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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.
| 54551. |
What is electrical circuit and its components? |
| Answer» The proper arrangements of all the components that helps to flow the current easily is known as electric circuit. It\'s components are :1. Bulbs 2. Resistance 3. Ampere 4.volmeter5.switch e.t.c. | |
| 54552. |
What is the end product of lipase |
| Answer» Digestion is the breakdown of carbohydrate poteins and facts in to small solube substances to be absorbed in to the blood. Amylase, proteases and lipase are enzymes that are important in digestion. | |
| 54553. |
The defect of vision which cannot be corrected by using spectacles is mcq |
| Answer» Cataract | |
| 54554. |
While the coil in a heater glow ,wire does not glow. Justify the statement |
| Answer» The heating element of the heater is made up of alloy which has very high resistance compared to the cord of an electric heater.Since, the heat produced is directly proportional to the resistance,it becomes too hot and glows red due to heating effect of the current.But the resistance of the cord which is usually of copper or aluminium is very low so it does not glow. | |
| 54555. |
What vis eye |
| Answer» I think yu have written yur question wrong ???... plz check it shaya apne what is eye pucha hai...... | |
| 54556. |
Why magnesium ribbon is cleaned before burning? |
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Answer» A magnesium ribbon is cleaned to remove the protective layer of magnesium oxide from its surface so that it may readily combine with oxygen of air (on heating). Magnesium oxide hatane waaste nhi toh achhe se jalega nhi |
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| 54557. |
Yrr mai yaha new hu aur koi mujhse baat karne waala hi nahi hai |
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Answer» Are plse aa jao ayaz????? Hi sorry I am late Hi i am also new |
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| 54558. |
What is diffractionOf light |
| Answer» Diffraction is the slight bending of light as it passes around the edge of an object. The amount of bending depends on the relative size of the wavelength of light to the size of the opening. | |
| 54559. |
List Listerine excretion gland |
| Answer» | |
| 54560. |
In which formula (lens and mirror) the magnification is in negative sign |
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Answer» Lens formula is given by:\xa01/v - 1/u = 1/fwhere :\tu – image distance\tv – object distance\tf – focal lengthMagnification: The ratio of the height of the image and the height of the object. It is represented by the letter m.m = height of image/height of object = h\'/h = v/u\t\xa0The positive sign shows that the image is erect and virtual.\tThe negative sign shows that the image is inverted and real. In the Gaussian form of the lens equation, a negative sign is used on the linear magnification equation as a reminder that all real images are inverted. If the image is virtual, the image distance will be negative, and the magnification will therefore be positive for the erect image. |
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| 54561. |
Why there is no SI unit of refractive index |
| Answer» Since, Refractive Index is the ratio of the velocity of light in a vacuum to its velocity in a specified medium. | |
| 54562. |
Describe in brief the change that uterus undergoes 1. To receive the zygote2. If zygote is not fomed |
| Answer» (i) The uterus prepares itself every month to receive a fertilized egg/zygote- The inner uterus lining (endometrium) becomes thick and is supplied with blood to nourish the embryo.(ii) If the egg is not fertilized, then the uterus lining is not required. Hence, it breaks down and gets released in the form of blood and mucus through the ******. This process lasts for 2-8 days. This cycle occurs every month and is known as menstruation. | |
| 54563. |
What happens when dilute hydrocloric acid is aaded to iron fillings?Explain. |
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Answer» When hydrochloric acid is added to iron filings then hydrogen gas and iron chloride are produced.You can see it from following reaction:Fe + 2HCl → FeCl₂ + H₂ When dilute HCl is added to iron fillings. Iron being more reactive than hydrogen displaces hydrogen and form ironchloride. |
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| 54564. |
Happens when an iron nail is put inside copper sulphate solution write the chemical reaction |
| Answer» Copper displace from iron and the solution turns bule.The chemical reaction is given below:CuSo4+Fe=Feso4+Cu | |
| 54565. |
How many 176 ohms resistor in parallel are required, to carry 5 ampere on a 220 volt line? |
| Answer» In n resistors each of resistance R are connected in parallel, then net resistance\xa0Rp is:\xa0{tex}\\frac1{R_p}=\\;\\frac1R+\\frac1R+.........\\;n{/tex} times\xa0{tex}\\;\\frac{1\\;+\\;1\\;+..............n\\;times}R=\\frac nR{/tex}{tex}\\;R_p=\\frac Rn{/tex}\xa0Now {tex}\\;R_p=\\frac VI=\\;\\frac{220}5\\;=\\;44\\;\\Omega{/tex}{tex}\\frac Rn{/tex}= 44 but R = 176 Ω{tex}\\;\\frac{176}n\\;{/tex}= 44 or n = 44 resistors each 176 Ω connected in parallel with result in net resistance of 44 Ω causing a current of 5A to flow through when connected to 220V. | |
| 54566. |
What is the meaning of absolute refractive index |
| Answer» Absolute refractive index is the refractive index when a light ray passes from air to the given medium or from a medium to air. We thus apply Snell\'s law as follows(for a ray going from air to a medium), {tex}\\mu{/tex}asini = {tex}\\mu{/tex}msinr. where {tex}\\mu{/tex}m is the refractive index of the medium. | |
| 54567. |
Potential difference and its importance |
