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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.
| 51051. |
Difference between combination reaction and decomposition reaction |
| Answer» #COMBINATION *It combines the reactants and forms product . *It requires 2 or more than 2 substance to form product. *eg - Mg + O2 = MgO#DECOMPOSITION *In this, a single reactant breaks into two products. *It requires only substance *eg- CO2 =CO +O2 | |
| 51052. |
Why are water universal solvent |
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Answer» Water is capable of dissolving a variety of different substances which is why it is a good solvent and it is known as universal solvent because it dissolves more substances than any other liquid. This is essential for survival of all life on earth. Water is a universal solvent because most of the substances can dissolve in it |
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| 51053. |
Uii |
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| 51054. |
Whar is a chemical reaction? |
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Answer» Chemical reaction is the process by which to or more substance combine to form new substance with different propertiesEg. 2H2+o2. - 2h2o Chemical reactions are those reactions in which 2 or more substance chemically combined each other to form new substance .....For eg. 2Mg+O2 → 2MgO The reaction in which chemical changes take place |
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| 51055. |
How to balance equation. |
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Answer» For eg. H2 + O2 → H2O....Here no.of atoms in lhs...for hydrogen is 2 and oxygen is also 2....but in RHS no of atom in hydrogen is 2 but in oxygen it is only 1..so by balancing it become..2H2+O2→ 2H2O......In this no of atom in both side us equal...In LHS- H- 4, O-2...SAME IN RHS...H-4, O-2 To balance a chemical equation, start by writing down the number of atoms in each element, which is listed in the subscript next to each atom. Then, add coefficients to the atoms on each side of the equation to balance them with the same atoms on the other side |
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| 51056. |
what is the site of carbohydrate digestion in human digestive system |
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Answer» Small intestine The digestion of carbohydate takes place in small intestine.In the smalll intestine pancreas release intestinel enzymes like amylase which helps in the digestion of carbohydrate. |
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| 51057. |
What is reCtum and what is the work of it |
| Answer» Rectum is a part where the waste material is store in large intestine. Its present in the end of large intestine.Its work to store the waste material. | |
| 51058. |
What happens to the area of cross section when the resistance is tripled |
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Answer» The area of cross section of a conductor is inversly proportional to the resistance.Therefore when resistance is tripled, area of cross section becomes 1/3 1/3 |
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| 51059. |
What happens to the resistance when the area of cross section is is doubled |
| Answer» Then resistance will be half | |
| 51060. |
Find the valency of carbon |
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Answer» 4 4 Atomic number of carbon is 6.Hence it\'s valency is 8-6=2.... |
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| 51061. |
What is the combination reaction |
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Answer» The reaction in which two or more substance react to form a product is called combination reaction.Standard form--- A+B=C A + B → C............reaction in which 2 or more element combined together to form new compound.. The reaction in which two elements or compounds combined together to form a single compound is known as combination reaction Two or more reactants combine to form one product are called combination reactions. |
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| 51062. |
3 examples of rancidity |
| Answer» Rancidity\xa0is a condition in which the substance with oil and fats get oxidized when they are exposed to air. A substance is said to be\xa0rancid\xa0when there is a change in smell, taste, and colour. An\xa0example of rancidity\xa0is when a chips pack is exposed to atmospheric air which results in a change in taste and odor. Cooked food left without refrigerator for a long time becomes rancid. Biscuits also become rancid if not kept in an air tight container. | |
| 51063. |
The mass of an object can be changed or not? |
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Answer» Thanks for ans The mass of an object does not change with speed; it changes only if we cut off or add a piece to the object No |
