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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.
| 601. |
Name one mineral acid which is weak and write it\'s molecular formula |
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Answer» Please revert if my answer is rightCarbonic Acid is a mineral acid as well also a weak acidFormula :- H²CO³ Acetic acid CH3COOH |
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| 602. |
What is the human a large intestine |
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Answer» This is thick, long around 5 feet in length. It absorb the mineral from food after food made waste of our body Large IntestineThis is a thick, long tube measuring around 5 feet in length. It is present just beneath the stomach and wraps over the superior and lateral edges of the small intestine. It absorbs water and consists of bacteria (symbiotic) that support the breakdown of wastes to fetch small nutrients. |
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| 603. |
What is commutator?? |
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Answer» Hi? A commutator is a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit. It consists of a cylinder composed of multiple metal contact segments on the rotating armature of the machine.\xa0On DC and most AC motors the\xa0purpose\xa0of the\xa0commutator\xa0is to insure that the current flowing through the rotor windings is always in the same direction, and the proper coil on the rotor is energized in respect to the field coils. |
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| 604. |
What is oxidation and reduction reaction. |
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Answer» Addition of oxygen and removal of hydrogen is called oxidation reaction.Addition of hydrogen and removal of oxygen is camper reduction reaction. Addition of oxygen and removal of hydrogen is called oxidation .Addition of hydrogen and removal of oxygen is called reduction Oxidation:- it is the process of addition of oxygen to a substance or removal of hydrogen from a substance.Reduction:- it is the process removal of oxygen from a substance or addition of hydrogen to a substance |
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| 605. |
What is the meaning of implications. |
| Answer» The definition of\xa0implication\xa0is something that is inferred. An\xa0example\xa0of\xa0implication\xa0is the policeman connecting a person to a crime even though there is no evidence.\xa0Cost implications\xa0refer to the amount of time, money, and energy required to obtain, produce and maintain a product or service.\xa0Research implications\xa0basically refer to impact that your\xa0research\xa0might have on future\xa0research\xa0or policy decision or the relevant field of interest of your\xa0study. ... For example, a clinical\xa0study\xa0might have\xa0implications\xa0for cancer\xa0research\xa0and might recommend against the use of a particular hazardous substance. | |
| 606. |
Name any two metals which are soft and be cut with an ordinary knife |
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Answer» Sodium and potassium (Na&K) Sodium and potassium Sodium and potassium (Na And K) Sodium and potassium Sodium & Potassium. |
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| 607. |
What will happen if limewater is passed through co2 gas? |
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Answer» Thanks There is an exothermic reaction takes place with hissing sound and both of this combined together to form Ca(OH)2 hence the reation is known as combination reation. Carbon dioxide\xa0reacts with\xa0limewater(a solution of calcium hydroxide, Ca(OH)\xa02),\xa0to\xa0form a white precipitate (appears milky) of calcium carbonate, CaCO\xa03. Adding more\xa0carbon dioxideresults in\xa0the\xa0precipitate dissolving\xa0toform a colourless solution of calcium hydrogencarbonate. |
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| 608. |
I wanna know important ques of science |
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Answer» Go to brainly Search from google Go to learn cbse.com there u will find important questions |
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| 609. |
Write the balanced equation when Sulphur dioxide is mixed in water.. |
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Answer» So2 +H2O ~~~H2SO4 A N S W E RWhen sulphur dioxide is dissolved in water it forms sulphurous acid.\xa0SO2\u200b+H2\u200bO⟶H2\u200bSO3\u200b |
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| 610. |
Describe electric motor working construction and princple |
