InterviewSolution
Saved Bookmarks
InterviewSolution
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.
| 67601. |
Can you give the latest blueprint of science |
| Answer» Chech on net. | |
| 67602. |
What is the dental plaque |
| Answer» If the teeth are not cleaned regularly and properly,they become covered with a sticky,yellowish layer of food particles and bacteria which is called dental plaque...... and a bacteria name Streptococcus mutans can cause, cavity to the teeth.........? | |
| 67603. |
Which harmone in plant |
|
Answer» Cytokinin gebrallin absasic acid auxin ethylene Auxins cytokinin gibberellin abscisic acid and ethylene There r 5 hormones auxin,gibberalin,cytokinin,ethylene,abscisic acid |
|
| 67604. |
In modern periodic table can we learn the elements till 20 or do we have to learn more |
|
Answer» U can learn till 30 also It will help you only if u are done with the whole periodic table |
|
| 67605. |
What is the work of xylem? |
|
Answer» Transportation of water and minerals from roots to whole part of plant body... Xylem is a complex plant tissue or vascular tissue.\xa0Xylem consists of four elements that are-:(i)\xa0Tracheids. A tracheid is an elogated hollow cell with its both ends tapering. The walls of these cells are thick by the deposition of lignin. At certain spots lignin is not present.These spots are termed as pits. These cells are arranged in such a fashion so as to form a system of long tubes and channels in which water can move readily. The tracheids are dead cells. The walls show various kinds of thickenings.(ii)\xa0Vessels are tube like structures formed by a number of cells placed end to end with their transverse walls dissolved or absorbed. The side walls of these tubes also have deposition of lignin. The thickening of the walls show various kinds of patterns. They are also dead cells.(iii)\xa0Wood (xylem) Parenchyma. These are parenchymatous, thin walled living cells. They help in short term conduction of materials. They also store starch and fatty materials.(iv)\xa0Wood Fibres. Xylem sclerenchyma consists of lignified dead fibres. They provide mechanical support.The most important element of xylem is vessel because they conduct most part of water and mineral salts upward from roots to different parts of shoots. |
|
| 67606. |
Why do fire flies glow at night...? |
|
Answer» Fire flies have a special kind of substance, i.e. luciferin that undergoes oxidation in the presence of air and an enzyme. This reaction is accompanied by emission of light. Therefore, fire flies glow at night. Because they have a protein called luciferin which undergoes enzymatic oxidation due to which there is emission of light and they glow at night Sry.....but can j explain more Because you see these |
|
| 67607. |
When a cell reproduces, what happens to the DNA ? |
|
Answer» DNA is copied Dna in the nucleus of a cell is the source of a energy and thereby controls protein characters. If the information is changed thereby altered dna characters abd thereby altered protein characters or designs. |
|
| 67608. |
What are value based questions of chemistry |
| Answer» Sorry dude this time no VBQ (Value Based questions) are coming in boards..better luck next time | |
| 67609. |
We need lesson wise previous year question paper with answer as pdf format for science |
| Answer» | |
| 67610. |
Differentiate between ethanol and ethanoic acid on the basis of chemical properties |
| Answer» \tEthanolEthanoic acidThe functional group in ethanol is -OH alcohol.And functional group in ethanoic acid is –COOH carboxylic acidIt has sweet odourIt has pungent odourIt does not react with Sodium bicarbonate (NaHCO₃)It reacts with Sodium bicarbonate (NaHCO₃) releasing CO2 gas.It does not change the colour of blue litmus paper.It can change the colour of blue litmus to red\t | |
| 67611. |
All equations of chemistry ? |
|
Answer» I can n even i have made notes See in your book |
|
| 67612. |
Define feedback mechanism |
| Answer» Feedback mechanism is the mechanism of the body to maintain the levels of hormones in the body in the desired limits. ... Such a mechanism is called a negative feedback mechanism. | |
| 67613. |
Difference between volt metre and metre |
|
Answer» Volt metre is always connected in parallel combination whereas metre in series combination.Voltmetre =W/Q Voltmeter is used in parallel conections whereas meter use in series connection Voltmetre is used to measure electric potential |
|
| 67614. |
