation states that a body float if the Dalai Lama you find the answer by yourself | |
| 5418. |
What is endocytocis |
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Answer» It is the flexibility of cell wall to engulf the food. Ex in amoeba Endocytosis is a cellular process in which substances are brought into the cell.The material to be internalized surrounded by an area of Plasma membrane with then buds of inside the cell to form a vesicle containing the ingested material endocytosis include pinocytosis and phagocytosis the taking in of matter by a living cell by invagination of its membrane to form a vacuole. |
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| 5419. |
Define Sound. |
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Answer» So as as as as as as as as as asThis is the sound In physics, sound is a vibration that typically propagates as an audible wave of pressure, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain |
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| 5420. |
An object is dropped from a certain height, what is the distance travelled by it in 4th second ? |
| Answer» | |
| 5421. |
What is isotones |
| Answer» Two nuclides are isotones if they have the same neutron number N, but different proton number Z. For example, boron-12 and carbon-13 nuclei both contain 7 neutrons, and so are isotones. Similarly, ³⁶S, ³⁷Cl, ³⁸Ar, ³⁹K, and ⁴⁰Ca nuclei are all isotones of 20 because they all contain 20 neutrons. | |
| 5422. |
What is the nature of sound in air |
| Answer» | |
| 5423. |
When we say work is not done but force acting on a object to produce displesement ? |
| Answer» When the angle between the force and displacement is 90 degree than we can say work is not done | |
| 5424. |
What is water logging |
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Answer» ? It refers to the situation of soil with water. Soil may be regarded as waterlogged when it is nearly saturated with water much of the time such that its air phase is restricted and anaerobic condition prevails in extreme cases of prolonged waterlogging anaerobiosis occurs the roots mesophyte suffer and the subsurface reducing atmosphere leads to process as denitrification, methanogenesis and the reduction of iron and manganese oxide |
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| 5425. |
Why gas has maximum compressibility |
| Answer» Has it has more space between the particles.which helps in easy compressibility | |
| 5426. |
Element X has 5 electrons in its M shell what is the atomic number? |
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Answer» 15 15 15 |
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| 5427. |
Why Isotope element have different physical properties? |
| Answer» Yes | |
| 5428. |
Which subatomic particle are not present in the hydrogen atom? |
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Answer» Write Neutron I dont no |
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| 5429. |
What is the other name of potential energy? |
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Answer» Mechanical energy PE=mgh |
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| 5430. |
What is the derivation of potential and conservative energy |
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| 5431. |
Why there is abundant of nitrogen gas present in earth\'s atmosphere? |
| Answer» | |
| 5432. |
What are the type of plant nutrition.? |
| Answer» Autotrophic and heterotrophic | |
| 5433. |
how much work must be done to stop a 1000 kg car travelling at 100 km/h |
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Answer» 500/18 as to change speed in si units... Work done = kinetic energy.....i.e 1/2m.v.v=1/2×1000kg×[500/18]^2=385802.5(approx.) sorry bt your ans is wrong 10 |
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| 5434. |
how kinetic energy and momentum related |
| Answer» Momentum and K.Eare related by the mass and speed/velocity of the object... | |
| 5435. |
Who came frist egg or hen |
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Answer» Of course hen,cause egg can only be laid after fertilization of male and female gametes of hen and ****....and it is not possible for a chick to come out of a crocodile egg or frog egg..... Why Hen |
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| 5436. |
Give an example of mollusca phylum |
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Answer» CHiton Octupas Octopus Octopus |
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| 5437. |
Which website is best for wOrksheets class 9 science chapterwise {PLS SAY THE NAME OF THE WEBSITE} |
| Answer» | |
| 5438. |
Example11.2 |
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Answer» You don\'t be so lazy to write the full question Search ncert solutions expalination in google |
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| 5439. |
From where do we get best worksheet for science chapterwise. |
| Answer» U can refer various websites in d net.. | |
| 5440. |
after the rusting of an object the weight of the object increases how? |
| Answer» Rust is nothing but an oxide form of iron..this when the rust forms above the iron object ...the mass of O2 is added on with the mass of iron..and thats why...weight of the object is increased.. | |
| 5441. |
Why do we get when two or more elements are combined ? |
| Answer» Compound | |
| 5442. |
Give five examples of careers disease |
| Answer» Chickenpox and TB | |
| 5443. |
What are chemical formulaes ? |
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Answer» it is symbolic represtation of atom Chemical formulas are the shortest way to representing the symbolic form of an atom |
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| 5444. |
what is the S.I unit of relative densitt |
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Answer» Relative density of a substance = Density of the substance/Density of water at 4°C As relative density is the ratio of densities, it has no units. (Both the numerator and the denominator have the same units, they cancel each other. ) Relative density does not SI unit |
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| 5445. |
two aresof study namely evolution and classification are interlinked .justify |
| Answer» | |
| 5446. |
AIDS virus has-------- genetic material |
| Answer» No | |
| 5447. |
What will be the molecular formula for Calcium Hydroxide |
| Answer» Calcium Hydroxide Ca. OH 2+ 1- Formula Ca(OH)2 | |
| 5448. |
Why any object sink in salt water not in fresh water ? |
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Answer» Salt water has greater density then fresh water The dissolved salt increases the mass of the water without increasing its volume, so salt water is generally denser than fresh water. This means the buoyant force on a submerged or partially submerged object is greater in salt water than in fresh water. In other words, it\'s easier to float in salt water than in fresh water (or, you sink faster in fresh water than in salt water). |
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| 5449. |
Wkich organelle is known as traffic police of the cell and why |
| Answer» Golgi body is called the traffic police of cell because it acts as a way station or a assembly area for the storage ,processing and packaging for various cellular secretions. It also packages material synthesised by cell and dispatch them either to intracellular or extra cellular targets such as zymogens.\xa0 | |
| 5450. |
Coal: __________: : Coke : porous |
| Answer» Coal::soft | |