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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.
| 57751. |
How does light reach the area where direct sunlight does not reach? |
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Answer» Due to reflection of light... It can reach by reflection By reflection |
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| 57752. |
Last year papers NCERT periodic test 1\'2\'3 |
| Answer» | |
| 57753. |
Difference between electric motor and generator |
| Answer» Electric motor converts electrical energy to mechanical energy while in a generator mechanical energy is converted to electrical energy | |
| 57754. |
What are the major types of plant hormones |
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Answer» And Abisis Acid Cytokinins gibberlines auxin are major plant harmones |
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| 57755. |
Why alloy have lower melting point than the constituent metals? |
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Answer» Because we already know that elements whenever react with other elements they usually lose their properties. This thing happens even with homogenous mixtures but in a low manner. So the homogeneous mixtures like alloy usually lose its properties ( not completey) of its constituting elements. And hence it shows low melting point For eg stainless steel has low melting point then its primary metal iron Brass has\tlower\tmelting point than its constituents. |
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| 57756. |
What is water cristallation |
| Answer» "water of crystallization" refers to water that is found in the crystalline framework of a metal complex or a salt, which is not directly bonded to the metal cation. | |
| 57757. |
What is plaster of paris?how it is prepared ?give its important uses? |
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Answer» Plaster of Paris or POP is CaSO4.1/2 H2O . It is prepared by heating gypsum at 373K or 100° C.reaction for it\'s preparation is as ...... CaSO4+2H2O------>CaSO4.1/2H2O+3/2H2O.. It\'s uses are as follows..• it is used for plastering fractured bones.• it is used for making caste of statues • for making black board chalks. Plaster of paris is generally known as POP. It is a white powder which is used for setting of bones and making toys. It is prepared from the gypsum |
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| 57758. |
What is tropic movement? Give two types |
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Answer» The growth of plant is permanent towards the stimulus is called tropic movement Ex..hydrotropism Thigmotropism Chemotropism Phototropism Geotropism The growth dependent movement of plant in response to its specific stimulus.It includes A) Phototropism and B) Chemotropism |
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| 57759. |
What happen when sodium chloride react with lead nitrate sol ^n |
| Answer» NaCl(aq) + Pb(NO3)2(aq) ——-> NaNO3(aq) + PbCl2(s)PbCl2 is precipitate | |
| 57760. |
What is atom and molecules |
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Answer» Atom is the smallest particle of an element and molecule is the group of atoms Every object in the world made up of atom and every atom is made up of molecules. |
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| 57761. |
Whar are organic acid and mineral acid with examples |
| Answer» Organic acids are those which contain carbon along with other functional groups. Like, CH3COOH or acetic acid or Ethanoic acid, is an organic acid as it contains carbon. Organic acid may contain other functional groups along with carboxylic group.Now mineral acids do not contains carbon. we can say that mineral acids are inorganic acid. examples are HCl , HNO3,H2SO4 etc | |
| 57762. |
What is the difference between petroleam gas and natural gas? |
| Answer» Petroleum gas\xa0is mainly and based (propane and butane), whilst\xa0natural gas\xa0is predominantly\xa0and (methane and ethane).\xa0Petroleum gas is generally produced via the cracking of naphtha, which is one of the components separated during crude oil refining.Natural gas is found, for example, in natural gas fields, and also in the form of shale gas. | |
| 57763. |
Which type of reproduction is more important either asexual or sexual and why? |
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Answer» Sexual reproduction is best mode of reproduction because it creates variation in offsprings making its survival better. Sexual reproduction is more essential as it leads to evolution. |
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| 57764. |
what is white hols |
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| 57765. |
What is the formula of citric and malaic acid |
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Answer» maleic acid- C4H4O4 Maleic acid. C4H4O4 Citric acid _ C6H8O7 |
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| 57766. |
Which is the glowing and big star of mikway galaxy |
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Answer» Sun ?? The sun |
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| 57767. |
Name the part in which urine is stored |
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Answer» Urinary bladder is correct answer and collecting duct is wrong one Urine is formed in the kidneys through a\xa0filtration\xa0of blood. The urine is then passed through the\xa0ureters\xa0to the\xa0bladder, where it is stored. During urination, the urine is passed from the\xa0bladder\xa0through the\xa0urethra\xa0to the outside of the body. Urine get collected in urinary bladder (for temporarly). Collecting Duct |
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| 57768. |
What are the causes of vomiting |
| Answer» Vomiting is caused when spinal cord is not working properpl.orWhen food is back flowed by stomach wall | |
| 57769. |
What is the work of heart |
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Answer» To transport blood and to purify the blood Heart is a pumping organ.It receives oxygenated blood from lungs and send it to all parts of the body .The ixygen from the blood is utilised by all parts of the body for performing various life processes of life.Note:-when tge blood goes into the lungs it is deoxygenated but the oxygen inhaled by us mixes with the blood from alveoli by diffusion and the carbon dioxide present in the blood diffuses into alveoli and bring back to the nose while it is exhaled. Pumping blood to the lungs to pure To transport blood to all parts of body |
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| 57770. |
Even carbon is present carbon dioxide is known as inorganic compound. Why? |
