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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.
| 41551. |
Why is there need to harness non conventional sources of energy ? Give two main reason |
| Answer» 1. Non conventional resources does not cause pollution.2. Conventional resources are exhausting | |
| 41552. |
Write the aquatic organisms in order of who eats whom and form a chain of at least three steps |
| Answer» | |
| 41553. |
What do you mean by allotrope of carbon. |
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Answer» Like diamond graphite and buckminsterfullerene These are the elements which show same chemical properties as that of carbon Compounds made by carbon |
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| 41554. |
Why are fossils considerd important in the study of evolution ?two ways writes |
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| 41555. |
Mechanism of ozone |
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Answer» Ozone protects earth from harmful ultraviolet rays of sun, O+O2=o3 |
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| 41556. |
Parallel combined |
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| 41557. |
What is the place of hydrogen in modern periodic table |
| Answer» Hydrogen is placed in period 1 because it gives 1 electron but it is not placed with metals | |
| 41558. |
Calcium is an element with atomic number 20 |
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Answer» Ya is it a q.? is this question or answer |
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| 41559. |
Name the substance hoes 14% solution is used to preserve dead animals as biologist specmient |
| Answer» Formyaldhyde | |
| 41560. |
How to make afuel best |
| Answer» | |
| 41561. |
Why is nuclear fusion more difficult to initiate than nuclear fission? |
| Answer» ask Kim Jong | |
| 41562. |
What are coinage metals??? |
| Answer» | |
| 41563. |
Structural formula for pentanoic acid? |
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Answer» Write 5 single bond c \' s then on the last c at the top is double bond "o" n to its right is single bond "oh" then rest othe carbons u put the h bond except 4 the last carbon be cuz 4 bonds r over CH3-Ch2-CH2-CH2-COOH |
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| 41564. |
What is meant by mineral?? |
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Answer» Homogenous naturally occurring substance with a definable internal structure and also dispensable part of life Elements or compound whic we get naturally in earth crust a solid, naturally occurring inorganic substance. |
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| 41565. |
A food chain always starts with |
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Answer» Autorophs* Autotophs. .....producer such as grass. Autotrophs |
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| 41566. |
What is phenophthalein & it is used for? |
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Answer» It is a synthetic indicator use to check presence of acid or base in a substance. It is one of the indicator use to check the preacence of acid and base in the substance |
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| 41567. |
How the berkdown of glucose dose take place in the living cell ? Explain the different Mather |
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| 41568. |
What is metall ? |
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Answer» It\'s property a solid material which is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity (e.g. iron, gold, silver, and aluminium, and alloys such as steel). Metal is a malleable and ductile substance |
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| 41569. |
How to calculate the age foss |
| Answer» More closer to surface fossil is more recent and by carbon dating method | |
| 41570. |
Watershed management |
| Answer» Scientific conservation of soil and water | |
| 41571. |
What ar fossil? Give it\'s impact |
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Answer» These are remains or impression of dead organism along long years ago. It is useful for study of evolution and speciation Fossils are traces of ancient life. For many people the word “fossil” probably conjures an image of a bit of hardened bone or shell, but fossils can take many forms. An imprint of a leaf, an insect preserved in amber or a footprint are all examples of different types of fossils. Scientists use fossils to gather information about the lives and evolutionary relationships of organisms, for understanding geological change and even for locating fossil fuel reserves.Fossils aren’t used only to understand individual organisms. Geologists also use fossils for what’s called biostratigraphic correlation, which allows researchers to match layers of rock in different locations by age based on how similar the fossils in each rock layer are. This information can be used to help understand when different layers of rock were formed even when large distances separate them Dead remains of plants and animals Fossils are impressions of animals and plants lived remote past.they help in evlution of species This is fuel |
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| 41572. |
Please explain Precipitation reaction |
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Answer» In a reaction reactant react in insoluble and seperates out to form precipitate is known as precipitation reaction...Eg.AgNO3 + NaCl 》》》》》AgCI + NaNO3 Reaction in which a precipitate is formed which is insoluble in water is called precipitation reactions. |
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| 41573. |
What\'s the difference between fragmentation and regeneration |
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Answer» what\'s your name When organism Spirogyra mature it divides into fragments and each fragments develop in new individuals. ?regeneration is process happened when organism is accidently cut . Regeneration is not overall reproduction. See ncert |