Two biogas name |
|
Answer» Thanks Methane Hydrogen sulphide 1) methane .( 65-75 percent)2) co2(20-30percent)3) hydrogen(5-10percent) 4) hydrogen sulphide (traces) 5) nitrogen(2-6percent) Thus, main constituent of biogas is methan. I hope it is useful for u☺☺☺ Carbon dioxide, hydrogen, hydrogen sulphide Methane |
|
| 67615. |
Rasaynic sutra kya hai |
| Answer» Chemical formula | |
| 67616. |
In a flowring plant,summarise the event that take place after fertilization |
|
Answer» After fertilization the ovule hardens and forms the seed and the ovary swells and becomes the fruit Zygote is formed and then seed is formed |
|
| 67617. |
Working of a motor |
| Answer» Its too long here to explain | |
| 67618. |
WHAT IS THE FULL CHIMICAL NAME OF TITIN ! |
|
Answer» It is so long to say Heard the name 1st time....."titin"....well ... what\'s the answer...??? ???????? |
|
| 67619. |
What happens when bases react with metals |
| Answer» It gives salt +hydrogenFor ex Zn+2NaOH------>Na2ZnO2+H2 | |
| 67620. |
Difference between acids and base |
|
Answer» Acids are those substances which gives H+ ion when dissolved in water . Acids are sour in taste and change blue litmus to red. Bases are those substances which gives OH- ion when dissolved in water . Bases are bitter in taste and change red litmus to blue. Acids are bittet in taste.and bases are soure in Taste |
|
| 67621. |
What are homologus and analogus organs |
|
Answer» Homologous Organs:1. They differ morphologically.2. They have similar internal structure.3. They develop in related organisms.4. Stages in the development are similar.5. They perform different functions.6. They have similar developmental pattern.7. Homologous organs show adaptive radiation (divergent evolution).Analogous Organs:1. They show superficial resemblance.2. Their internal structure is quite different.3. They develop in unrelated organisms.4. Stages in the development are different.5. They have similar functions.6. They have dissimilar developmental pattern.7. Analogous organs show convergent evolution. Homolougous organs have same structures but diffrent functionsAnalougous are the one with diffrent structure but same functioms |
|
| 67622. |
What prevent us in making use of solar cell panels to meet all our domestic of electricity |
| Answer» The cost of solar panels are high and also the sun light is not present at night and during rainy days so, solar panels cannot be used to meet electricity need at home.Only DC electricity is produced by SPV.To operate any AC device, this dc has to be 1st converted in as by using inverters. | |
| 67623. |
State two ways by which the strength of an electromagnet can be increased |
| Answer» \tWe can increase the strength of electromagnet by increasing the no. of turns in the coil and also by increasing the strength of current flowing in the coil.\tSoft iron core is used to make an electromagnet. | |
| 67624. |
What is the SI unit of magnetic flux ? |
| Answer» phi is the si unit of magnetic flux.. nd its symbol is ....Φ | |
| 67625. |
What is the roll of light sulphuric acid in electrolysis of water |
|
Answer» Pure water is not good conductor of electricity and it does not ionise where\'s sulphuric acid ionise in aqueous solution and conduct electricity As sulphuric acid contains ions in it which increases the electrolysis speed |
|
| 67626. |
what is peripheral nervous system |
|
Answer» 1) The peripheral nervous system consists of nerves that arise from the brain and spinal cord.2) The peripheral nervous system has 43 pairs of nerves of these 12 pairs are called CRANIAL NERVES and the rest of 31 pairs are called SPINAL NERVES.3) The grey matter of the spinal cord appears like butterfly or in the shape of letter ‘H’. Each segment of the ‘H’ shaped grey matter is called ‘HORNS’.4) The upper horns are called \'DORSAL HORNS’ and the lower horns are called ‘VENTRAL HORNS’.5) The sensory fibres originate from the dorsal horn of the spinal cord; They carry information from body organs to spinal cord.6) The motor, fibres take their origin from the ventral horns of the spinal cord. These supply information required for the movements of the muscles. Peripheral nervous system is one of the part of a nervous system which is consist of spinal nerve(31 pair)and cranial nerve(12 pairs).........reflex arc ....reflex action is also counted under it... |
|
| 67627. |
What prevent backflow of blood during contraction |
|