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Answer» Thanks meghna for such a good description Electric Motor:An electric motor is a rotating device that converts electrical energy to mechanical energy. Electric motor is used as an important component in electric fans, refrigerators, mixers, washing machines, computers, MP3 players etc. An electric motor consists of a rectangular coil ABCD of insulated copper wire. The coil is placed between the two poles of a magnetic field such that the arm AB and CD are perpendicular to the direction of the magnetic field. The ends of the coil are connected to the two halves P and Q of a split ring. The inner sides of these halves are insulated and attached to an axle. The external conducting edges of P and Q touch two conducting stationary brushes X and Y, respectively. Current in the coil ABCD enters from the source battery through conducting brush X and flows back to the battery through brush Y. Notice that the current in arm AB of the coil flows from A to B. In arm CD it flows from C to D, that is, opposite to the direction of current through arm AB. On applying Fleming’s left hand rule for the direction of force on a current-carrying conductor in a magnetic field. The force acting on arm AB pushes it downwards while the force acting on arm CD pushes it upwards. Thus the coil and the axle O, mounted free to turn about an axis, rotate anti-clockwise. At half rotation, Q makes contact with the brush X and P with brush Y. Therefore the current in the coil gets reversed and flows along the path DCBA. A device that reverses the direction of flow of current through a circuit is called a commutator. In electric motors, the split ring acts as a commutator. The reversal of current also reverses the direction of force acting on the two arms AB and CD. Thus the arm AB of the coil that was earlier pushed down is now pushed up and the arm CD previously pushed up is now pushed down. Therefore the coil and the axle rotate half a turn more in the same direction. The reversing of the current is repeated at each half rotation, giving rise to a continuous rotation of the coil and to the axle.\xa0The commercial use of motor: \t\tAn electromagnet in place of permanent magnet.Large number of turns of the conducting wire in the current-carrying coil.A soft iron core on which the coil is wound. \t\tThe soft iron core, on which the coil is wound, plus the coils, is called an armature. |
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| 611. |
Why Bishnoi community is an example for conservation of forest and wildlife? |
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Answer» ANSWERBishnoi is a tribal community in Rajasthan. For Bishnoi people, protecting wildlife is a religion. A well-remarked case study for the conservation of forests by Bishnoi people is of Amrita Devi Bishnoi who sacrificed her life for protecting \'Khejri\' trees. She literally hugged the tree and dared King\'s men to cut her first before the tree. The King\'s men didn\'t bother about her and cut down trees along with her. 363 other Bishnoi people followed her and sacrificed their lives for the protection of sacred \'khejrali\' forest. In the memory and honour of Bishnoi people who sacrificed their lives for the protection of forests, Amrita Devi Bishnoi Wildlife Protection Award was initiated.\xa0 Conservation of forests and wildlife is necessary to protect the biodiversity. This is important because loss of biodiversity leads to ecological imbalance. But any conservation effort for forest and wildlife must keep the interests of all stakeholders in mind. |
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| 612. |
What is minimum restance which can be made using 5 resistors each of resistance 1/5 ohm |
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Answer» 25 25 ohm 25 When resistors are connected in parallel, the supply current is equal to the sum of the currents through each resistor. In other words, the currents in the branches of a parallel circuit add up to the supply current.\xa0Also, they have the same potential difference across them. In other words, any components in parallel have the same potential difference across them. And, the total resistance will always be lesser than the least resistance in the circuit.\xa0The total resistance is calculated as 1/Req = 1/R₁ + 1/R₂ + 1/R₃ + 1/R₄ + ....... + 1/Rn\xa0 ∴ for finding minimum resistance , we have to join all resistors in parallel.So , 1/Req = 1/(1/5) + 1/(1/5) + 1/(1/5) + 1/(1/5) + 1/(1/5)1/Req = 5 + 5 + 5 + 5 + 5 = 25Req = 1/25 ΩHence , minimum resistance = 1/25 Ω
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| 613. |
Why octave\'s law of triad discarded ??? |
| Answer» \xa0Newland’s law of Octaves explains when elements are arranged by increasing atomic mass, the properties of every eighth element starting from any element are a repetition of the properties of the starting element.\xa0It was discarded because:1. This classification did not work with heavier elements,i.e. those lying beyond calcium.2. Newland adjusted two elements cobalt and nickel in the same slot and these were placed in the same column as flourine , chlorine, and bromine which have different properties than these elements.3. Iron, which resembles cobalt and nickel in properties has been placed far away from these elements. | |
| 614. |
Explain what is chemical reaction |
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Answer» The transformation of one substance into new substance is called a chemical reaction The process involving chemical changes is known as chemical reaction. Chemical reactions- The transformation of\xa0chemical\xa0substance into a new\xa0chemical\xa0substance by making and breaking of bonds between different atoms is known as\xa0Chemical Reaction. |
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| 615. |
What will be the product of the following reaction ? HCL+NaOH |