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| 41574. |
derive lens formula |
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Answer» In CBSE syllabus it is mentioned that derivation is not required. See syllabus. Not possible here Derivation yha or kese kre.. |
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| 41575. |
Why alcohols have higher boiling point as compared to hydrocarbons? |
| Answer» | |
| 41576. |
formula of ethylene glycol? |
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Answer» google is very important tool ?? Out of CBSE NCERT syllabus. C2H6O2 ?? |
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| 41577. |
An element m with electronic confignation 2,8,2 combin |
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Answer» Mg magnesium Magnesium |
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| 41578. |
What is the molecular formula of benzene? |
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Answer» C6H6 C6H6 |
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| 41579. |
Why wet clothes seem dark? |
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Answer» Because less light reflected from wet clothes .Hope it\'s helpful .. No idea. I never tried it |
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| 41580. |
What is difference between magnetic north or geographical north? |
| Answer» They are opposite to each other | |
| 41581. |
Who first studied that electricity can be generated from magnetic and when? |
| Answer» glenn maxwell | |
| 41582. |
Why the pin plug of earth wire is thick? |
| Answer» The Earth pin is made bigger because, The earth pin on a plug is longer than the live and neutral pins. This means the earth pin is the first to connect and the last to disconnect. When inserting the plug, the earth connection is made before the current carrying contacts of the plug become live. | |
| 41583. |
What is overloading and short circuit? |
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Answer» When the need of current is more than current flowing in circuit is overloading or when too many appliances is connected in single circuit than the overloading is happen. When live wire get touch with neutral wire due to insulation failure is called short circuit The circuit is said to have overloaded when more than the desirable load is applied to the circuit. The overload occurs because of the malfunctioning of the equipment or faulty circuits. Whereas the short-circuit condition occurs when the metal wires come in contact with each other or because of insulation failures. |
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| 41584. |
What gappe when BaCl2 react with Na2SO4 |
| Answer» NaCl +BaSO4 forms | |
| 41585. |
Is anyone is free there |
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Answer» Ya I m Hello miss sakshi Iam so bored Yes |
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| 41586. |
Define term conservation of environment |
| Answer» | |
| 41587. |
Explain sexual reproduction in flower |
| Answer» See in NCERT | |
| 41588. |
What do you know about DNA and also about blue print copies |
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Answer» I know it is in NCert but give me your views on this It is in Ncert. |
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| 41589. |
Why sky appear blue |
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Answer» A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight. Apko mera answer right lga kya pls answer me Due to atmospheric refraction of light Due to dispersion of light By scattereing of light |
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| 41590. |
why sky appear blue give reason |
| Answer» Because of the atmospheric refraction, blue colour of the sky is on account of light of shorter wavelength by particles in the atmosphere of the earth | |
| 41591. |
What is lichens |
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Answer» Lichens belongs to Kingdom thallophyta .it\'s colour is purple. It is for making acid Base indicators and it is sensitive to air pollution. Lichens are species of plants from which litmus is extracted |
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| 41592. |
How we can use thumb rule and flemming rule |
| Answer» In right hand thumb rule ,thumb points towards direction of current and the direction in which 4 fingers curled is direction of magnetic field.See videos on YouTube | |
| 41593. |
What Is Meant by Molecular Number? |
| Answer» | |
| 41594. |
Please help me friends..i am unable to do the chapter ELECTRICITY........how should i do it |
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Answer» I am facing the same problem here Watch video on this app Yes follow NCERT and topics u can\'t understand go through lakhmir Singh( S Chand) for better understanding Follow NCERT which is the best |
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| 41595. |
Name phenomenon by which exchange of gases occur between plant body and temperature |
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Answer» Though stomata Transpirationan |
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| 41596. |
Name the physical phenomenon by which exchange of gases occur between plant body and atmosphere |
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Answer» What is the right answer Respiration Diffusion Transpiration |
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| 41597. |
What is function of petal and sepals? |
| Answer» They r nonreproductive part of plants.....petal is coloured part to attract insect forpollination....and sepal provide protection to plant | |
| 41598. |
Which component of food does not digest in stomach |
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Answer» Also fat Cellulose |
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| 41599. |
Concopt basis |
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| 41600. |
What is the colour of magnese |
| Answer» It has many colours. But mostly pale pink | |