Answer» Valves prevent back flow of blood inside the heart. Tricuspid and bicuspid valves are the valves present in the heart. Valve are present in heart which help in the backward flow of blood . |
|
| 67628. |
What is the prime source of energy |
| Answer» Sun | |
| 67629. |
What is solvay process. |
| Answer» The Solvay process is used to manufacture sodium carbonate Na2CO3 The steps involved in this process are:1. Purify saturated brine2. React it with gaseous ammonia3. The ammoniated brine is carbonated with CO2 to form NaHCO34. This is insoluble in brine solution, so can be filtered out. | |
| 67630. |
Why dna important to process of reproduction |
| Answer» DNAs are the carriers of genetic information. For an organism to produce its own kind, it becomes necessary that the offspring get similar DNAs as in parents. DNA replication is the way through which a cell makes additional copies of DNA so that they can be transferred to the offspring. This explains how DNA copying is an essential part of the process of replication. | |
| 67631. |
Why does diamond glitter? |
|
Answer» \xa0Its due to Total internal reflection , TIR.When the light rays enter diamond it acts as a prism and disperses the light in its seven constituent colours and after when these colours strike the others surface of diamond TIR takes place and then after emerging the white light again combines into white light and we see the diamonds as if they are sparkling Dut to its high refractive index and sharp ends |
|
| 67632. |
Coughing is a reflex action or involuntary |
|
Answer» It\'s an involuntary action controlled by medulla Reflex action ... Dude? Involuntary |
|
| 67633. |
sneezing is a reflex action or not |
|
Answer» Involuntary action... No, because it is controlled by medulla that means it\'s an involuntary action Noo Yes |
|
| 67634. |
Name and define smallest commercial unit of electricity. |
|
Answer» The smallest commercial unit of electricity is the kilowatt-hour (kWh). The total energy is equal to the consumption of power for 1 hour. It will be equal to the total of 3.6 × 106 J in energy. KWh |
|
| 67635. |
How is the process of pollination different from fertilisation |
| Answer» Pollination is the transfer of pollen grains from anther to stigma while fertilisation includes fusion of gametes | |
| 67636. |
Formation of soap and detergents |
|
Answer» SoapsThe soap is sodium or potassium salts of higher fatty acids (long chain carboxylic acid) which as cleaning property of water detergentsA detergent is the sodium salt of long chain alkyl hydrogen sulphate or a long chain of benzene sulphonic acid Preparation of soap in laboratory:\tAnimal fat or vegetable oil act as glyceride or glyceryl ester. And sodium hydroxide and potassium hydroxide act as bases.\tTake about 30 ml of vegetable oil in a beaker. Then add 60 ml of 20% sodium hydroxide solution to it.\tThis mixture is heated slowly till it boils. After the mixture has boiled for five to ten minutes add 5grams of sodium chloride in order to separate soap from the solution. Allow the solution to cool. The creamy layer floating on top of the solution is the soap. \tThus soap is prepared by hydrolysing fat or oil with bases such as sodium hydroxide or potassium hydroxide. This process of soap preparation is known as saponificationDetergents:Detergents have almost the same properties as soaps but they are more effective in hard water.\xa0Detergents are generally ammonium or sulphonate salts of long chain carboxylic acids. The charged ends of these compounds do not form insoluble precipitates with the calcium and magnesium ions in water.\xa0 Soap is sodium salt of long chain hydrocarbon formed by saponification reaction Custard oil+NaOH=soap |
|
| 67637. |
What is omh law |
|
Answer» Okay Omh lawis v=ir V=IR V=IR Vir |
|
| 67638. |
Which organ is working in birds but vestigial in humans?? |
|
Answer» \tVestigial organ is an organ that has no use in the present, but suggests evolution of the species.\tThe human has a vestigial organ called appendix, not present in birds.\tThere are other vestigial organs like thymus, pineal gland and tonsils.\tThese are essential in suggesting human evolution has taken place.\xa0 May be Appendix but not sure I think wings ...not sure..... |
|
| 67639. |
Explain 3R\' to save natural resources |
|
