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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.
| 39001. |
what is double bond |
| Answer» Sharing of two e b\\ w two atoms | |
| 39002. |
What is density |
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Answer» Mass per unit volume of a substance is known as density Mass pre unit volume |
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| 39003. |
What is the name and structure of an alcohol with three carbon atoms in its molecule . |
| Answer» Propanol | |
| 39004. |
What is the valency of carbon |
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Answer» +/-4 is the valency but always form covalent bond 4 is the valency |
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| 39005. |
How can I get latest cbse sample papers? |
| Answer» | |
| 39006. |
how to make ester??? |
| Answer» | |
| 39007. |
Why electron not move towards the proton?though it attract continue. |
| Answer» | |
| 39008. |
Tomato and tarmarind contains which acid????????? |
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Answer» Tamarind: tartaric acid and tomato: oxalic acid Oxalic |
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| 39009. |
Why sky seems blue when we watch |
| Answer» Due to atmospheric refraction | |
| 39010. |
An animal in which *** is not determined |
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Answer» Snial Earthworms |
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| 39011. |
A=1 b=1 c=5 d=? |
| Answer» | |
| 39012. |
Name three mehodsto control pregnancy |
| Answer» | |
| 39013. |
Why a leaf going downwards after falling from tree |
| Answer» There are two conditions first due to gravity and another is weight of the leaf contain starch | |
| 39014. |
Litmas paper changes blue when |
| Answer» Litmus paper changes red to blue when dipped in base | |
| 39015. |
Explain double fertilization in plants |
| Answer» | |
| 39016. |
Explain sexual reproduction in flowers |
| Answer» Sexual\xa0reproduction in flowering\xa0plants involves the production of male and female gametes, the transfer of the male gametes to the female ovules in a process called pollination. After pollination occurs, fertilization happens and the ovules grow into seeds within a fruit. | |
| 39017. |
Energy ource ued for treatment of cancer |
| Answer» | |
| 39018. |
What are isomers ? |
| Answer» Organic compound with same molecular formula but different physical and chemical properties are called isomers | |
| 39019. |
What is ppm |
| Answer» | |
| 39020. |
What are non-biodegradable chemicals ? |
| Answer» They are those type of chemicals in which microorganisms react on | |
| 39021. |
What is mirror define all the type of mirror and all formula of mirror |
| Answer» A surface, typically of glass coated with a metal amalgam, which reflects a clear image.Types of mirror:\tConcave mirror: A spherical mirror whose reflecting surface faces towards the center of the sphere i.e., curved inwards is known as concave mirror.\tConvex mirror: A spherical mirror with reflecting surface curved outwards is known as convex mirror.\tFormula for convex mirror: 1/u + 1/v = 1/f | |
| 39022. |
Trade |
| Answer» | |
| 39023. |
Which type of mm metal are liquid |
| Answer» | |
| 39024. |
What do you meant by galvanization |
| Answer» It is a process through which we can do prevention of rancidity | |
| 39025. |
Write balanced equation for the following:1.hydrogen+chlorine=hydrogen chloride |
| Answer» | |
| 39026. |
What is renal calculi and what is the reason |
| Answer» | |
| 39027. |
Why OH ions concentration decreases when bases are diluted |
| Answer» | |
| 39028. |
How to draw electronic dot structure of butane\'s isomers? |
| Answer» | |
| 39029. |
What is pollination? |
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Answer» The pollen must be transferred from the anther where it is produced to the stigma where it is germinates forming a pollen tube. This is known as pollination. The transfer of pollen grains from one flower\'s anther to stigma of another flower is called pollination |
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| 39030. |
Friends tomorrow wil be our ntse exam.... ......All the best |
| Answer» Thanks | |
| 39031. |
Which of these changes hard water to soft water ,detergent or soap |
| Answer» I think non of these two changes hard tosoft water but soap donot form lather in hard water or cannot clean anything in hard water because it itself react with calcium and magnesium present in water but detergent can wash or clean weather it is soft or hard water and can produse scum sorry for this tooo long ans. | |
| 39032. |
What is dobereiner\'s triad |
| Answer» According to dobereiner\'s traid:when the elements are arranged in the increasing atomic masses then the group of three elements (known as traid) with similar chemical properties are obtained.The atomic mass of the middle element is equal to the arithmetic mean of atomic masses of the other two elements. | |
| 39033. |
State the importance of newlands law of octaves |
