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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.
| 45801. |
Explain the process of fertilisation in flowering plants. |
| Answer» Flowering plants generates pollen, ovules, seeds and fruits . Fertilisation in flowering plants happens through a process called pollinination. Pollination occurs when pollen grains from the anther land on a stigma... | |
| 45802. |
What are the many types of Receptor Explains |
| Answer» Olfactory receptors : helps to identify the smell ( found in nose)Photo receptors : vision ( eyes)Phono receptors : sound (ears)Thermo receptors : heat/ cold (skin).........? | |
| 45803. |
Science marking scheme 2019 |
| Answer» Yu can get it frm Google........? | |
| 45804. |
Function of bowmans capsule |
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Answer» It filter all small waste materials. Since blood particles(rbc,wbc,platelets) are large they do not filter only waste is filter Sac sorry In the filtration of blood to form urine . A glomerulus is enclosed in the sach. |
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| 45805. |
How modern periodic table overcame the three limitations of meendeleevs periodic table?❓❓❓❓❓❓❓ |
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Answer» Well defined!! gr8? \tIn Mendeleev’s periodic table, the noble elements were not included in the table as they were not discovered at that time.In Modern periodic table, the noble elements were placed in group 18 as a last and separated group.\tIn Mendeleev’s periodic table, elements with larger atomic weights were placed before elements with smaller atomic weight without any justified reason.In modern periodic table, all were arranged systematically with increasing atomic number and weight too.\tIn Mendeleev’s periodic table, some different elements were grouped together while some similar elements were placed in different groups. Ex: alkali metals like Li , Na, K were placed with coinage metals Cu, Ag, Au etc.In Modern periodic table there was no such confusion, the coinage metals have their own position in d-block and alkali metals are placed in s-block elements.\tIn Mendeleev’s periodic table, the isotopes were placed in different positions.In Modern periodic table, the isotopes were assigned same position as they have same atomic number.\tIn Mendeleev’s periodic table, elements namely Fe, Co, Ni were placed together in Group VIII.In Modern periodic table, these elements were placed under d-block elements in different groups. |
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| 45806. |
Define solinoid |
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Answer» Solenoid is a coil which is completly covered with circular electric wire Solenoid is defined as a coil consisting of large number of circular turns |
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| 45807. |
What is common salt? |
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Answer» Sodium chloride (NaCl),is the common salt NaCl a white crystalline substance which gives seawater its characteristic taste and is used for seasoning or preserving food. |
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| 45808. |
How do amoeba get foid |
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Answer» Ohk thanku Amoeba get food in Pseudopodia |
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| 45809. |
Are working of power plants in sources of energy chapter asked in exams or not |
| Answer» It is asked for 2 to 3 marks only | |
| 45810. |
Yellow colour headlights in foggy weather |
| Answer» | |
| 45811. |
What is the uses of baking soda |
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Answer» Kisi chemical ka use na pata ho to likh Dena used in laboratory Used as soda acid fire extinguisher, used in making baking powder, used for faster cooking.. Also used in soda acid fire extinguisher Used in kitchen for making bakery products and for making baking powder |
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| 45812. |
experiment Binary fisson in amoeba explain |
| Answer» | |
| 45813. |
why are forests considered biodiversity hotspots |
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Answer» Forest are called biodiversity hotspots as we found there a variety of organisms Bcz...all the types of habitat or species are found there.. |
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| 45814. |
Is it true that when new species is emerged,the old species is eliminated .Justify your answer. |
| Answer» No , because new originated from Old one parts | |
| 45815. |
Explain AC genrator with principle and its working |
| Answer» Principle of AC generator is electromagnetic induction.It\'s working see on Google | |
| 45816. |
Diagram of reproductive system of male |
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Answer» See page no. 137 of class 10th cbse book of science Given in app |
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| 45817. |
Which will have higher resistance: a 50w lamp bulb or 25w lamp bulb and by how many? |
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Answer» The lamp bulb having 50w will have the higher resistance by 25 divided by I square. 50w 25W lamp will have higher resistance.. 50 w has higher resistance with a factor of 2 |
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| 45818. |
Why is dna copying essential in our life? |
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Answer» To make same species of plants or animals Dna copying is done to pass the characters to the offspring from parents it inherts the dna and form a new orgainism |
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| 45819. |
What is newland\'s octave rule |
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Answer» When elements r arranged in increasing order of their atomic masses then the property of first event is similar to the property of eighth element. In this, Newland tell that every eight element posses its characteristics same with its first element.He done it by placing elements in musical notes ( Do Re Me Fa So La Ti ) The property of one element match to the property of eighth element placed after first element |
