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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.
| 52501. |
What is the end product of dark reaction? |
| Answer» Carbohydrate | |
| 52502. |
What is the meaning of inheritence |
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Answer» heritance means the similarity with u r parents and u Character that transfer one generation to another Hindi meaning = wirasatInheritance is the process of creating new classes called derived classes from existing classes or base classes |
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| 52503. |
The fluid medium of blood in which the cells are suspended is called |
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Answer» Plasma which is yellow in colour Plasma plasma Plasma |
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| 52504. |
I need last 2 question paper |
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Answer» Please go www.learncbse.com Please go to www.vedantu. Com cbse previous 2 years question paper |
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| 52505. |
Define Thermit Reaction? How thermit reaction is use in welding? |
| Answer» Thermite reaction :- It is the reduction of metal oxide to form metal , by using aluminium powder as a reducing agent. These reaction (metal oxide with aluminium) are highly exothermic(large amount of heat is released ). Due to the large amount of heat produced , the metals are produced in molten state.This reduction property of aluminium is used in welding broken pieces of heavy iron objects like railway tracks.Here is the chemical reaction that takes place,Fe₂O₃ + 2Al → 2Fe + Al₂O₃Here , molten iron is formed ,which is poured between the broken iron pieces to weld them. | |
| 52506. |
Please give my test papers of light reflection and refraction plzz I want it .it\'s emergency |
| Answer» | |
| 52507. |
Blood in lungs |
| Answer» Yes | |
| 52508. |
Last 5 year puestion paper |
| Answer» Go to the website (www.vedantu. Com cbse previous 5 years questions) please reply me | |
| 52509. |
What is Receptor |
| Answer» A cell or group of cell that receive stimuli | |
| 52510. |
When we said that the charge be quantized? |
| Answer» | |
| 52511. |
Why do atoms combine to form a material |
| Answer» | |
| 52512. |
4Na+O2>Na2O |
| Answer» 2Na2O | |
| 52513. |
Why food smellbad after some time |
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Answer» Because of Rancidity Because of rancidity Due to rancidity |
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| 52514. |
Use of Nahco3 |
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Answer» , NaHco3 is the chemical formula of baking powder and is usedbin bakeries |
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| 52515. |
The odour of SO2 gas is |
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Answer» Why Pungent and suffocating smell |
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| 52516. |
PbI2 is |
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Answer» Thanks Lead iodide Lead iodine |
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| 52517. |
Defination of pH |
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Answer» The concentration ions present in a solution are called pH scale...... The concentration of hydrogen ions are called pH .....pH is a universal indicator. |
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| 52518. |
Is cbse going to change half to full syllabus |
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Answer» It will be half but from next year...Ooo god?why not this year.... It has already changed syllabus is full and yes best of luck |
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| 52519. |
Difference between ethylene and auxins |
| Answer» Ethylene:\tEthylene helps in stimulating fruit ripening and determining the *** of a flower.\tEthylene is involved in the production of female flowers in a male plant.\tEthylene promotes Apo-geotropism in roots.\tEthylene helps in the root initiation of plants.\tEthylene increases the speed of senescence. Auxin:\tAuxin helps in cell enlargement by increasing the plasticity of the cell wall.\tAuxin helps in promoting the growth of the plant’s tissue.\tAuxin is responsible for the phototropism and geotropism.\tAuxin helps in promoting root initiation and stem cutting in plants.\tAuxin inhibits the growth of lateral bud by stimulating the production of ethylene.\tAuxin controls the aging and senescence of plants.\tAuxin helps in promoting the growth of many fruits without fertilization.\tAuxin helps in delaying the shedding of leaves | |
| 52520. |
If R is constant in equation V=RI, then why when R is doubled I gets halved ? |
| Answer» Yes because I is inversely proportional to R . I= v/r | |
| 52521. |
How tears form in our eyes and why it falls only when we get painful and emotional ? |
| Answer» | |
| 52522. |
What is the formula of carbondioxide |
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Answer» It is Co2 Co2 Co2 Co2 co2 CO2 note 2 should be written in small CO2 |
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| 52523. |
What is the difference between electric potential and potential difference? |
| Answer» An electric potential (also called the electric field potential, potential drop or the electrostatic potential) is the amount of work needed to move a unit positive charge from a reference point to a specific point inside the field without producing any acceleration.ON THE OTHER HANDPotential difference is the work done in moving a unit of positive electric charge from one point to another. ~half blood prince | |
| 52524. |
what do you mean by chemical equations |
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Answer» The symbolic representation of chemical reactions is called chemical equation Balanced equation is also called a chemical equation.. I am so sorry because my above defination is the defination of chemical reaction not for chemical equation. Chemical equation is the symbolic representation of a chemical reaction It is the process in which original substance lose their nature and identity and form new substance with different properties Go and complete ur 6,7,8,9 class again? ? |
