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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.
| 54701. |
Explain ecosystem and it\'s type with one example |
| Answer» All organisms such as plants, animals, microorganisms and human beings interact with the non-living physical surroundings in an area called as the ecosystemThe abiotic components of ecosystem are light, temperature, rainfall, wind, soil etcAn ecosystem which is formed due to the result of interactions between organisms and the environment is natural ecosystem.An ecosystem which is created by human beings and did not exist naturally is artificial ecosystem.Example- Forests, ponds are natural ecosystem and gardens, crop fields are artificial ecosystem. | |
| 54702. |
What is the basic function of neurone |
| Answer» Basic function of neurone is to purify blood and absorb important material from blood | |
| 54703. |
Why are few metabolic process termed as life process? |
| Answer» They need to be done every single moment even when we are not doing anything | |
| 54704. |
How do carbohydrates protein and fats get digested in human being |
| Answer» Digestion of carbohydrates: Starch is digested in the mouth by salivary amylase. Other forms of carbohydrates are digested in the small intestine.Starch + Salivary Amylase → SucroseMaltose + Maltase → GlucoseLactose + Lactase → Glucose + GalactoseDigestion of Proteins: Partial digestion of protein takes place in the stomach by gastric enzyme pepsin. Further digestion of protein happens in the small intestine.Protein + Pepsin → Peptone + Proteose(Protein + Peptone + Proteose) + (trypsin + chymotrypsin) → DipeptidesDigestion of Fat: Fat is at first emulsified by bile and then its digestion happens in the small intestine.Fat + Lipase → Fatty acids + Glycerol | |
| 54705. |
When sperm is realised in how many days sperm duct is fulfilled |
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Answer» How you can elaborate? Their answer is 2 days Approx 3 days |
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| 54706. |
Coerosion |
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Answer» Corroison is a process in which metals are eaten up by atmospheric action Corrosion is the deterioration of a metal as a result of chemical reactions between it and the surrounding environment. ... A reaction in which metal reacts with air,water and chemical present in atmosphere this process is called corrosion. The formation of undersired layer of metal oxide or metal hydroxide is known as corrosion.. When a metal is attacked by substances around it such as acids, moisture etc., it is said to corrode and this process is known as corrosion. Corrosion is a natural process, which converts a refined metal to more chemically-stable form, such as its oxide, hydroxide, or sulfide. It is the gradual destruction of materials (usually metals) by chemical and/or electrochemical reaction with their environment. |
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| 54707. |
State the sign convention used to measure length of image and object |
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Answer» Thanks a lot \tSign is taken as + (positive) behind the spherical mirror. For example if an image is formed behind the mirror, the distance of image is taken as + (positive) from pole along the principal axis.\tThe height of is taken as + (positive) above the principal axis and taken as – (negative) below the principal axis.\tSign is taken as – (negative) from pole of a spherical mirror towards object along the principal axis. This means sign is always taken as – (negative) in front of a spherical mirror. For example; the distance of object is always taken as – (negative) in case of both types of spherical mirror, i.e. concave and convex mirrors. |
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| 54708. |
Name the mode of nutrition in roundworm and plasmodium |
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Answer» Round worms -Parasitic nutrition Plasmodium - Parasitic nutrition a) Round worms are nematode and most of them are parasitic worms. They have a scientific name of Phylum Nematoda.The mode of nutrition of round worms is parasitic.b) Plasmodium is a parasite too and belongs to the Protista kingdom. They cause diseases like malaria in humans and others.The mode of nutrition of plasmodium is also parasitic.\xa0 Parasitic |
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| 54709. |
Write the chemical formula of rust |
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Answer» 2Fe2O3.xh2O Iron when reacted with both water and oxygen which present in air (moist air), corrodes. Its silvery colour changes to a reddish-brown, because hydrated oxides are formed which is commonly called as rust. Reaction showing formation of rust when reacted with water in presence of oxygen (atmosphere).\xa04Fe + 3O₂+ XH₂O → 2Fe₂O₃.XH₂O |
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| 54710. |
What is rensidity |
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Answer» Oxidation of food cotaning fat and oil resulting in an unplesant smell called rancidity Rancidity : It is generally observed that when oily food items are kept for longer time they start to smell very bad. This happens because the fats and oils get oxidised and hence they become rancid that changes their taste and smell.To avoid such spoilage antioxidants are added to oily food items. Food items can also be prevented from getting oxidised by keeping them in air tight packets. Due to this reason packets of chips are flushed with gas such as nitrogen that acts as antioxidant and prevents spoilage of the fried chips. The aerial oxidation of fats and oils present in food marked by unpleasant smell and taste is termed as rancidity... Rensidity is a process by which the metals eaten up or ending gradually. |
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| 54711. |
By phenophthalein and methyl orange how to came we know that it is acid or base |
| Answer» Phenolphthalein -It gives pink or red colour in basic medium but it is colourless in acidic medium.Methyl orange -It gives red colour in acidic medium and yellow colour in basic medium. | |
| 54712. |
What kind of chemical reaction respiration is ?why? |