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Answer» Nacl and H2O sodium chloride( NaCl)and H2O Nacl and water formed during reaction When hydrochloric acid\xa0(HCl)\xa0and sodium hydroxide\xa0(NaOH)\xa0react with each other, neutralization reaction takes place and there is the formation of salt (sodium chloride\xa0NaCl) and water.\xa0The acid releases hydrogen ion\xa0H+\xa0which combines with the hydroxyl ion\xa0(OH−)\xa0released by the base, to form water. The anion of the acid and cation of the base combine together to form the salt.\xa0HCl+NaOH→NaCl+H2\u200bO\xa0 |
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| 616. |
Explain about transportation in human beings? |
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Answer» |
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| 617. |
What is semipermeable membrane |
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Answer» Semipermable which allows the food transfer from one cell to other A semipermeable membrane is a layer that only certain molecules can pass through. Semipermeable membrane is a type of biological or synthetic, polymeric membrane that will allow certain molecules or ions to pass through it by diffusion |
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| 618. |
Why adom apple is prominent in men not in women |
| Answer» Both males and females develop Adam\'s apples, but they tend to stick out more in males than in females. This is because the male larynx generally grows bigger and faster during puberty. A larger larynx explains why males tend to have deeper and louder voices than females | |
| 619. |
What is modern qvantum theory of light |
| Answer» \xa0Quantum theory of light is based on the idea that light is emited as discrete bundles or packets of energy. These packets are called quanta, and the particle of light was given the name photon.The energy of one quantum is given by, hν , where h is the Plank\'s constant and ν is the frequency. | |
| 620. |
Mucus help in |
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Answer» Hi Hlo Hi Mucus protect the inner lining of the stomach from the HCl Mucus protect the inner lining of the stomach from the HCl |
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| 621. |
Boilers are made up of |
| Answer» CopperCopper does not react with cold water, hot water or steam however iron reacts with steam. If water tanks are made of steel which is an iron alloy than iron would react with steam formed from hot water.3Fe+4H2\u200bO→Fe3\u200bO4\u200b+4H2\u200b | |
| 622. |
Name the element which react with HNO3 to give hydrogen |
| Answer» Manganese and magnesium | |
| 623. |
Name the element which react with hot water |
| Answer» magnesium (Mg)slow\xa0reaction\xa0with cold\xa0water, vigorous with\xa0hot water | |
| 624. |
did ohm is also the answer of SI unitof resistivity |
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Answer» No S.I. unit of resistivity is Ohm metre No No,because it\'s S.I unit is ohm-metre No no ohm is the SI UNIT of resistance only.The SI unit of resistivity is Rho. |
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| 625. |
What is pristaltic movement |
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Answer» Oesophagus is muscular tube wall which shows alternate wave due to the contraction and expansion this movement called peristaltic movement . It helps to push food in the stomach from oesophagus Oesophagus is the mascular tube which shows alternate waves due to the contraction ana expansion this movement is called peristaltic movement this movement push the food in the stomach from the oesophagus the contraction and relaxation of the food pipe or oesophagus to push the food towards the stomach. such movement is khan own as peristaltic movemen Peristalsis\xa0is primarily found throughout the gastrointestinal tract and is the involuntary propulsion of food. This\xa0movement\xa0begins in the pharynx, once a food bolus is formed, and ends in the ****. Along with segmentation or mixing of food,\xa0peristalsis\xa0is an essential part of providing the body with nutrients.? |
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| 626. |
The clouds are made up of? |
| Answer» Clouds\xa0are created when water vapor, an invisible gas, turns into liquid water droplets. These water droplets form on tiny particles, like dust, that are floating in the air. | |
| 627. |
Name one or two plant name which release carbon dioxide in night time? ?? |
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Answer» Mostly all the trees releases co2 at night but u talk about name so it is highly consider the Peepal tree,neem,banyan trees,etc Thanks everyone Aloe vera and Tulsi. Plant name which release carbon dioxide in the night time\tAloe Vera\tSnake Plant\tPeepal\tOrchids Peepal and neem |
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| 628. |
What is an homologous series ? |
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Answer» Homologous series All the carbon compound have similar structure . Show similar properties and they are put together in the same group or series in which the successive compound differ by CH group--- The general formula fo the homologous series is : Cnh2n+2 Homologous Series\tA series of carbon compounds in which same functional group substitutes the hydrogen atom is called a homologous series.\tThese compounds have similar chemical properties due to the addition of same kind of functional group throughout the chain.\tFor example, the series of alkanes i.e. Methane, ethane, propane, butane and so on is a homologous series.\tSimilarly the series of alkene and alkynes also forms homologous series.Homologous series of alkenes are as follows: |
