Saved Bookmarks
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.
| 55401. |
What a homologus series |
|
Answer» A series in which the same functional group substitutes for hydrogen in a carbon chain is called homologus series. In organic chemistry, a homologous series is a series of compounds with the same functional group and similar chemical properties in which the members of the series differ by the number of repeating units they contain. The presence of a functional group such as alcohol dictates the properties of carbon compound , regardless of the length of the carbon chain |
|
| 55402. |
What are the reasons for pollution of ganga |
| Answer» Because, ganga ek pavitra nadi mani jaati hai aur ye ek shradhaluo ka niwas hai | |
| 55403. |
Write Difference between symmetric and genetical traits by Mendel is famous |
| Answer» They nothing else then accquired and inherited traits | |
| 55404. |
Anybody from Ryan International here? |
| Answer» Noii | |
| 55405. |
State Newlands\'Law of Octaves |
| Answer» Newlands law of octaves state that first element\'s property is similar to the eight element as similar to sound of sangeet | |
| 55406. |
What is modern pereodic law |
| Answer» The chemical and physical properties of elements are the periodic functions of their atomic number and electronic configration | |
| 55407. |
An element X when dipped in copper sulphate solution changes its color. Find the element X |
|
Answer» Iron. Sulphate. Is. Formed. Which. Is. Light Green. In. Color Element is iron The element is iron |
|
| 55408. |
Why alloys are used in electrically heating devices rather than pure metals |
|
Answer» They have high melting pointThey have high resistanceThey dont undergo oxidation while heating Because they have high melting points than puremetals and they are also very good conductors of heat. Because alloys have high melting point rather than pure metals |
|
| 55409. |
How substance burn with flame and without flame |
| Answer» Hydrocarbon substance. | |
| 55410. |
What is relationship between acids, bases and salts? |
|
Answer» Acid +base gives salt and water Acid +base-----} Salt +Water Acid are sour in taste base are bitter in taste.Acid turns blue litmus red meanwhile base turn red litmus blueSome examples of acids are Hcl and sulphuric acid Some examples of bases are NAoh and Koh |
|
| 55411. |
How does spore formation occur |
| Answer» When spore case of flower burnt | |
| 55412. |
Define addition reaction,and give the reactions. |
| Answer» When two or more reactants combine to form a single product, then it is called addition reaction or combination reaction.For ex- CaO (s) + H2O (l)------------> Ca(OH)2 (aq) + Heat | |
| 55413. |
Why don\'t proton in a nucleus repel each other |
|
Answer» Proton ~ Neutron have different charge they do not repel each other. They have same element Becoz they have same element I mean same element Because they are of dame elemet |
|
| 55414. |
What was Mendeleev\'s contribution in periodic table? |
|
Answer» 1.Mendeleev\'s table was based on atomic number.2.Mendeleev left the spaces for the discovery of new element afterwards.3.Mendeleev table has no anomalies while Newlands table has anomalies. Herny moosle |
|
| 55415. |
Who discovered the modern periodic table ? |
| Answer» Herny moosle | |
| 55416. |
Rectified spirit is |
| Answer» Rectified spirit is the combination of 95%ethanol and 5%water | |
| 55417. |
Name the type of food chain |
| Answer» Grass~> Deer~> Tiger | |
| 55418. |
How many Types of food chain |
|
Answer» 2 2 |
|
| 55419. |
Name the element which we take on our palm and it is form of liquid |
|
Answer» Gallium and ceasium and dear Unnati acetone is not an element it is a compound Galiium and acetone mercury |
|
| 55420. |
Explain transport of water and food in plants |
| Answer» Xylem anx phloem | |
| 55421. |
Describe principle of motor |
| Answer» A current carrying cinductor placed in magnetic field , it exerts machenical force which can make to move conductor. | |
| 55422. |
General formula of cycloalkanes |
|
Answer» CnH2n+2 CnH2n |
|
| 55423. |
Difference between Acquired and Inhertited Traits |
|
Answer» Aquired traits:- the traits which are aquired by an organism in his life time.it cannot be passed on For eg- learning to swim,etcInherited traits:- the traits which are transferred from generations to generations. For eg-hair color,shape of nose,etc AQUIRED YRAIT : The trait which is "not inherited" but develope in response to environment.INHERITED TRAITS :The traits which develope through genes . Thanks Acquired traits are the traits which an individual acquire in his life time.And Inherited traits are those traits which passes from generation to generation in an individual. |
|
| 55424. |
Which law of mendel is also known as law of purity of gamates. |
|
Answer» Your answer - A gametes may carry either the dominant of recessive factor but not both as we find F1individuals. This is called either as principle of segregation as LAW OF PURItY OF GAMATEs .. Law of segregation |
|
| 55425. |
Which is the strongest bond single double or triple? |
|
Answer» Thankyewww? Single bond makes strongest or stable bond because it is saturated but triple bond is unsaturated so, single bond is strongest bond Single |
|
| 55426. |
What happens when ethanol is heated |
|