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| 52525. |
A son of a doctor will become doctor only .do you agree with this statement? Justify your answer |
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Answer» It depends on the son\'s choice Can become or can\'t become May be or may not be yes no this is not compulsory its depend on son that what he want in life |
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| 52526. |
Why we not put copper sultphate in iron things |
| Answer» Because iron will displace the copper from its solution | |
| 52527. |
Object of height =4cmPlaced at distance=15cmConcave lens power= -10Find the size of image |
| Answer» | |
| 52528. |
CO2 is inorganic compound but its have a carbon atom how is it possible |
| Answer» | |
| 52529. |
What is the differnce between acids and base |
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Answer» 1) Acids are those chemical substances which have a sour tastes.2) Acid would release hydrogen ions(h+) when mixed with water.3) Acid turn blue litmus to red.4) Acid solutions conduct electricity(it means they are electrolytes).1) whereas, Bases are those chemical substances which have a bitter taste.2) Bases would release hydrogen ions (h-)when mixed with water.3) Bases turn red litmus to blue.4) Bases conduct electricity in solution (it means they are also electrolytes). Acid are sour in taste but base are bitter. Acid conduct electricity but base don\'t. |
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| 52530. |
what are the advantages of corrosion? |
| Answer» Advantages of corrosion:\t\xa0Surface corrosion forms an oxide layer. It acts as a barrier for air and moisture and thereby preventing the inner metal from corrosion.\tSome metals like zinc act as sacrificial anodes to prevent corrosion to other metals.\tGalvanic corrosion is the principle that is used in batteries. Here, two metals carbon and zinc are intentionally mixed together in a electrolyte solution where zinc corrodes faster in order to generate electrical charge. | |
| 52531. |
Name the component used in moter which enhance the power of it |
| Answer» | |
| 52532. |
Name the vestigil part of human alumentary canal |
| Answer» | |
| 52533. |
What is photsythesis |
| Answer» there is no term such as photosythesis,actually there is a word called photosynthesis,which is known as the preparation of food by plants on the behalf of sunlight,water,carbon di oxide,chlorophyll and other agents. | |
| 52534. |
What is fungi |
| Answer» It is type of organsim which do saprophte which eat on dead and deccan organsim | |
| 52535. |
How many layers in stomach ? |
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Answer» 3 layer 3 |
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| 52536. |
What is electri city |
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Answer» The flow of electrons in a conductor is called electricity The form of energy due to the product of charge is called electricity. The flow of charge in the conductors is called electricity |
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| 52537. |
How we can use voltmeter |
| Answer» We connect volmeter in parallel. | |
| 52538. |
Sexual reproduction of define |
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Answer» sexual reproduction is a mode of reproduction in which 2 parents are required and variation takes place.... ? |
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| 52539. |
When sodium chloride is in aqueous solution then it is known as |
| Answer» Brine | |
| 52540. |
Principal focus define |
| Answer» A number of rays parallel to the principal axis after reflection from a concave mirror meet at a point on the principal axis or appear to come from a point after reflection from a convex mirror on the principal axis. This is called principal focus. | |
| 52541. |
How sodium reduce metal from their oxide |
| Answer» | |
| 52542. |
What is exothermic and endothermic chemical reaction |
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Answer» The reaction in which heat energy is evolved is exothermic reaction whereas in endothermic reaction heat energy is absorbed. the reaction in which heat is released is called exothermic whereas the reaction in which heat is absorbed is called endothermic reaction |
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| 52543. |
Explain why ventricales are more muscular than Airtres of our heart |
| Answer» To resist pressure of the flow of blood from atria | |
| 52544. |
An electric heater is rated at 1500watt.calculate the heat produced per hour |
| Answer» Let the heat produced be x Then, Power = heat / time 1500 = heat /60*60 Heat = 1500 * 3600 = 5400000 j =5.6*10^6 | |
| 52545. |
Is ncert is enough for class 10ty science |
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Answer» no ncert is nt enough fr board xam based preparations All the questions will b asked from textbook only need not to purchase any guide. But textbook should b read deeply No ncert is good but for practice u must take Pearson book.Its best.... Yes. Ya i think it\'s enough Nooo ncert is best but you need side best book like Cordova , abc , s chand , etc . No |
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| 52546. |
How waves produced in sea |
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Answer» Due to gravitational force of moon. Saa |
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| 52547. |
Define morality |
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Answer» Your answer is wrong it is the term of chemistry. The number of children dying before the age of one year per 1000children is called infant mortality rate. |
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| 52548. |
What is the formula to obtain no. of image formed in a plane mirror? |
| Answer» | |
| 52549. |
Whta is osmoregulation |
| Answer» Maintaning water level | |
| 52550. |
Define polarity |
| Answer» signs + &- | |