| Answer» According to Newlands\' law of octaves when the elements are arranged in order of increasing atomic weights then every eight element has properties similar to that of the first element.\tElementLiBeBCNOFAtomic Weight791112141619ElementNaMgAlSiPSClAtomic Weight23242728313235.5ElementKCa\xa0\xa0\xa0\xa0\xa0Atomic Weight3940\xa0\xa0\xa0\xa0\xa0\tIn Newlands\' table of elements lithium, sodium and potassium occupied places near each other. Other similar elements like fluorine and chlorine or oxygen and sulphur were placed near each other. This classification worked well with the elements with small atomic weights but failed in the case of elements with large atomic weights. | |
| 39034. |
what is geothetmal energy ? |
| Answer» Geothermal energy is heat energy generated and stored in the Earth. Thermal energy is the energy that determines the temperature of matter. | |
| 39035. |
prism is made by ? |
| Answer» Glass | |
| 39036. |
Non-metal which are both brittle and non-ductile |
| Answer» Sulphur, iodine, phosphorus | |
| 39037. |
Which property of graphite is utilised in making electrodes |
| Answer» Because he conduct electricity | |
| 39038. |
What is convent bond |
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Answer» The bond which is made sharing of electrons The bond which was making by sharing |
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| 39039. |
What is catination |
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Answer» Catenation is the ability to make bonds Catenation is a term which refers to the SELF LINKING PROPERTY of carbon due to which it can form a large no. of compounds. The property of self combination is called catination |
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| 39040. |
Best conductor of electricity |
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Answer» Silver Silver in metals and graphite in non metals Silver |
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| 39041. |
What\'s the full form of AMU. |
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Answer» Atomic mass unit Atomic mass unit Atomic mass unit |
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| 39042. |
Name any two orgainism which reproduce by multiple fission. |
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Answer» Plasmodium Plasmodium |
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| 39043. |
Why is lymph imp in our body |
| Answer» Lymph helps to destroy potentially dangerous bacteria and cancer cells and filter waste and toxins. It is also responsible for working with the circulatory system to help deliver hormones and nutrients to the tissues of the body.The lymphatic system, which is responsible for lymph flow is a series of vessels and nodes, distributed throughout the body. When this system is disrupted by the destruction of lymph nodes or vessels, swelling can occur. This is called lymphedema and is a common problem for women who have had mastectomy with lymph node removal for breast cancer. | |
| 39044. |
How ethanol is prepared in industry? |
| Answer» Sugar industries produce molasses from the sugar cane processing. Molasses have 50 -55% concentration of sugar in the form of sucrose, with chemical formula C12H22O11. This source of compound is used for preparing ethyl alcohol. Ethanol in the form of absolute and rectified spirit can be made from molasses. Basis raw materials for an industry to produce 1 ton of ethyl alcohol requires, molasses up to 5.6 tons, sulfuric acid 27 kg and ammonium sulphate 2.5 kg.The chemical reactions involved for ethanol production from molasses:Main reaction:C12H22O11 + H2O → 2C6H12O6 ,with enzyme invertase.C6H12O6 → 2C2H5OH + 2CO2 -31.2 KCal ,with enzyme zymase.Side reaction:2C6H12O6 + H2O → ROH +RCHO (high molecular weight alcohols C2H5OH) | |
| 39045. |
What are oxidising agents |
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Answer» In chemistry, anoxidizing agent(oxidant, oxidizer) is a substance that has the ability tooxidizeother substances (cause them to lose electrons). Common oxidizing agents areoxygen,hydrogen peroxideand thehalogens. so u understand? THE AGENTS WHCH ADD OXYGEN TO A COMPOUND |
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| 39046. |
Elements belonging to which of the following atomic number belong to the same group11,19,14,18,23 |
| Answer» | |
| 39047. |
what is mean by covalent bond? |
| Answer» | |
| 39048. |
Features of carbonic acid |
| Answer» | |
| 39049. |
what is cloroplasm |
| Answer» | |
| 39050. |
What are differences between acquired traits and inherited traits |
| Answer» Inherited traits\xa0are the characters which are inherited by the offspring from the parents. These traits are present in the form of genetic material, DNA. Genetic material is carried by the vehicles of inheritance, the chromosomes. Each gamete of opposite *** participating in the sexual reproduction donates the traits in the form of genetic material. These traits are expressed in the offspring and later carried on to nect generation. Such traits which are carried from one generation to another generation are called as inherited traits.Acquired traits\xa0as the name says are acquired by the individual during its life time. Acquired traits are due to changes in the life style, injury, loss of body parts, disuse of some body parts. These are the traits which occur in the somatic cells. Changes in the somatic cells are not passed on to the offspring belonging to next generation. | |