Answer» C2H5OH when heated it gives CH2=CH2 and H2O The combustion of ethanol is an exothermic reaction in addition to formation of new compounds the chemical reaction takes place to give CO2 water and heat It also releases an amount of 277.7 KJper mole of energy The combustion of ethanol is an exothermic reat |
|
| 55427. |
What do you mean by functional groups |
|
Answer» chlorine, florine, iodine, and bromine are called functional groups as they replace one Hydrogen atom. Group of atoms which make carbon compound reactive and decides it\'s property When an particaler family or group are react with a characteristic raction of particular compound. |
|
| 55428. |
Why we can see the sun about two minutes before the actually sunrise |
|
Answer» Due to atmospheric refraction Because of the atmospheric refraction |
|
| 55429. |
What is vacation |
| Answer» A full enjoyment time | |
| 55430. |
How we can identify that the positive or negative charge is produced? |
| Answer» Objects can be positively charged, negatively charged or neutral. A substance that gain electron is negatively charged, while a substance that losses electron is positively charged | |
| 55431. |
What are homologous and analogous genes |
|
Answer» HOMOLOGOUS ORGAN organs which have same basic structure but perform different functions are homologous organ.E.G. forelimbs of human and lizard...ANALOGOUS ORGAN organs which have different structure but perform same function r analogous organ..E.G. wings of bird and insect... It is not genes it is organs the homologous organs these are the organs that have same basic structural plan and origin but different function and the analogous are the organ that have different origin and strutral plane but same function |
|
| 55432. |
What are the differences between tropic movement and nastic movement? |
| Answer» In which case direction determine by stimuli whereas in nastie direction is not determined by stimuli | |
| 55433. |
Which. Type. Of. Lens. Is. Used. For. Presbiopia |
|
Answer» Bifocal lenses Convex lens is used to correct presbiopia A single lense in which both lense concave and convex lense are present is called bifocal lense Bifocal lens Both concave and convex lens Concave lens and Convex lens both are used |
|
| 55434. |
Name the device used to convert solar energy into heat and solar energy into electricity. |
| Answer» Solar cooker and solar cell respectivly | |
| 55435. |
How water is produced during combustion reaction? |
| Answer» Incomplete combustion will occur when there is not enough oxygen to allow the fuel to react completely to produced carbon dioxide and water | |
| 55436. |
A metal that gets covered with a protective film of its oxide |
|
Answer» Almunium Zinc |
|
| 55437. |
Pleez name the acid present in ant sting and bee sting |
|
Answer» Formic acid Methanoic acid Thanks Methanoic acid(formic acid) |
|
| 55438. |
MGNREGA 2005 guarantees |
|
Answer» Mahatma ghandhi national rural employment gurantelly act in 2005. It guaranted right to work if it unable to give work it give unemployment allowances It guaranted right to work |
|
| 55439. |
What a science |
| Answer» Scince is a type of subject which give knowledge about environment either it is visible or unvisible | |
| 55440. |
What is the easy way to learn valencies of elements????? |
|
Answer» Outermost shell of an electron is called valency electron.Ex- Sodium ki atomic no.-11 Na-11, Electronic calfragation of sodium Na -2,8,1 This valency is 1. You can learn the families of metalaEg,carbon family lithium family. |
|
| 55441. |
What are the advantages of tissue culture |
| Answer» The production of new plants from a small piece of plant tissue | |
| 55442. |
How carbon is present in food like pulse grain etc |
| Answer» | |
| 55443. |
What are ions? |
|
Answer» Charged partical present in electron Positively charged particles Charged particles |
|
| 55444. |
What is the real meaning of refractive indexxx?? |
|
Answer» Thnks harsh Thnks harsh Light rays pass in one medium to amother medium. Bending of light toward rarer to denser Bending. Of. Light. When. Light. Pass. From. Rarer. Medium. To. Denser. Medium. Or. Denser. To. Rarer |
|
| 55445. |
Define more about charge |
| Answer» | |
| 55446. |
What is hypermetropia and miopia can you give answer in simpel way |
| Answer» Both Myopia (short-sightedness) and Hypermetropia (long-sightedness) are common eye conditions that are occur when light does not focus on the retina of the eye. Both conditions are easily corrected using prescription glasses or contact lenses or in mild cases by laser eye surgery. | |
| 55447. |
What are the different between in the desert and sea region |
| Answer» | |
| 55448. |
Define power of Len\'s |
|
Answer» The ability of the lens to diverge or converge the rays falling on its surface is called power of lens Power of a lens is the reciprocal of its focal length.S.I. Unit = Dioptre ot DExample: A lens of focal length 10 cm then find its power?We know, P=100/f(in cm) or P=1/f(in m)So,P=100/10P=10 D. |
|
| 55449. |
What effect does concentration of h+ ions have on nature of solution |
|
Answer» The nature is then acidic the nature of solution is acidic due to the concentration of h + D |
|
| 55450. |
What happened when lead (PbNo3)2 nitrate reacts with potassium iodine solution??? |
|
Answer» 2Pb(no3)+2kl2=} 2pbl2+k(no3)2 Pb(NO3)2 +kI -----} PbI2 +K(No3)2 |
|