| Answer» Exothermic..Bcz energy is released during respiration.. | |
| 54713. |
Why sodium and potassium burnt when we put it into water |
| Answer» They reacts vigorously with water to liberate hydrogen gas and that hydrogen gas starts burning due to heat released and we see sodium and potassium burning but actually the hydrogen gas is burning at that time. | |
| 54714. |
Why all alkalies are base but not all base are alkalies? |
| Answer» A base is a substance that reacts with acids and neutrlize them. Some bases are soluble in water some are insoluble. Soluble bases are called alkalies.For example copper oxide does not dissolve in water. Hence it is called as base.Definition of an alkali: A base that is soluble in water is called an alkali.In general hydroxides of alkali metals and alkaline earth metals are considered as alkalies.Example: KOH (aq) → K+(aq) + OH- (aq)Ca(OH)2(aq) → Ca+2 (aq) + OH- (aq)Therefore, it is said that all alkalis are bases, but all bases are not alkalies. | |
| 54715. |
How can you dertermine focal length of convex lens experimentally ? |
| Answer» Determination of Focal Length of a Convex Lens by Distant Object Method\tMount the convex lens and an object needle on their respective uprights. place the upright carrying the object needle in front of the lens on an optical bench.\tAdjust a plane mirror at the back of the lens, such that its plane is vertical and perpendicular to the axis of the lens.\tMove the needle forward and backward and adjust its position to get real and inverted image of the needle formed by the lens, after reflection from the plane mirror.\tWhen the tip of the image in the plane mirror coincides with the tip of the optical needle, i.e., focus of the lens. The distance between the optical needle and the lens gives the focal length of the lens.\tThe rays proceeding from the object at the principal focus after refraction through the lens are rendered parallel. These parallel rays are reflected from the plane mirror and after refraction through the lens, meet at the focus.Determination of Focal Length of a Convex Lens by Auxillary Method\tPlace a convex lens on a plane mirror kept on the horizontal surface of the vertical stand and arrange the a pin horizontally in the clamp such that its tip is vertically above the centre of the lens.\tAdjust the height of the pin until it has no parallax with its inverted image when seen from vertically above the pin. To check for parallax, the eye is moved side wards. If the pin and its image shift together, then parallax is moved.\tMeasure the distance x of the pin from the lens and the distance y of the pin from the mirror, using the plumb line and a\xa0meter scale.\tCalculate the average of these two distances i.e., x and y, that gives the focal length of the lens.\xa0\tFocal length of the convex lens, f = (x + y) / 2\xa0\tTake three different observations and find the mean focal length of the convex lens. | |
| 54716. |
What are ionic compounds and covalent compounds? |
| Answer» Ionic compounds:1. Ionic compounds are formed by the transfer of electrons that are positively and negatively charged.2. In an ionic compound, bonding involves a metal and nonmetal.3.Ionic compounds are more soluble in water.4. Ionic compounds have definite shape.5. Ionic compounds are the good conductor of electricity.Covalent compounds1. Covalent compounds are formed by sharing the electrons.2. In covalent compound, bonding involves is between nonmetals.3.Ionic compounds are more soluble in water than covalent compounds.4. Covalent has no shape.5. Covalent compounds are the bad conductor of electricity.\xa0 | |
| 54717. |
Explane corrosion in different metal with advantage and dadvantage |
| Answer» Corrosion is the process of being corroded or damaged causing to the metals.Disadvantages-1. weakens the metal2. Loss of contamination and deterioration of appearance.Advantages-1. Surface corrosion forms an oxide layer\xa0 | |
| 54718. |
What happens if someone controls his pineal gland? |
| Answer» Pineal gland is situated as a stalk - like organ on the roof of third ventricle. This gland is considered as a vestigial organ. It is well developed in children, shrinks after about 7th year and is reduced to a little knot of tissue after puberty. It is reported that it secretes a hormone called melatonin which influences skin colouration and is not a protein. It is antigonadial as it may delay sexual development and may reduce reproductive activity. | |
| 54719. |
Siemens current having magnitude as well as direction but also it is a vector quantity .why? |
| Answer» No. It is a scalar one | |
| 54720. |
Why electric is vector quantity? |
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Answer» Because the direction of flow of charge is fixed . Since electric current is having magnitude as well as direction |
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| 54721. |
Why a freely suspended magnet always points in the north South direction |
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Answer» \xa0A freely suspended magnet always points towards geographical north and geographical south directions because of the magnetism of the earth. It is assumed that a huge bar magnet is placed at the centre of the earth that causes a freely suspended magnet to align in the directions of north and south poles. This suggests that the Earth itself behaves as a magnet which causes a freely suspended magnet (or magnetic needle) to point always in a particular direction: North and South. ... The South Pole of the Earth\'s magnet is in the geographical North because it attracts the North Pole of the suspended magnet and vice versa. go |
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| 54722. |
All green plants are |
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Answer» Due to cholorophyll Autotrophs Autotrophs. They are popularly called as producers as the prepare their own food by their own mechanism called PHOTOSYNTHESIS. Autotrophs |
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| 54723. |
Give some easy topic on physics |
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Answer» Sai and jabra fan are wrong kundan yadav is correct EnergyForceLightMagneticWorkEtc VECTORS Fundamental ConceptsMechanicsKinematics: Objects in MotionFluid MechanicsThermodynamicsElectricity and MagnetismOscillations and WavesAtomic, Nuclear, and Particle Physics |
