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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.
| 36851. |
Is burning of a candle, a physical change or a chemical change |
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Answer» It is a chemical change whereas melting of wax is physical change Chemical change |
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| 36852. |
Draw the structure of butanoic acid. |
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Answer» Thanks H H H H C- C-C-COOH OR CH3-CH2-CH2-COOH H H H |
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| 36853. |
Why alcahoal is used in cupcripes? |
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| 36854. |
Why carbon forms four bond |
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Answer» Because carbon is a tetravalent which has 4 atoms in his last shell Because it has four valency |
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| 36855. |
Difference between rancidity and calcenation |
| Answer» \tRancidityCalcination1. It is a condition in which the substance with oil and fats get oxidized when they are exposed to air.1. It is the conversion of metals into their oxides at high temperature in a limited supply of air.2. A substance is said to be rancid when there is a change in smell, taste, and colour.2. Carbonates, bicarbonate ores are subjected to calcination process.3. An example of rancidity is when a chips pack is exposed to atmospheric air which results in a change in taste and odour.3. Ex: ZnCO3 → ZnO + CO2.\t | |
| 36856. |
Write the main difference between nuclear fission and nuclear fusion. |
| Answer» \tNuclear FissionNuclear FusionWhen the nucleus of an atom splits into lighter nuclei through a nuclear reaction the process is termed nuclear fission.Nuclear fusion is a reaction through which two or more light nuclei collide with each other to form a heavier nucleus.When each atom split, a tremendous amount of energy is releasedThe energy released during nuclear fusion is several times greater than the energy released during nuclear fusion.Fission reactions do not occur in nature naturallyFusion reactions occur in stars and the sunLittle energy is needed to split an atom in a fission reactionHigh energy is needed to bring fuse two or more atoms together in a fusion reactionAtomic bomb works on the principle of nuclear fissionHydrogen bomb works on the principle of a nuclear fusion bomb.\t | |
| 36857. |
What do you mean by plant hormanes |
| Answer» Plant hormones are the chemical substance that promote the growth of a plant | |
| 36858. |
Who take our practical?schools or external examiner |
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| 36859. |
Give an example of stamen and carple in same flower? |
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| 36860. |
Give an example of stamen and carple |
| Answer» Hibiscus and mustard | |
| 36861. |
Define variation |
| Answer» No bio chemical is reliable so during copying of DNA some error occur these error leds to variation . | |
| 36862. |
Alia khan |
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| 36863. |
Who is the Tyndall? |
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Answer» The Tyndall effect, also known as Tyndall scattering, is the scattering of light by colloidal particles or particles in suspension. It is named after the 19th century scientist John Tyndall. It\'s an effect... |
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| 36864. |
Questions.why the sky is 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 tha sun at sunset we see red and arrange callous because the blue light has been scattered out and away from the line of sight. 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. During the day time sky appears blue.this is because the size of the particles in atmosphere is smaller than the wave length of visible light, so they are more effective in scattering the light of shorter wavelengths ( blue end of spectrum) |
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| 36865. |
Heena hi,,,,,, Answer.The scattering of light by particle in its path is called Tyndall effect. |
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| 36866. |
What is kime |
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| 36867. |
What is tndoll effect? |
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| 36868. |
Why CDs reflect a rainbow colour |
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Answer» CD acts as a diffraction grating(diffraction – change in direction and intensities of waves after passing through a narrow slits or edges). We know that diffraction gratings are dispersive i.e. they separate a polychromatic light into its constituents. Thus rainbow colours are formed. CD also acts like aprism |
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| 36869. |
What r the observation when we trace the path of light through the glass prism..... |
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Answer» The sequence of light is V - violetI - indigo B - blue G - greenY-yellowO-orange R-red The white light splits in to 7 colours |
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| 36870. |
How does fuse wire protect electrical appliances? |
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Answer» As fuse wire are made up of elements which have low melting point as huge amount of current pass through it it generates heat and beacause of this it melt and break the circuit Fusing during overloading and breaking the circuit ,fuse wire protects electrical appliances. |
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| 36871. |
What is the other name of food pipe |
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Answer» Osophegus Oesophagus |
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| 36872. |
Which acid is present in stomach |
| Answer» Hcl | |
| 36873. |
When washing powder is exposed in air |
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| 36874. |
What is double circulation in human being? |
| Answer» Double circulation is the flow of deoxygenated blood from body to heart to lungs and oxygenated blood from lungs to heart to all parts of body. | |
| 36875. |
What is dna. |
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| 36876. |
What is watershed management ? What is its aim and also write 5 advantage of watershed management . |
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| 36877. |
What is parthenogenesis? |
| Answer» reproduction from an ovum without fertilization, especially as a normal process in some invertebrates and lower plants | |
| 36878. |
How to write nomenclature |
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| 36879. |
Name two ancient of water harvesting in Maharashtra |
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| 36880. |
Difference between fragmentation and regeneration. |
| Answer» In fragmentation organism divide itself into parts when it get mature while in regeneration organism cut into parts accidentally | |
| 36881. |
Three possible reasons of short circuiting of an electrical circuit.....??? |
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| 36882. |
Why had mendal choose the pea plant in his experiment |
| Answer» In a large scale there is much veriasion in a pea plant . Its cultivation doesn\'t needs more attention | |
| 36883. |
Example who can not donet eye |
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Answer» Person having hyperptropia ,miyopia ,pressmyopia and any other difect in eye or in health can not donate their eye I |
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| 36884. |
Why plenats are not Thanksgiving |
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| 36885. |
What is the role of fine hair of nostril and muscus y |
| Answer» Role of fine hair in nostril is to clean the air which is enter into nostril. | |
| 36886. |
What is the role decomposers in the ecosystem. |
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| 36887. |
What is Tetravalency. |
| Answer» Tetravalency is the state of an atom in which there are four electrons available with the atom for covalent chemical bonding. For example, in methane (CH4), the tetravalent carbon atom forms a covalent bond with four hydrogen atoms. | |
| 36888. |
Concave lens and concave mirror have same property or not |
| Answer» No concave mirror and convex lens are having same property | |
| 36889. |
What lens use myopia |
| Answer» Concave lens | |
| 36890. |
What is law of segregation |
| Answer» The principle, originated by Gregor Mendel, stating that during the production of gametes the two copies of each hereditary factor segregate so that offspring acquire one factor from each parent. | |
| 36891. |
Which type of compound show substitution reaction? |
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| 36892. |
Who make the modern periodic table? |
| Answer» mendleev and Bohr | |
| 36893. |
Why do we add Baking soda in milk |
| Answer» To avoid acidification | |
| 36894. |
Class me sabse sexy hai najar hi nai hathti usa dekhta reheta hu...........socha hu purpose kar du |
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| 36895. |
board ke paper ke liya best book study ke liya kon kon si hai |
| Answer» Ncert | |
| 36896. |
Why stars Twilight |
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| 36897. |
Define image |
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| 36898. |
How planet revolve |
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| 36899. |
acid formula |
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| 36900. |
Dot diagram of Nacl & mgcl2 |
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