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| 45820. |
What is speciation??what are the factor of speciation |
| Answer» Speciation is the formation of new species from the pre existing ones. Factors affecting speciation r genetic drift, mutation, geographical isolation and natural selection. | |
| 45821. |
What do you mean by solar constant?Explain |
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Answer» It the radioactive energy received from the sun per unit time and per unit area. The value of solar constant is approximately 1.366 kilowatt per square metre.. Energy acquired by our planet per second per sq. metre |
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| 45822. |
What is stereopsis? |
| Answer» It is a term used for the perception of depth or three dimensional object. | |
| 45823. |
Explain with an example how evolutionary realtionship is linked to calssification |
| Answer» Homologous, analogous organs & fossils | |
| 45824. |
On which principle transformer works...... |
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Answer» Nooo Topper aur mera door door tak koi rishta nhi Its work is to regulate the amount of current as per requirement by changing the voltae Toppr is ryt Electromagnetic induction |
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| 45825. |
Convert 100 Watt into unit |
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Answer» Unit..???? Which unit |
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| 45826. |
How do organisms reproduce detailed notes |
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Answer» Nice answer honey Given in app or search on Google |
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| 45827. |
What do you mean by black holes |
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Answer» They also have high gravitational force of attraction due to which it attract ray of light towards it Black holes are in the galaxy which is capable of engulfing any thing in it self |
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| 45828. |
What is solar radiation |
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Answer» Radiation of sun Radiations of sun |
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| 45829. |
Which type of fertilization occurs in human beings |
| Answer» Internal fertilization | |
| 45830. |
Digestion is which type of process?and respiration is which type of process? |
| Answer» Respiration is a exothermic and digestion is endothermic | |
| 45831. |
List three characteristics of lungs which make of an efficient respiratory surface |
| Answer» 1) the system contains an extensive network of blood vessels.2) large and branched surface area3) rich blood supply...... | |
| 45832. |
draw structuers of following compound |
| Answer» Here I can\'t draw.....but which compound are you talking about?? | |
| 45833. |
Why diamonds are gillter |
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Answer» The refractive index of diamond is very high (2.417). The diamond is cut and polished with several facets.Light enters from all sides of the diamond and bounces off several facets before leaving. The farther the light travels before leaving, the more it separates into the rainbow of colors that make it up. A diamond\'s dazzling sparkle is a result of the light\'s bouncing travel inside it Wrong question.... what do u want to ask..... |
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| 45834. |
What to study to get good marks in science |
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Answer» Ncert books and any reference or previous year sample papers.... Ncert is best after it do sample papers Complete yur ncert..... |
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| 45835. |
What is saponification and its reaction |
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Answer» soap is formed by potassium salt or sodium salt with carboxylic acid CH3COOC2H5 ---------> C2H5OH + CH3COONa in the presence of NaoH Reaction of ester/fatty acids with sodium hydroxide to form soap The process of making soaps by hydrolysis of fats and oils with alkalis is called saponification. NaoH+CH3COONa-------------------->CH3COONa+C2H5OH |
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| 45836. |
Explain Transportation in plants breafly only about xylem and phloem. Plzzz??????????????? |
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Answer» Don\'t you have book Xylem and Phloem tissues are present throughout the plant. They begin at the root and then move up to the stem, branches, and leaves.The xylem tissue transports water and minerals from the roots to the leaves whereas the phloem tissue transports food from the leaves to the other parts of the plant. Xylem tissue has tracheids and vessel elements. Phloem tissue has companion cells and sieve tubes.The phloem, on the other hand, is responsible for the translocation of the nutrients like carbohydrates and amino acids from the leaves to other areas of the plants. Here, the flow is bidirectional. It moves up and down the stem. Phloem occupies the edge of the vascular bundle, as seen in the following figure. Food movement in the phloem occurs due to the pressure flow mechanism. The differences in the osmotic pressure help in the movement of food from the area of high concentration to areas of low concentration. Xylem transports water and solutes from the roots to the leaves.Transpiration is the process by which water evaporates from the leaves, which results in more water being drawn up from the roots.....................? |
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| 45837. |
Why upper surface of leaf has fewer stomata |
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Answer» The upper part of leaf have fewer stomata because on the upper part they are more exposed to sunlight and wind. There are many stomata at the lower part because it reduces the rate of evaporation as their is no much sunlight reaching their. Because if it will be in more no. Then because of transpiration there will be more water loss |
