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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.
| 42801. |
What is valency of carbon in alkane and alkene |
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| 42802. |
What r the limitaTions of modern periodic table |
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Answer» One could be the position if helium . it\'s place should be in group2 but it is in 18 No one find it ....!! Find urself and become scientise All perfect |
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| 42803. |
What is meant by modern periodic table? |
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Answer» The periodic table is a tabular arrangment of the chemical elements ordered by their atomic number , electron configruation and recurring chemical propertis Modern periodic table is new table given by. Neil Bohr according to increasing atomic mass. It helps us to arrange elements accordingly( chemical properties). It is grouped on the basis of increasing atomic number |
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| 42804. |
2 difference between calcination and roasting |
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Answer» \t Roasting Calcination One is heated in the presence of excess of oxygen or air.one is heated in the absence or limited supply of oxygen or airThis method is employed for sulphide ores.This method is employed for carbonate ores.Sulphur dioxide is produced along with metal oxide.Carbon dioxide is produced along with metal oxide. Example: For the ores ZnS (sphalerite) and Cu2S (chalcocite), balanced equations for the roasting are: 2ZnS+3O2-->2 Zno+ 2SO2 2 Cu2S + 3O2 → 2Cu2O + 2SO2 Example: ZnCO3--> ZnO+ C02 \t
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| 42805. |
Parts of flowers and its functions |
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| 42806. |
Why cannot we use a mixture of ethyne and air for welding |
| Answer» Because air has low amount of oxygen so using ethyne with air will produce soot | |
| 42807. |
A tarnished copper vessel is rubbed with lemon give reason |
| Answer» Lemon is acidic in Nature...in which basic layer is dissolved and washes off easily | |
| 42808. |
Reaction of photosynthesis? |
| Answer» In which form | |
| 42809. |
Explain how do muscle cells change their shape |
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| 42810. |
When soap is dissolved in alcohol will micelles form |
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Answer» No, soap will not work with alcohol, it\'s hydrophobic end will dissolve in it No |
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| 42811. |
Could we branch alkyl group on the 1st carbon atom of the chain?if no then why not? |
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| 42812. |
Which is highly reactive metal |
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Answer» potassium Potassium is highly reactive metal not Iron It is potassium sure Iron |
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| 42813. |
Name the reaction in which one of the reacting species loses electrons while other gains electrons. |
| Answer» Combination reaction, both elements forms ionic bonds | |
| 42814. |
How many types of eye defects are there and how can be rectify them |
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| 42815. |
Give 2 poinys of difference between vas deferens and fallopian tube |
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| 42816. |
Meaning of galvanistion |
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Answer» The process of coating iron particles with a thin layer of zinc The process of applying a coat of chrome metal on iron articles to prevent them from rusting. |
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| 42817. |
What is monohybrid cross?? |
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| 42818. |
Please ask her to come |
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| 42819. |
Thermal energy |
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| 42820. |
What is oxytocin and from where it is generated |
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| 42821. |
What is the importance of vegetative propagation? |
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Answer» It is a easy way to multiply plants in a short period of time. It us a mode of reproduction in which any vegetative part goes for reproducing like as stem leaf |
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| 42822. |
Are ohh Laila ?ka fan kaha Hai re aao fb pe nhi to insta pe |
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| 42823. |
How many chambers are required in heart to ensure double circulation |
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Answer» 4 4 4 |
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| 42824. |
When a cell reproduces , what happens to its dna |
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Answer» When cell reproduce DNA of parents are copying to the off spring Depends upon which type of reproduction |
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| 42825. |
Difference between micro evolution and macro evolution |
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Answer» Nutrient Micro means required in small amount and macro means required in lage amount Micro means small and macro means big substitute these?? |
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| 42826. |
Ok bye baby jaldi milange |
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| 42827. |
D/B micro evolution and macro evolution |
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| 42828. |
What is the outside raw material used by an organisms. |
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| 42829. |
Gd evng meri jaan (P) |
| Answer» Mere sapno ki rani kav ayegi tu | |
| 42830. |
Anyone is here who are ready and completed all subjects for board exam |
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| 42831. |
Kya koi mujhe GF ko manane ka tips dega |
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| 42832. |
Demerits Of Mendeeleev table? |
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Answer» He made atomic masses his base of classification.. Instead of atomic number.. *elements * instead Elemnta are arranged higher masses to lower instaeat of lower to higher Only 1 Isotopes were not correctly placed. |
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| 42833. |
In which room u can not go |
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| 42834. |
How many students in this app now doing study seriously ??? |
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| 42835. |
Why ideal fuel should have a proper ignition temperature? |
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Answer» So that it can not be burned easily. The ignition temperature of an ideal fuel should neither be too low nor too high. So easy ?? |
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| 42836. |
do electrons get created in static friction |
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| 42837. |
Explain why sour substance are effect I in cleaning copper vessel? |
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Answer» Copper reacts with moist carbon dioxide in air to form copper carbonate and as a result, copper vessel loses its shiny brown surface forming a green of copper carbonate. The citric acid present in lemon tamarind neutrilises the basis copper carbonate and dissolves the layer. That\'s why sour substance is used for cleaning cooper vessels. Because it contains acid and acid react with copper and and make the substance poisonous.. |
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| 42838. |
What happen when a girl feel sexual |
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| 42839. |
Merits and demerits of Mendeeleev table |
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Answer» M c a So easy ?? |
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| 42840. |
Danger signal are used as red colour ? Why |
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Answer» Thanks bolane ka jroorat nahi Hai ??? Thnx Danger signals are used as red colour because they have maximum wavelength so that it can a scatter maximum so it can easily reaches to our eyes because it a scatter maximum |
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| 42841. |
Oxygen liberated during the process of photosynthesis, comes from : |
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| 42842. |
How many carbon is present in Acetyl Co. A |
| Answer» It\'s a 0 carbon compound and it\'s an enzyme so it can\'t add carbon to the product | |
| 42843. |
A6ohms resistance wire is doubled up by folding.calculate the new resistance of the wire |
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Answer» 24 24 |
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| 42844. |
What is oxidation agent |
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Answer» The element which oxidises others and reduces itself is known as oxidising agent Is called oxidation agent.. ?? The substance which |
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| 42845. |
Why reproduction is known as "A bridge of hereditary transmission"? |
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| 42846. |
What are the factors responsible for the population explosion |
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Answer» So easy ?? Control nahi hona. .. sorry Urbanisation |
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| 42847. |
10 th k Baad kon konsi stream Lene wala hai.... |
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| 42848. |
Give any two ways in which non biodegradable substances would affect the environment . |
| Answer» They are not decomposed by microorganisms and hence cause pollution | |
| 42849. |
Define Food chain |
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Answer» Transfer of food energy from one organism to another in an ecosystem is known as food chain . Toh btao agr easy h toh Mr DJ So easy ?? |
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| 42850. |
Why is photosynthesis Considered an exothermic reaction |
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Answer» Question pucchne Wala Who is stupid my brother Stupid Kon se school me padhte ho |
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