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| 629. |
What is the ph of water?? |
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Answer» Hru? Vikas Hlo Dono hi 7 ph value Ph is a measure of how acidic/basic water is. |
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| 630. |
how is conductor and insulator different? |
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Answer» Conductor: Which allow electricity to pass .Ex- Aluminium ,Silver.Insulator:Which do not allow electricity to pass.Ex- wood ,plastic. In a\xa0conductor, electric current can flow freely, in an\xa0insulator\xa0it cannot. Metals such as copper typify\xa0conductors, while most non-metallic solids are said to be good\xa0insulators, having extremely high resistance to the flow of charge through them. ... Most atoms hold on to their electrons tightly and are\xa0insulators. \tConductorsInsulatorsThey allow electricity to pass through them.They do not allow electricity to pass through them.They have electric charges free to move.They have electric charges which are not free to move.When some charge is transferred to a conductor, it readily distributes over the entire surface.When some charge is transferred to an insulator, it remains at the same place over the surface.Most metals are conductors.Most non-metals are insulators.\t Hlo |
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| 631. |
What is the full form of chemical reaction |
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Answer» There is no full firm of chemical reaction ⁉️⁉️ NHO3+Ca (OH)2= NHCO3+H2O Pagal h kya be Full form? |
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| 632. |
What is pH? What is the use of pH. |
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Answer» Check hydrogen concentration pH is defined as the measure of hydrogen ion concentration. It is used for measuring the acidity or alkalinity of a solution. Hope It Helps You?✌ Use of pH Measuring the acidity or alkalinity pH defined as Measure Hydrogen ion concentration pH is defined as the measure of hydrogen ion concentration which is used for measuring the acidity or alkalinity of a given solution.Following is the equation that is used for calculating the pH:pH = -log[H+]Values of pH\tThe range of the pH scale varies from 0 to 14\tSolutions having a value of pH ranging 0 to 7 on pH scale are known as acidic and for the value of pH ranging 7 to 14 on pH scale are called basic solutions.\tSolutions having the value of pH equal to 7 on pH scale are termed as neutral solutions. |
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| 633. |
The acid found in mango |
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Answer» Citric acid Citric acid Citric acid Citric What would be the consequences of a deficiency of haemoglobin in our bodies |
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| 634. |
Name the unit of electrical resistance and give its symbol? |
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Answer» Ohm The\xa0ohm\xa0(symbol: Ω) is the SI derived unit of electrical resistance, named after German physicist Georg Simon\xa0Ohm . The electrical Resistance is given by "Ohm".\xa0And symbol os Ohm is\xa0Ω Ohm. Ohm |
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| 635. |
Name a circulatory fluid inthe human body other than blood????? |
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Answer» Lymph Apart from blood, lymph flows through lymphatic vessels. Lymph destroys the invading microorganisms and foreign particles in the lymph nodes. Blood is red coloured whereas lymph is colourless. Tissue fluid or Lymph Plasma |
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| 636. |
Name a circulatory fluid in the human body other than blood |
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Answer» Lymph Lymph |
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| 637. |
Define resistivity ? |
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Answer» Resistivity is the physical property of a particular substance which is having particular dimensions.Resistivity is only proportional to the nature and temperature of the particular material.Symbol is\xa0ρ Resistivity is the physical property of a particular substance which is having particular dimensions.Resistivity is only proportional to the nature and temperature of the particular material.Symbol is\xa0ρ the property of conductor to oppose the electric current in an electric circuit |
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| 638. |
The breakdown of priority to give carbon dioxide water and energy takes place in |
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Answer» Mitochondria Mitochondria The breakdown of pyruvate to give carbon dioxide, water and energy takes place in mitochondria |
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| 639. |
The autotrophic mode of nutrition required |
| Answer» The mode of nutrition in which the organisms prepare their own food is called autotrophic mode of nutrition. The materials needed for this mode of nutrition are carbon dioxide, water, sunlight and chlorophyll from their surroundings. | |
| 640. |
in plant are responsible for |