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| 45838. |
Board ki preparation ho gyi |
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Answer» Ha.. Just revision is going on Abhi timepass Mere, bhi revision chl re hain...... Mera bhi Haan jiii......bs revision chal rahe hai ....aur aapke |
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| 45839. |
What is Garna |
| Answer» Dark region of stomata | |
| 45840. |
Write three advantages of harssening wind energy......... |
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Answer» Advantages Of Wind Energy1) Wind Energy is an inexhaustible source of energy and is virtually a limitless resource.2) Energy is generated without polluting environment.3) This source of energy has tremendous potential to generate energy on large scale.4) Like solar energy and hydropower, wind power taps a natural physical resource.5) Windmill generators don’t emit any emissions that can lead to acid rain or greenhouse effect.6) Wind Energy can be used directly as mechanical energy.7) In remote areas, wind turbines can be used as great resource to generate energy.\xa0 It protact from pollution |
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| 45841. |
Which country is known as "country of winds".... |
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Answer» Why is it called so....?? \tDenmark is called the country of \'winds\'.\tIndia is ranked 5 th in harnessing wind energy for the production of electricity. Denmark.. |
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| 45842. |
What are primary and secondary fuels........ |
| Answer» Primary fuels- Fuels that directly produce heat on ignition are called primary fuels. They are raw fuels.\xa0Examples are wood, coal, petroleum, natural gas, animal dung, etc.Secondary fuels - Fuels that are processed and prepared from primary fuels are called secondary type of fuels.Examples are charcoal, coke, petrol, diesel, kerosene. | |
| 45843. |
describe the mechanism of heredity |
| Answer» Heredity is the phenomenon of passing traits from parent to offspring. It is also called as mechanism of inheritance.Inheritance involves the transfer of characters from one generation to another generation. Basic features of inheritance are elucidated.*The traits could be hidden in many generations but can reappear in any generation unchanged.*Traits which remain together may get separated in the next generation.*One form of a particular character is exhibited frequently than the other form of the same character. | |
| 45844. |
Out of 60W and 40W kamps, which has electrical resistance when in use. Explain |
| Answer» Let us assume that the two bulbs are connected to the same supply. Let us say the value of the supply is voltage V. Now for 40 W bulbResistance of 40W bulb = V*V/40SimilarlyResistance of 60W bulb = V*V/60Since the denominator of first is less, hence the Resistance of 40 W bulb will be MORE than the resistance of 60W bulb. | |
| 45845. |
Differences between electric energy and electric power. |
| Answer» • Electric energy is a form of energy, but electric power is the electric energy generated or dissipated per second.• Electric energy is measured in joules, but electric power is measured in watt. | |
| 45846. |
How can this principle be utilized to make on electromagnet? |
| Answer» All you need to do is wrap a insulated copper wire around a iron nail. then connect the wire to terminals of battery. when current flows through the wire the iron nail will get magnetised and will become a electromagnet.You can increase the strength of magnetic field of electromagnet by ;1. by increasing the strength of current.2. by increasing the number of turns of wire. | |
| 45847. |
Which are the two parts of plant that secret the gaseous wast in plants? |
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Answer» Thanks To parts of a plant through which exchange of gases take place are:Stromata cells: They are present on the surface of leaves round mouth like openings protected by another bean like structures called guard cells. They perform the exchange of gases between plant and the environment.Lenticles: These are small openings which are present on the surface of stem for the exchange of gases. Plants use completely different srtragies for excretiont than those of animals.The two parsts are stomata and leaves |
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| 45848. |
What is turgor?? |
| Answer» Turgor movement is due to the difference of turgidity of the cells in the lower half and upper half of pulvinus (petiole of leaf). When leaf of touch-me-not plant (Mimosa pudica) is touched, the electrical signal send chemical signals from leaflets to pulvinus (petiole) of leaf. Cells in the lower half of pulvinus lose water and become flaccid, while cells in the upper half of pulvinus become turgid due to accumulation of more water. Hence, leaf droops down for a short time. | |
| 45849. |
Reaction of white and black photography |
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Answer» AgCl and AgBr are the two salts that are used in black and white photography.2AgCl (s) {tex}\\;\\xrightarrow{Sunlight}{/tex} 2Ag(s) + Cl2(g)2 AgBr {tex}\\;\\xrightarrow{Sunlight}{/tex} 2Ag(s) + Br2(g)\xa0\xa0 Aluminium chloride .. |
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| 45850. |
What is Esterification ???? |
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Answer» The reaction between Acid and an Alcohol to produce ester as the product is called Esterification reaction. During this reaction a molecule of water is eliminated.Ex: CH3COOH + C2H5OH →CH3COOC2H5 + H2OIn the above reaction Ethanoic acid reacted Ethyl alcohol to form an ester Ethyl Acetate and water molecule. CH3COOH + CH3CH2OH _______CH3COOCH2CH3 + H2O The process of formation of an ester by the reaction between an alcohol and a carboxylic acid is known as esterification |
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