| Answer» A battery if fully charged has a potential difference between 2 points. The positive and the negative terminals. One terminal connects to some material that has a shortage of electrons and the other connects to a terminal that has an excess of electrons.This Potential difference is necessary to force electron flow through the resistance of a load and conductors. Otherwise no current will flow and no work is done.The greater the potential difference the greater the electron flow.Potential difference is measured in Volts and the electron flow is measured in Amps.Ohm’s law I= V/R describes the relationship between resistance , voltage and current. | |
| 54568. |
Uses of mineral acid in industries |
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Answer» Mineral acid some example H2SO4(sulphuric acid),HCl(hydrocloric acid),HNo3(nitric acid) and now uses...H2So4=it used to make other chemicals,reduce corrosion,refine oil and creat fertilizers.....HNo3=it used to make explosive,dyes and fertilizers...HCl=is used in laboretry in all over , is used to make PVC,food products and extract metals Commonly used mineral acids are\xa0sulfuric acid,\xa0hydrochloric acid\xa0and\xa0nitric acid\xa0(they are also known as bench acids). Mineral acids range from\xa0superacids(perchloric acid) to very weak (boric acid). Mineral acids tend to be very soluble in water and insoluble in organic solvents.Mineral acids are used in many sectors of the chemical industry as feedstocks for the synthesis of other chemicals, both organic and inorganic. Large quantities of these acids – especially sulfuric acid, nitric acid, and hydrochloric acid – are manufactured for commercial use in large plants.Mineral acids are also used directly for their corrosive properties. For example, a dilute solution of hydrochloric acid is used for removing the deposits from the inside of boilers, with precautions taken to prevent the corrosion of the boiler by the acid. This process is known as descaling. |
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| 54569. |
About respiration |
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Answer» It is a process in which oxygen enters in our body and carbon dioxide is released without life is not possible 6H²O+ 6CO² -----> C6 H12 O6 + O²FORMULA OF RESPIRATION |
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| 54570. |
How can we balance chemical equation |
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Answer» We can make a chemical equation balanced by making total no of atoms of each element on both sides equal. Give equal no of atoms both sides in a chemical equation at first count the number of elements pm both sides then balance the maximum no. of atom at first and after then and so on such that the no. of atoms of each element is same in both reactant side as well as product side And we balance chemical equation by doing equal no of atom in the both side reactants side as well as product side Where is the equation |
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| 54571. |
Write 10 question from the topic nutrition of 1marks |
| Answer» 1. Name the enzyme present in salivya?2. What dose liver secrets?3. Where is bile juce stored?4. Function of villi?5. Name the products released in stomach for digestion of food?6. Function of sphincter muscle?7. Basic function of bile juice8. Function of pepsin 9. Function of mucus10. Role of Dil. HCl in stomach | |
| 54572. |
Write all activities of chapter 1st |
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Answer» Science Which subject Subject |
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| 54573. |
Characteristics of motion |
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| 54574. |
24 creat gold is eating or not ,not but why and then yes why |
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| 54575. |
What is motion..give characteristics of motion |
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Answer» Mass × acceleration Movement of any object or body is known as motion Mass into acceleration |
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| 54576. |
Give me the name of all salts with formula |
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Answer» NaNo3+Hcl→Nacl+No2+H2O in which NaCl are salr chemistry ki s.chand padh la Chemestry ki eschand m h padh le |
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| 54577. |
Explain Antioxidant with suitable example. |
| Answer» Substances that inhibit the oxidation of other molecules are called antioxidants. Free radicals are produced as a result of oxidation and these free radicals trigger a chain of chemical reactions that damage the cells. These chain reactions can be terminated by using some antioxidants such as ascorbic acid and thiols. | |
| 54578. |
Is bar magnet a permanent magnet? |
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Answer» Yes Yes |
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| 54579. |
Is solenoid a electromagnet |
| Answer» Yes | |
| 54580. |
Phototropism??? |
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Answer» Response of plants to light is called phototropism Movement through light Τropic movement of plants in respond to stimulus or stimuli is known as phototropism. Phototropism is the ability of a plant, or other photosynthesizing organism, to grow directionally in response to a light source.Hii!!? |
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| 54581. |
Plants that grow without visible movement |
| Answer» Cactus | |
| 54582. |
Animals that breathe without visible movement |
| Answer» | |
| 54583. |
Name two metals which are neither ductile or malleable. |
| Answer» Mercury and zinc | |
| 54584. |
Which has a greater resistence -a 100W bulb or a 60W bulv |
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Answer» Resistance of 60 W bulb is more than that of 100 W bulb. 60 |
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| 54585. |
The average breathing rate |