| Answer» Because organic molecules don\'t just contain carbon. They contain hydrocarbons or carbon bonded to hydrogen. The C-H bond has a lower bond energy than the carbon-oxygen bond in carbon dioxide, making carbon dioxide more stable/less reactive than the typical organic compound. | |
| 57771. |
How tears are formed in our eyes??? |
| Answer» tears are formed by lacrimal gland that sits in-between our eyeball and eyelid | |
| 57772. |
How is baking soda converted into baking powder |
| Answer» Baking soda is converted into baking powder by adding H+ ions or edible acid in it like tartaric acid. | |
| 57773. |
Explaion solenoid |
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Answer» Solenoid is a magnet which is made by curving coils around a cardboard or plastic cylinder .when current is passed through the coil ,the whole set up behaves like a magnet Tuj |
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| 57774. |
Explain solenoid |
| Answer» A solenoid is a coil consisting of many circular turns of insulated copper wire wrapped closely in the shape of cylinder | |
| 57775. |
which device used to detect the current |
| Answer» Galvanometer is the device used to detect the current. | |
| 57776. |
Plant harmones |
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Answer» Plant hormones are chemical secretions secreted by plant for its(plants) growth or ihhibit the growth .inhibits means stops or slows down. Auxin which helps in growth of plant |
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| 57777. |
Re check me science compartment paper |
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| 57778. |
Which gas is brown in colour , realized |
| Answer» NO2 | |
| 57779. |
What is the ions campound |
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Answer» Compound are those when atom lose or gain their ions then sparks formed by transferring or gaining of electron called compound The compounds which are made by transfer of electrons is known as ionic compound |
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| 57780. |
Define Dilution of acid and base |
| Answer» Acid which has 90% water or 10% acid | |
| 57781. |
How the ac current flows since its direction or polarity is continuously changing |
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| 57782. |
Maxwel all rule |
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| 57783. |
Define the term volt |
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Answer» Volt is the unit of potential difference . It is denoted by ‘V’ . 1 Volt means flowing of 1 ampere of current through a circuit under 1 ohm resistance. Volt is the unit of voltage...defined bh the letter \'V\' |
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| 57784. |
What is the full from of HO2 |
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Answer» Ho2 or H2O ? Hydrogen oxygen and valency2 |
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| 57785. |
What are the advantages of contraceptive devices? |
| Answer» These devices are used to avoid unwanted pregnancies.Through this, the overpopulation can be controlled | |
| 57786. |
Most ductile metal |
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Answer» gold is most ductile and least reactive metal. Gold |
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| 57787. |
tomorrow is my science exhibition so what to make |
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Answer» Model of a atom. Use a simple motor to make itnrevolve and thermacol ball for electron n proton hydrolic crane how to make go to Google ok? |
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| 57788. |
what is cartilage |
| Answer» Cartilage is a joint connective tissue. | |
| 57789. |
Hydra is an example of which reproductive part and why? |
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Answer» Budding Budding because in Hydra,a bud develops as an outgrowth due to repeated cell division at one specific site.These buds develop into tiny individuals and when fully mature,detach from the parent body and become new independent individuals. Regeneration .because hydra cut their body into new organism |
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| 57790. |
What is linkage and crossing over |
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| 57791. |
Why is the use of iodised salt adviasable |
| Answer» Because it help to thyroid gland to produce thyroxin hormones for maintaining protin ,fat and carbohydrate metabolism | |
| 57792. |
What is parabolic mirror???? |
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| 57793. |
Name the parameter required for the germination of seed |
| Answer» Water and soil | |
| 57794. |
What is the pH value of curd |
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Answer» 4.5 to 5.5 Between 4.5 to 5.5. |
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| 57795. |
Ccordination |
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Answer» Coordination means regulation by a group of organs.it means how one organ control the other organ. What u want to ask about coordination. Coordination |
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| 57796. |
What is corrosion with example |
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Answer» Rusting of iron in simple language jab kise metal ke material pe jang lag jata hai ushe corrosion khete hai Example - darnishing of silver Corrosion is the degradation of metals in the presence of atmospheric oxygen and moisture.EX -> Rusting of iron, it\'s equation is as follows ........... ......... ............. 4 Fe + 3O2 +xH2O----->2Fe2O3.xH2O. Slow and gradual distraction of reactive metals by atmosphric like CO2,O2,H2o etc; is called as corrosion.Eg: black coating on silver,green coating on copper and rusting of iron. Eg:Rusting of iron |
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| 57797. |
What is the reason behind tooth decay |
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Answer» ph level causes tooth decay . When we eat sugary food in excess amount then bacterias in our mouth secrete acid to break down sugar particles.If the ph value moves below 5.5 then it results into tooth decay. The reason behind the tooth decay is ph value .when we eat sugary substance the bacteria present in our mouth convert sugar into lactic acid .the acid present in our mouth lowers the ph of buccal cavity hence tooth decay starts |
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| 57798. |
What is the reason for the permanent hardness of water? |
| Answer» Because it contain magnesium and calcium ions | |
| 57799. |
why carbon cannot reduce the oxides of highly reactive metal |
| Answer» Because carbon has strong affinity towards highly reactive metals | |
| 57800. |
define induced current |
| Answer» When current is passed from changing conductor , some current is induced in it , this called induced current. | |