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| 51064. |
What is di hibride cross?? |
| Answer» This is a cross between two different genes for different observation | |
| 51065. |
Difference between resistance and resistor |
| Answer» Resistance is the property of a conductor, which determines the quantity of current that passes through it when a potential difference is applied across it.A resistor is a electrical componet with a predetermined electrical resistance, like 1 ohm, 10 ohms 100 ohms 10000 ohms etc.Depending on how much current you want to pass through a circuit, you would design the circuit with the required resistors.When it comes actual circuit designing, dealing with components or physical board designing, these two words become interchangeable.For example, if we say "a resistor of 22 ohms" or we say "a resistance of 22 ohms", both are accpetable. | |
| 51066. |
What are the three basic of power plant |
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Answer» Wind powerplant and tidal Hydopower |
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| 51067. |
What is ph scale of nacl |
| Answer» 7 | |
| 51068. |
All pigments related to human body question with answer |
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| 51069. |
Qno5to 8th chapter 1 class 10th |
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| 51070. |
What do u mean by saponification? |
| Answer» Saponification is the\xa0hydrolysis\xa0of an\xa0ester\xa0under acidic or basic\xa0conditions to form an\xa0alcohol\xa0and the\xa0salt\xa0of a\xa0carboxylic acid. Saponification is commonly used to refer to the reaction of a metallic alkali (base) with a fat\xa0or\xa0oil\xa0to form\xa0soap.\xa0Example:Ethanoic acid reacts with alcohols in the presence of a conc. sulphuric acid to form esters.C2H5OH + CH3COOH → CH3COOC2H5 + H2OThe ester, on treating with a base such as NaOH is converted back to alcohol and sodium salt of carboxylic acid. The reaction is known as\xa0saponification\xa0because it is used in the manufacture of soap. CH3COOC2H5 + NaOH → C2H5OH + CH3COONa | |
| 51071. |
What is Absorption ?What is Assimilation? Please give answer in detail |
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Answer» Thanks meghna ji Absorption: The process of absorbing food in the form of nutrients into the blood stream of the body. Assimilation: The process of nutrients being absorbed by each cell of the body in the form of energy. Egestion: Secretion of waste, unwanted and excess substances from the body after food the as been digestion. |
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| 51072. |
What is lime water test for the detection of carbon dioxide gas |
| Answer» Limewater Test\xa0- To check for carbon dioxide in your breath. Using\xa0lime water\xa0is a fun and easy way to\xa0test\xa0for the presence of carbon dioxide. The exhaled carbon dioxide is used to produce a precipitate of calcium carbonate with the\xa0lime water.\xa0The most effective\xa0way to test\xa0for CO2\xa0is to bubble the\xa0gas\xa0through "limewater", a diluted solution of calcium hydroxide (slaked lime). When you bubble\xa0carbon dioxide\xa0through the solution, it forms a solid precipitate of calcium carbonate – chalk or limestone. Calcium carbonate is insoluble in water. Carbon dioxide reacts with\xa0calcium\xa0hydroxide solution to produce a white precipitate of\xa0calcium\xa0carbonate. Limewater is a solution of\xa0calcium\xa0hydroxide. If carbon dioxide is bubbled through limewater, the limewater turns milky or cloudy white. | |
| 51073. |
What is the function of the brain? |
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Answer» to control our body parts and decide to functions and maintain the maintain the parts of body and make coordination with all body part To control our body functions and parts To control your body and make coordination with all the body parts.\xa0 |
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| 51074. |
Why the chemical properties are same of all elements of same group? |
| Answer» Apna nam btao please | |
| 51075. |
Why do we apply the paint on iron articles? |
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Answer» This is because there is some miosture present in the air it rust the iron material. So, the paint os applied to prevent it from rusting. When we apply Paint on iron articles layer of paint is there to prevent iron article to rust To prevent it from rust |
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| 51076. |
In which by biochemical form the photosynthate Moves in phloem tissues? |
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Answer» Fluid To from of sucrose In the form of sucrose |
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| 51077. |
How brain controls the whole body functions? |