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| 54724. |
What is meant by redox reaction? |
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Answer» The pair of oxidation and reduction take place similar both on same time This have reduction nd oxcillation took place An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. An oxidation-reduction reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron. In redox reaction both reduction and oxiation take place |
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| 54725. |
Commerce is best stream for class 11 or not? |
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Answer» Yaa Hmm Every stream is best...!! It depends on yur interest..!! Yes Ya..... |
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| 54726. |
What is electrolysis decomposition? Explain clearly.. |
| Answer» Electrolysis decomposition means breaking in ions when electricity is passed in a solution.Example:When we pass electricity in a solution of Na-Cl and water NaCl is broken in ions. Or\xa0electrolysis\xa0of water is the decomposition of water into oxygen and hydrogen gas due to an electric current being passed through the water. | |
| 54727. |
Whai is series parallel? |
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Answer» In parallel if one electrical appliance stops working due to some deffect then all other electrical appliances keep working normally.in parallel all the electrical appliances gets the same voltage. In series if one electrical appliances stops working due to some deffect the all other electrical appliances also stop working.this is disadvantage for domestic wiring Series: means all if some appliance is work proporly nd then if one appliance is defect due tu some reason then rest appliance doest not Nd in the case of parallel work is doing its opposite. And all the appliances is controlled by more than one switch are called parallels combinatio. When all the appliances is controlled by one switch is called series combination. |
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| 54728. |
What odour does cloth rubbed with onion give in an acidic and basic solution?? |
| Answer» Onion smells like an onion when it is dipped in an acidic solution because the smell causing component of onion is an acid but when it is reacted with base, it forms salt and hence, looses its smell. | |
| 54729. |
Which of the following is not an alkali (a) koh (b)naoh (c)al(oh)3 (d)ca(oh)2 |
| Answer» All alkali but alho3 show both acidic as well as basic so this is ampotheric | |
| 54730. |
What is the difference between respiration in plants and animals? |
| Answer» In plant they inhaledco2 and human inhaledo2. Plant respirate through the help of stomata and human respirate through the help of alveoli. | |
| 54731. |
Unit of molecule |
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Answer» 1mole of molecule=6.022into10kiratio power 23 Mole Mole |
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| 54732. |
Practical topic and practical performance step please tell me |
| Answer» | |
| 54733. |
Q2. What are the three essentials of a chemical equation? |
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Answer» Balancingis most important,physical state,type of reaction Physical change, heat change and condition |
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| 54734. |
Why plants are considered as a living thing? |
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Answer» Bcoz usme bhi sare metabolizam activities hoti h Bcoz they perform. Life processess like nutrition , digestion ,respiration , transportation ,excretion etc etc etc |
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| 54735. |
it is good to be a vegetarian than non-vegetarian.why |
| Answer» Dhhnfscgesssexghj | |
| 54736. |
Is it good to be vegetarian than non-vegetarian.why? |
| Answer» | |
| 54737. |
= One light year equal to how many kilometer ? |
| Answer» It is actually 2,99,792 Km/second but it is taken as 3,00,000 Km/second for convenience. | |
| 54738. |
What is radox reactiom |
| Answer» The chemical reaction in which both oxidation and reduction takes place is called radox reaction | |
| 54739. |
Father of ohm\'s law |
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Answer» Georg simon ohm Georg simon ohm |
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| 54740. |
formula of ethonal |
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Answer» Explain pleas ethonal ya ethanol Ch3ch4oh |
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| 54741. |
Why pop should be stored in a moisture proof cantainer? Explain why? |
| Answer» A plaster of paris in contact of moisture(water)change to solid hard mass gypsum .therefore it get wasted | |
| 54742. |
Why do copper vessel lose shine when exposed to air? |
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Answer» Copper react with air which forms a layer on its surface of copper oxide Due to corrosion |
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| 54743. |
Name the part of small intestine and explain their functions |
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Answer» Tell me name plz There are many parts of small intestine |
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| 54744. |
I can get all question papers from last 10 uears |
| Answer» | |
| 54745. |
WHY FOCAL LENGTH IS NEGATIVE IN CONCAVE MIRROR ? |
| Answer» | |
| 54746. |
Why H2SO4 is a acid but not H2O |
| Answer» Because H2o is formula for water and it is not sour in taste and do not change blue litmus red and so on | |
| 54747. |
What is citric acid |
| Answer» Citric acid is present in orange lemon | |
| 54748. |
What is peristeltis movement |
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Answer» The contraction and expandation of food pipe in throat is known as peristaltic movement The special movement of food in esophagus is called ............. |
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| 54749. |
Diaphram is elastic give reason |
| Answer» Due to its contraction | |
| 54750. |
Elaborate rectangular glass slab ? |
| Answer» | |