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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.
| 54801. |
Experiment to show that electric current produced a magnetic field |
| Answer» Oesrted Experiment | |
| 54802. |
Name two fossil fuels |
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Answer» Coal and petoleum Coal and petroleum |
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| 54803. |
What is the zinc |
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Answer» Zinc is metal and it is d block element Sorry, it is in 4th period and has 12th group. Zinc is a metal and it is d block element.It is in 4 Period and has 12th period.Its atomic number is 30 and mass number is\' 65.4 \'and has symbol \'Zn\' It is a metal. |
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| 54804. |
Is velocity of light can be 2.67 * 10\'8\'m/s |
| Answer» Yes, if it gets refracted in a denser medium | |
| 54805. |
2mark questions |
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Answer» Would you like to do friendship with me Hllo Medium type quesrions |
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| 54806. |
No body can explain Darwin theory? ??please |
| Answer» Darwins theory is tells us that an organism can produce enormous progeny in its lifetime | |
| 54807. |
Differentiate between parasymphathetic and symphathetic?? |
| Answer» \tSympatheticParasympatheticThe main function of the sympathetic nervous system is to ready the body’s “fight or flight” responseMain function of the parasympathetic nervous system is to maintain homeostasis and also, enable the “rest and digest” responseSympathetic system prepares the body for any potential dangerParasympathetic system aims to bring the body to a state of calmSympathetic system has shorter neuron pathways, hence a faster response timeHas comparatively longer neuron pathways, hence a slower response timeIncreases heart beat, muscles tense upReduces heart beat, muscles relaxThe pupils dilate to let in more lightThe pupils contractSaliva secretion is inhibitedSaliva secretion increases, digestion increases\t | |
| 54808. |
What will be function when animals DNA goes to human body .what will be changed ... |
| Answer» | |
| 54809. |
What are synthetic detergents |
| Answer» Synthetic detergents are used for cleansing purposes and have wetting and emulsifying properties. They have structures different from soaps. They are similar to soaps in a way such that they are composed of molecules having water soluble and oil soluble ends.Examples: (i) Sodium lauryl sulphate and (ii) Sodium n-dodecyl sulphate. | |
| 54810. |
Write the chemical name of plaster of Paris |
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Answer» Calcium sulphate hemihydrate (CaSO4.1/2H2O) Calcium sylphate hemihydrate |
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| 54811. |
How to study? |
| Answer» you study in1st work you study in any one chapter2nd you under line main topic3rd you learn in this topic and 4th you learn in under line work write in note book | |
| 54812. |
How many isomers are in pentane |
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Answer» There three type of isomers can be drawn in the pentane:1)n-pentane2)iso-pentane3)neo-pentane 1.normal2.iso-pentane3.neo-pentane There are three isomers of pentane Normal pentane2 methyl butane 2-2 dimethyl propane All three isomers Five |
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| 54813. |
How many isomers of hexane are possible |
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Answer» There are five isomers of hexane 1. Normal hexane 2. 2-methyl pentane 3. 2-3 dimethyl butane4. 2 dimethyl butane 5. 3 methyl butane 5 isomers Four isomers of hexane 5 isomers are possible |
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| 54814. |
State the functions of renal cavity, kidney, urinary bladder |
| Answer» Urinary Bladder : It is a sac-like structure that is lined with smooth muscle layer and is responsible for storage of urine till it is expelled from the body by micturition. Micturition is the act of expelling urine from the body. The bladder receives urine from the ureters, one from each kidney. The level of the urinary bladder placement in the body differs in men and women.Kidneys : Kidneys are the main organ of the human excretory system. The kidneys are paired organs in each individual. They are the primary excretory organ in humans and are located one on each side of the spine at the level of the liver. They are divided into three regions- the renal cortex which is the outer layer, the renal medulla which is the inner layer and the renal pelvis which is responsible for carrying the urine from the kidney to the ureter. The functional unit of a kidney is called the nephron.\xa0 | |
| 54815. |
What is inubation period? |
| Answer» Mumps has an incubation period of 16-18 days; however, cases can arise 12-25 days after exposure. After this period, prodromal symptoms (such as low-grade fever, malaise, myalgias, headache, and anorexia) occur; these symptoms can last 3-5 days. | |
| 54816. |
What is the advantages of corrosion? |
| Answer» Corrosion is a natural process which converts a refined metal to a more chemically - stable form, like as oxide, sulfide, hydroxide. It is the gradual destruction of materials by chemical and/ or electrochemical reaction with environment.It\'s advantages are following ;1 . It acts as barrier for air and moisture2.It prevents inner layer of metals from corrosion3 . this is the principle behind "anodizing" steel to guard against rust.\xa0 | |
| 54817. |
Which one has bigger size Na(11) or cl(17), cl(17) or f (a) |
| Answer» Na and F | |
| 54818. |
Different between gene and chromosome |
| Answer» Genes contain DNA (deoxyribonucleic acid). DNA is the chemical basis of heredity. Think of it this way: DNA is in genes, genes are on chromosomes. When "mapping" all genes on all human chromosomes was first seriously conceived, it was called the Human Genome Project - a combination of gene and chromosome | |