| Answer» Various parts of the brain and their functions are given below:\xa0\tPart of brainFunctionsCerebrumGoverns intelligence, thinking, memory and other mental abilities, voluntary actions, sensations, emotions and speech.HypothalamusCoordinates messages from the autonomous nervous system, controls involuntary actions, as well as the sexual and emotional behaviour and forms an axis with the pituitary.ThalamusFunctions as major coordinating center for sensory and motor signaling.MidbrainThe midbrain controls reflex movements of the head, neck and trunk in response to visual and auditory stimuli. It also controls the reflex movements of the eye muscles, changes in pupil size and shape of the eye lens.CerebellumResponsible for precision and fine control of voluntary movements as well as maintaining posture and equilibrium of the body.PonsIt regulates respiration.MedullaContains vital centre for controlling blood pressure, respiration, swallowing, and salivation, vomiting, sneezing and coughing.\t\xa0 | |
| 51078. |
State law of conservation of mass....... |
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Answer» According to this law, mass of reactant is equal to mass of product..... Law of conservation of mass State s that mass can neither be created nor be destroyed in a chemical reaction. Law of conservation of mass states that mass is neither created nor destroyed during a chemical reaction. The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system\'s mass cannot change, so quantity can neither be added nor be removed |
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| 51079. |
Nitrogen sulphide gas burns in air to give water and sulphur dioxide |
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| 51080. |
How are life process are inter related to each other |
| Answer» Various life processes are interconnected each other by various processes like if intake food and digest it then after its complete digestion it is absorbed by villi\xa0after that it connects to a new life process which is transportation . The absorbed food is oxidised in our cells by taking oxygen from a new life process which is respiration . The undigested food is get excreted out of the body by a new life process i.e excretion . So, by that all ways they are interconnected. | |
| 51081. |
What is the function of mucus in gastric glands? |
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Answer» Mucus protects the Inner lining of the Stomach(Mucosa) from its own secretion I.e. HCl as HCl is an Acid and causes the erosion of inner lining of Stomach.. Mucus prevent HCl to deposited in excess.... |
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| 51082. |
Difference between inspiration and expiration. |
| Answer» \tAttributesInhalationExhalationWhat it meansIntake of air into the lungsExpelling air out of the lungsTypeActive processPassive processSize of the chest in the processIncreases, expandsDecreases, reducesDiaphragm – roleContracts, gets flattened by moving downRelaxes, moves up forming a dome-shapeIntercostal muscle – roleRelaxation of internal intercostal muscles and contraction of external intercostal musclesContraction of the internal intercostal muscles and relaxation of external intercostal musclesLungs – volumeRises to cause inflationReduces causing deflationAction it causesSupply of oxygen-rich air to the bloodCarbon dioxide is expelled outAir compositionInhaled air is a mix of oxygen and nitrogenExhaled air is a mix of nitrogen and carbon dioxide\t | |
| 51083. |
Name the three secretions of gastric glands. |
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Answer» Mucus,pepsin and HCl The three types of cells found in gastric glands and their secretions are\tMucus neck cells secrete mucus. Mucus provides lubrication and protection to the mucosal epithelium from the excoriating effect of HCl.\t\tPeptic or chief cells secrete pepsinogen. Pepsinogen converts proteins into proteoses which are further converted into peptones.\t\t\tOxyntic cells or parietal cells which secrete HCl and intrinsic factors. HCl provides acidic pH 1.8 which is necessary for the action of pepsins. Intrinsic factors are required for the absorption of vitamin B12.\t |
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| 51084. |
Types of amino acids?? |
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| 51085. |
Function of fore brain and hind brain |
| Answer» Forebrain –\xa0Largest part of the brainIt is the anterior part of the brain. The fore brain parts include:\tCerebrum\tHypothalamus\tThalamusForebrain Function:\xa0Controls the reproductive functions, body temperature, emotions, hunger and sleep.Fact: The largest among the forebrain parts is the cerebrum. It is also the largest part of all vertebrate brains.Hindbrain: The central region of the brainThe\xa0hindbrain is composed of:\tCerebellum\tMedulla\tPonsHindbrain function: The three regions of the hindbrain coordinates all processes necessary for survival. These induce breathing, heartbeat, sleep, wakefulness and motor learning. | |