Answer» The three R’s are: Reduce, Recycle and Reuse.Reduce means that you use less. Saving electricity by switching off unnecessary lights and fans. Saving water by repairing leaking taps and closing taps when not in use. Not wasting food. Using less of your personal vehicle ans saving on fuel.Recycle: This means that you collect plastic, paper, glass and metal items and recycle this material to make required things instead of synthesising fresh plastic, paper, glass or metal. The waste must be separated into recyclable and non recyclable.Reuse: This is even better than recycling because it saves the energy which is spent at recycling a product. Things are used over and over again. For example, envelopes can be reused by reversing them. Plastic and glass bottles, in which packed items come, can be reused to store many materials in kitchen. We can reuse the water in which we have rinsed our cloths for cleaning the utensils or the floor of the house. Old newspaper can be used for packing. All this will help reduce the waste and garbage produced and keep a check on pollution. Reduce,reuse,recycle |
|
| 67640. |
What\'s the diff bw reflex action and involuntary action. Example. ? |
|
Answer» Whattt? Involuntary action are those actions which go on continuously without even thinking about them for example heart beat,digestion,etcBut reflex action are those actions which we perform suddenly for example moving our hands away from a hot utensil when we accidentally touch them Involuntary action is the set of muscle movement which do not require thinking. But it is controlled by brain for example beating of heart beat. While on the other hand, the reflex action is rapid and spontaneous action in response to any stimulus which doesn\'t involve brain I think in question it should be voluntary not involuntary |
|
| 67641. |
Which material has higher resistivityA) tungsten or B)mercury |
|
Answer» Tungstun (A) Obviously tungsten ??? Yes A |
|
| 67642. |
Why sulphurous acid is a reducing agent? |
|
Answer» We can\'t delete answers after posting. So bad Sulphurous acid is a reducing agent because of its tendency to lose electrons easily than its subsiding elements to another chemical substance in a redoxiation reaction. It is an reducing agent because it reduce water from alcohol to make it ehene. Its not a reducing agent in my knowledge ?? The bromide ions reduce the sulphuric acid to sulphur dioxide gas. This is a decrease of oxidation state of the sulphur from +6 in the sulphuric acid to +4 in the sulphur dioxide. |
|
| 67643. |
Two limitation of dams for the production of hydroelectricity |
|
Answer» Also it is very costly to build and the nearby flora and fauna also gets submerged 1. Can not produce large amount of energy. Disadvantages:\tA vast variety of flora and fauna (plants and animals) get affected.\tDams can be constructed only at a limited number of places. 1)not available every where2)not made everytime as most rivers are seasonal |
|
| 67644. |
Which enzymes present in saliva breaks down starch |
|
Answer» Salivary amalyse Salivary amalyse Salivary Amalyse... |
|
| 67645. |
What is gene ?how it is transfer |
|
Answer» A unit of heredity present in the chromosomes DNA that instructs the cells to produce a specific protein which is transferred from a parent to offspring and is help to determine some characteristic of the offspring Gene is a segment in DNA and forms basic unit of heridity Genes are the units of D.N.A by which the characters of parents are transferred to their offspring. These are the chemical which inherit character of parents.by repriduction |
|
| 67646. |
How evolutionary relationships can be traced by study of homologous organ |
| Answer» | |
| 67647. |
Define DNA ? |
|
Answer» DNA stands for deoxyribonucleic acid.It is the unit which carries the inherited traits and information of the future generations Your spelling mistak deoxyribonucleic acid hota hai Dexyribic nucleic acid |
|
| 67648. |
Difference between acquired and inherited traits..... Plzz ans me guysss.... ? |
|
Answer» \tAcquired TraitsInherited TraitsTraits developed during lifetime.Traits presents since the birth.\xa0Cannot be inherited that is do not pass to the offspringsAre inherited by the offsprings.\xa0Not in the genes. for eg behaviour, art of playing an instrumentIn the genes. For example hair colour , height.\xa0\t Aquired traits - these are hte traits which are devloped in an indiviualdue to special condition.Inherited traits - these are the traits which are passed from one generation to another generation. |
|
| 67649. |
Formula chemical |
| Answer» | |
| 67650. |
What is unit of m |
| Answer» | |