| 54819. |
How new species are formed by speciation |
| Answer» Speciation, the formation of new and distinct species in the course of evolution. Speciation involves the splitting of a single evolutionary lineage into two or more genetically independent lineages. | |
| 54820. |
What does epidermal cells do? |
| Answer» The epidermis is a single layer of cells that covers the leaves, flowers, roots and stems of plants. It forms a boundary between the plant and the external environment... | |
| 54821. |
What is trihybrid |
| Answer» Definition of trihybrid. : an individual or strain that is heterozygous for three pairs of genes. | |
| 54822. |
What evidence can you suggest that modern human being have existed in Africa? |
| Answer» | |
| 54823. |
Define atosomos and ***-chromosome |
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Answer» Any chromosome not considered as a *** chromosome, or is not involved in *** determination. It occurs in pairs in somatic cells and singly in *** cells (gametes) Autosomes: Autosomes are numbered chromosomes that contain genes for anything that does not relate to *** determination. Humans have 22 pairs of autosomes*** chromosomes: A type of chromosome in the genome that is involved in the determination of the *** as well as the development of sexual characteristics in an organism An autosome is a chromosome that is not an allosome (a *** chromosome). The members of an autosome pair in a diploid cell have the same morphology, unlike those in allosome pairs which may have different structures. ... Autosomes still contain sexual determination genes even though they are not *** chromosomes. Chromosome is a thread like structure made up of dna which is present in the nucleus Autosome means that accept 1 pair of *** chromosome in 23 pairs |
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| 54824. |
Kisi ko question paper mile board ka to hamre kripya sampark krein???? |
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Answer» I m asking not answering ? Seriously....main thing is that boards papers are not ready till yet of CBSE..OKKK so how can you get the papers... Really you get the question paper of boards 9955708182 |
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| 54825. |
Petals |
| Answer» Petals are modified leaves that surround the reproductive parts of flowers. They are often brightly colored or unusually shaped to attract pollinators. Together, all of the petals of a flower are called a corolla | |
| 54826. |
Why vegetable oil is better |
| Answer» As they does not deposit in our arteries.. | |
| 54827. |
What is the melting point and boiling point of Ethanol? |
| Answer» Melting point-173.5\'F(-114.1\'C)Boiling point-173.1\'F(78.37\'C) | |
| 54828. |
What happen after fertilisation in flowering plant |
| Answer» Post-fertilization is a series of events that takes place after fertilization to develop a seed from an ovule and a fruit from an ovary.The following events occur in the post-fertilization.\tEndosperm development: Endosperm is a type of tissue, which is present in the seeds of flowering plants during the time of fertilization. Reserve food materials fill in the cells of endosperm tissue. It provides nutrition to the developing embryo in the form of starch.\tEmbryogeny: Embryogeny is defined as the process of growth and development of an embryo from a zygote in the flowering plants. Embryo development stages are same in both monocot and dicot plants. | |
| 54829. |
How to form carboxlic acid |
| Answer» | |
| 54830. |
Why alloys are used as heating devices? |
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Answer» Because it has high resistance. Alloys are used rather than pure metals in electrical heating devices since they have low electrical conductivity and also a low melting point. Usually the alloys don\'t have a single melting point; they have a range of melting points. |
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| 54831. |
What is the formula of resistivity |
| Answer» Resistivity or specific resistance is resistance of a conducting material of unit length and having unit area of cross section. It is a property of material and depends on nature of material.ρ = RA/lWhere,\xa0ρ\xa0is the resistivity,\xa0R\xa0is the resistance,\xa0l\xa0is the length of the material and\xa0A\xa0is the area of cross-section.SI unit is Ohm-m (Ω.m) | |
| 54832. |
Why voltmeter is always connected in parallel connection |
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Answer» A voltmeter is a device used to measure the potential difference “Between Two Points”. In order to measure the potential between two points, we have NO WAY around except to connect it in Parallel. A voltmeter is a device of having high resistance. So, if we connect it in Series, it would hinder the current flow in the circuit hence Open Circuit results. That’s why we do not connect it in Series. Yet |
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| 54833. |
Explain the process of reproduction in plants |
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Answer» It is correct answer Plant reproduction is the production of new individuals or offspring in plants, which can be accomplished by sexual or asexual reproduction. Sexual reproduction produces offspring by the fusion of gametes, resulting in offspring genetically different from the parent or parents. Asexual reproduction produces new individuals without the fusion of gametes, genetically identical to the parent plants and each other, except when mutations occur. In seed plants, the offspring can be packaged in a protective seed, which is used as an agent of dispersal. Answer |
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| 54834. |
How the urine formation takes place ? |