| Answer» Xylem tissues include tracheids, vessels, fibres and parenchyma and serve in the ascent of sap/water and minerals. Phloem tissues is a composed of four elements namely, sieve elements, companion cell, phloem fibres and phloem parenchyma and serve in translocation of organic nutrients. Transfer RNA (tRNA) serve as carrier RNA and transports amino acids from cell pool to the mRNA bound to the ribosome where the protein is being synthesized. Haemoglobin molecule contains four polypeptide chains and four heme prosthetic groups. It serves as a carrier of oxygen gas. | |
| 641. |
What is the refractive index of water |
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Answer» It is reciprocal . refractive index of air wrt water is 1.0/1.33 = 0.752 I don\'t know mayur MADHARCHOD |
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| 642. |
WhydoesaRayoflightbendwhenittravelsfromonemediumtoanother. |
| Answer» | |
| 643. |
What are Carples? |
| Answer» In tetrapods, the carpus is the sole cluster of bones in the wrist between the radius and ulna and the metacarpus. The bones of the carpus do not belong to individual fingers (or toes in quadrupeds), whereas those of the metacarpus do. The corresponding part of the foot is the tarsus. | |
| 644. |
What is translocation. |
| Answer» Transportation of food from leaves to different part of the plants is called translocation | |
| 645. |
Explain transport of food and other substance for Pharma |
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Answer» No explain it fof 5 marks in simple way Chapter 1 notes |
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| 646. |
Explain transport of water |
| Answer» Water transport\xa0also occurs at the cellular level, as individual cells absorb and release\xa0water, and pass it along to neighboring cells.\xa0Water\xa0enters and leaves cells through osmosis, the passive diffusion of\xa0water\xa0across a membrane. | |
| 647. |
Transportation in plant explain for a 5 marks |
| Answer» TRANSPORTATION IN PLANTSSoil is the natural and richest source of raw material for plants.Raw materials like nitrogen, phosphorous and other minerals are absorbed by plants from soil by roots.Plants absorb water and minerals from soil by roots and transport to the leaves.As the distance between roots and leaves is large, diffusion is not sufficient to provide raw materials to leaves and energy to roots.Plants use slow transport system but large as required in tall plants to transport energy from leaves and raw materials form roots.A group of special cells forming vascular tissue transport water and nutrients to all the cells of the plants.Two types of vascular tissues are xylem and phloem.Xylem transports water and minerals obtained from the soil.Phloem transports products of photosynthesis from the leaves to other parts of the plant.Vessels, tracheids of the roots, stems and leaves are connected to form a continuous system in xylem cells to transport water to all the parts of the plants.Cells in the roots which are in contact with the soil take up ions which creates a difference of concentration between the roots and the soil and therefore water moves to the roots to eliminate the difference.Water is moved into xylem of roots and from where it is pushed upward.Plants use different mechanisms to pull water upwards through xylem like-\tWater which is lost through stomata is replaced by water absorbed by the roots.\tEvaporation of water from leaf creates a suction force which pulls water.The loss of water in the form of water vapor is calledImportance of transpiration-\tRegulates temperature.\tHelps in absorption of water and upward movement of water and minerals.When stomata are open during the day, large amount of water is lost and thus upward movement of water also becomes more.Phloem transports soluble products of photosynthesis, amino acids, and other substances.The transport of soluble products of photosynthesis is called\xa0translocation.The substances are transported to the storage organs of roots, fruits and seeds.The translocation takes place in the sieve tubes with the help of adjacent companion cells.The movement of substances is bidirectional i.e both upward and downward.Energy from ATP is utilized for translocation.Materials like sucrose move to phloem using energy, increasing the osmotic pressure of the tissue causing water to move and materials in the phloem to tissues according to the plant’s needs.Example- when the buds grow t | |
| 648. |
What is lymph explain |
| Answer» It is an integral part of our body it takes the waste or dead cell and collect it and make a pimple like structure and pore yellow like ugly thing( peep) in hindi | |
| 649. |
What happen if this system of tubes develop a leak |
| Answer» The blood clots if conducting tubes of a circulatory system develops a leak. The platelets will increase, which will minimize the leakage. Due to this, the inactive thrombin will become the active one in the presence of thromboplasm. Moreover, this active thrombin will convert the inactive fibrinogen into the active fibrin and it results with a clot. The problem is that if the person doesn’t develop with a blood clot, then the medical care is required, otherwise this can lead to death. | |
| 650. |
Explain the tubes blood cell |
| Answer» The\xa0blood\xa0vessels are the components of the circulatory system that transport\xa0blood\xa0throughout the human body. These vessels transport\xa0blood cells, nutrients, and oxygen to the tissues of the body. They also take waste and carbon dioxide away from the tissues. | |