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Answer» At rest is about 15 to 18 times \xa0A person\'s\xa0respiratory rate\xa0is the number of breaths you take per minute.\xa0The normal respiration rate\xa0for an adult at rest is 12 to 20 breaths per minute. A\xa0respiration rate\xa0under 12 or over 25 breaths per minute while resting is considered abnormal. |
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| 54586. |
Define 1 kilowatt hour. |
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Answer» The 1000W are consumed electricity per hour time is called 1KWH 1 Kwh can be defined as the amount of electrical energy consumed when a 1000 watt electrical appliance is used for an hour. The unit of energy is watt. 1 Watt = 1 Joule /second. One kilowatt hour is 3.6 megajoules. It is the amount of energy converted if work is done at the rate of 1000 watts per hour. |
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| 54587. |
Name two metals which do not corode |
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Answer» Platinum and aluminium Gold and platinum |
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| 54588. |
Why acid is formed when nirogen gas mix with water |
| Answer» Excess nitrogen can harm water bodies. Excess nitrogen can cause overstimulation of growth of aquatic plants and algae. Lake and reservoir eutrophication can occur, which produces unsightly scums of algae on the water surface, can occasionally result in fish kills, and can even "kill" a lake by depriving it of oxygen. | |
| 54589. |
Can we say that environment means ecosystem?if no can you say the simple meaning of ecosystem? |
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Answer» Thanks for ur answer riya Yes |
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| 54590. |
What is the work of neutrel wire in plug |
| Answer» It give path to back current | |
| 54591. |
Insoluble bases do not have hydroxide ions does it mean we cannot classify them in term of ph value? |
| Answer» Insoluble bases generally are slightly soluble and will give some OH- ions. However, this does not give you any guide as to how much base is presentIn industry a slurry (mixture of solid and water) of lime Ca(OH)2 is used to neutralize waste acid. Lime is soluble to the extent of about 0.2%. Anything more than this is a solid plus the solution. The saturated solution has pH 12.4.Thus the pH of a lime slurry is the same for a 1%, 5%, or 10% suspension. The pH gives no indication, which is a practical issue in industry where it is used as a cheap but largely insoluble base. | |
| 54592. |
How to balance h2so4+naoh=na2so4+h2o |
| Answer» The balanced reaction is: 2NaHCO3\xa0+ H2SO4 → Na2SO4\xa0+ 2H2O\xa0+ 2CO2 | |
| 54593. |
What is larynx |
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Answer» The upper end of trachea has a voice box called larynx Larynx is the part of respiratory system which connects inferior part of pharynx with trachea. It holds vocal cords and is responsible in producing voice.It plays main role in the processes like swallowing and breathing. Larynx is a small voice box which connects the pharynx and the trachea (wind pipe). |
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| 54594. |
In our house we use 20 w ao power. Then how much power watts will be used in railways |
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Answer» 3700 horse power Indian\xa0electric locomotive\xa0come in different models. One example is the WDM-3F, delivering 3600 horsepower, which is around 2685 kW of peak\xa0power |
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| 54595. |
Formula OF Plaster of paris??? |
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Answer» Caso4 Cao Ji mast Huu Achha ????? aur batao kaise hio Nahii Ok MiL Gaya? CaSO4.½H2O Mai do kya... |
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| 54596. |
How do metal react with acid |
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Answer» Thanks Thanks Acids react with most metals and a salt is produced. But unlike the reaction between acids and bases we don\'t get any water. Instead we get\xa0hydrogen gas.This is the general word equation for the reaction: metal + acid\xa0→\xa0salt + hydrogen |
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| 54597. |
To analyze the transpiration rate with the help of 4 leaves applying vasline |
| Answer» If you cover\xa0the\xa0leaves\xa0of healthy plant with\xa0vaseline,\xa0it\xa0will block its stomata and therefore\xa0it\xa0will not remain healthy for a long time. This is because plant will not get oxygen for respiration.\xa0it\xa0will not get carbon dioxide for photosynthesis. | |
| 54598. |
Why do we use pop in making chalks |
| Answer» | |
| 54599. |
Genotypic ratio of hybrid f2 generation |
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Answer» But it is phenophytic ratio 9:3:3;1 |
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| 54600. |
A wire of 4 ohm is doubled to its length and half of diameter. What will be the new resistance |
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Answer» R1= 4ohmL1=LA1=rP1=not givenIt is of new wire, Length of wire is doubled it means 2L.It\'s diameter is half means A2=r=d/4=r/2.To find R2=? P1=not givenSo, R1/R2=p1/p2×L1/L2×A2/A14/R2=p1/p2×L/2L×(r)²/(r)²×(2)²P1 and p2,L and L2 are cancel out. 4/R2=1/2×r²/r²/4r²and r²are canceled. 4/R2=1/2×1/44/R2=1/8R2=32ohmHence, new resistance is 32ohm. We consider wire is doubled on it means to fold the length of wire. It means its length will get half and area of cross section will get doubled.∴ Let the resistance of the wire originally \'R\' of length \'L\' and area of cross-section \'A\' with resistivity of material is \'p\',ThenR = p l/A = 4ΩNow, for new arrangement,p\' = pl\' = l / 2A\' = 2AThus,R\' = p\' l\'/A\' = p (l /2) ÷ 2A = !/4 (p l / A) = 1/4R = 1/4 × 4 = 1Ω.\xa0 |
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