| Answer» Glomerulus is a tuft of capillaries at the point of origin of each vertebrate nephron that passes a protein-free filtrate to the surrounding Bowman\'s capsule. Glomerulus is a tiny ball-shaped structure composed of capillary blood vessels actively involved in the filtration of the blood to form urine. The glomerulus is one of the key structures that make up the nephron, the functional unit of the kidney.\xa0Different steps involved in the urine formation are\xa0Glomerular filtration, Reabsorption and Secretion.\xa0Glomerular filtration\xa0is the first step in urine formation. Blood comes to the kidney via the renal artery, branches into even smaller arteries and eventually into the afferent arteriole. The afferent arteriole feeds into the glomerulus, providing the blood for the glomerular capillaries.\xa0As the blood travels through these capillaries, filtration causes a lot of the plasma contents to spill out. They spill out of the glomerular capillaries which end up within the glomerular capsule. The glomerular capsule is continuous with the rest of the renal tubules. The solution that spills out in the renal corpuscle is the solution that we will clean out to make urine.\xa0Reabsorption\xa0is the process which involves the reabsorption of valuable solutes and water back into the blood.Secretion\xa0is the third step in urine formation which helps in maintaining the acid-balance of the body. | |
| 54835. |
" evolution is never uni-directional" explain the statement. |
| Answer» | |
| 54836. |
define fertilisation |
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Answer» Fussion of male and female gemets Fusion of male and female gamets is known as a fertilization. And their result is zygote. It is the process in which male and female gamete fuse with each other Fertilisation is the process in which the male gamet i.e sperm and the female gamet i.e ova fuses with each other to form zygote the fusion of a male gamete with a female gamete to form a zygote during the sexual reproduction is called fertilisation |
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| 54837. |
How earth act as magnet? |
| Answer» Because earth have two poles north and south and it alsi attracts us same as a magnet that the real magnet attracts the metals. | |
| 54838. |
Write the genotype of dominent Hetrozygous violet of garden pea plant . |
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Answer» Vv Ans plzzzz |
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| 54839. |
The DNA is called blue print of life why |
| Answer» DNA is called the blueprint of life because it contains the instructions needed for an organism to grow, develop, survive and reproduce. DNA does this by controlling protein synthesis. Proteins do most of the work in cells, and are the basic unit of structure and function in the cells of organisms. | |
| 54840. |
What is the stimuli |
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Answer» the changes in the environment to which the organisms respond and react are called stimuli Any type of change around us is termed as stimuli |
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| 54841. |
Why coal burn without flame |
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Answer» Bcz coal has no voletile material Thanks Piyush Coal too burning in air produces co2,heat and light but it doesn\'t produce any flame because it doesn\'t vaporise on burning.The substances that vaporise on burning produces flame e.g, kerosene oil,petrol e.t.c. |
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| 54842. |
balancing equation |
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Answer» Skeletal equations are known as balanced equation A equation that has equal number of atoms in both reactant and product side is called balanced equation and the process of balancing a chemical reaction is called balancing an equation |
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| 54843. |
Why detergents are also known as Soapless soaps? |
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Answer» What a nice explanation ? Traditionally soaps are Sodium or potassium salts of fatty acids, however, detergents are nor salts but are simply surface active chemicals showing soap like properties. hence they are called as soap less soaps. |
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| 54844. |
Current(I) is a vector or scaler quantity |
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Answer» It is scaler quantity Scaler I think scalar but not sure |
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| 54845. |
What is mechanism of blood clooting |
| Answer» Blood normally remains in its liquid state while it is within blood vessels but when it leaves them the blood may thicken and form a gel (coagulation). Blood clotting (technically "blood coagulation") is the process by which (liquid) blood is transformed into a solid state. The mechanism of blood clotting is a complex process involving many clotting factors (incl. calcium ions, enzymes, platelets, damaged tissues) activating each other. | |
| 54846. |
What is sliva |
| Answer» | |
| 54847. |
Application for thermite reaction |
| Answer» The reaction, also called the Goldschmidt process, is used for thermite welding, often used to join rail tracks. Thermites have also been used in metal refining, disabling munitions, and in incendiary weapons. Some thermite-like mixtures are used as pyrotechnic initiators in fireworks. | |
| 54848. |
What is halogens? |
| Answer» The halogens are a group in the periodic table consisting of five chemically related elements: fluorine, chlorine, bromine, iodine (I), and astatine. The artificially created element 117 may also be a halogen. In the modern IUPAC nomenclature, this group is known as group 17. | |
| 54849. |
Explain heat |
| Answer» It is a form of energy in which the substances gain or lose the kinetic energy present in between their moleculesThe higher heat, higher kinetic energy | |
| 54850. |
What is generator? Write is principle, construction and working? |
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Answer» It is based on the principle of electro magnetic induction A generator is a substance which convert mechanical energy into electrical energy |
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