| 51086. |
When virus enter our body then ,how it gets converted into living from non living |
| Answer» It utilises our own body\'s mechanism to work until and unless they are out from the body they are not able to do so and hence are non living | |
| 51087. |
How diamond is formed |
| Answer» Diamonds were formed over 3 billion years ago deep within the Earth\'s crust under conditions of intense heat and pressure that cause carbon atoms to crystallise forming diamonds. This expansion causes the magma to erupt, forcing it to the Earth\'s surface and taking along with it diamond bearing rocks. | |
| 51088. |
Function of bone marrow |
| Answer» Bone marrow is a spongy substance found in the center of the bones. It manufactures bone marrow stem cells and other substances, which in turn produce blood cells. Each type of blood cell made by the bone marrow has an important job. Red blood cells carry oxygen to tissues in the body. | |
| 51089. |
Function of medulla oblangata |
| Answer» The medulla oblongata helps regulate breathing, heart and blood vessel function, digestion, sneezing, and swallowing. This part of the brain is a center for respiration and circulation.Besides the medulla oblongata, your brainstem also has a structure called the pons. The pons is a major structure in the upper part of your brainstem. It is involved in the control of breathing, communication between different parts of the brain, and sensations such as hearing, taste, and balance. | |
| 51090. |
What is difference between premolars and molar teeth? |
| Answer» PremolarsPremolars are\xa0also called bicuspids and are located behind the canines. These teeth have a flat surface with ridges, which is adapted for crushing\xa0and grinding food into\xa0smaller portions. Humans have eight premolars, two on each side of the jaws.MolarsMolars are the largest and\xa0strongest teeth. It has a large and flat biting surface, which is well-adapted for grinding food. Humans have 12 molars, six in each jaw. Four of those are wisdom teeth, which is also called the third molar, which come in between the ages of 17 to 25. | |
| 51091. |
Classified the types of parasitic |
| Answer» Parasites can be classified based on their size, characteristics, and relationship with the host:\tEndoparasites: A\xa0parasites living\xa0inside the host’s body. For example-Plasmodium falciparum, a\xa0parasite which causes malaria\xa0in humans.\tEctoparasites: A parasites living\xa0outside the\xa0host’s body. For example- Bedbug, a\xa0parasite which causes skin irritation.\tMesoparasites:\xa0These enter the opening of the body of a host and embed themselves only partially. | |
| 51092. |
How many number of neutron are realised in fussion u-235 |
| Answer» It is fission not fusion. When U-235 absorb a neautron then it dissociate into two new atoms with releasing three neutron and energy. | |
| 51093. |
I want vidio in hindi |
| Answer» No | |
| 51094. |
what is tesestivity |
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Answer» The resistivity of a material is the resistance of a wire of that material of unit length and unit cross-sectional area. The unit for resistivity is the ohm-metre.The resistivity of a material depends on its nature and the temperature of the conductor, but not on its shape and size.A good conductor has less resistivity, whereas a bad conductor or insulator has high resistivity.The resistivity of semi-conductors lies between that of conductors and insulators. The resistivity of a metallic conductor increases with an increase in its temperature, whereas the resistivity of a semi-conductor decreases with an increase in its temperature. I want vidio in hindi |
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| 51095. |
How to amoeba move |
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Answer» By its pseudopodia Pseudopodia Movement occurs through the use of pseudopodia, where the cytoplasm pushes the plasma membrane outward or inward, creating blunt, finger-like projections.There can be multiple pseudopodia at one particular instance, hence, its shape rapidly changes. |
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| 51096. |
How many people were participate in dandi march with gandhi ? |
| Answer» Every day more and more people joined him and on 5th April 1930, they reached Dandi. At this time, there were about 50,000 people participating in the march. | |
| 51097. |
Sodium hydroxide is treated with acetic acid to form sodium acetate and water |
| Answer» NaOH + CH3COOH----> CH3COONa + H20... This is double displacement and neautralisation reaction. | |
| 51098. |
What is the symbol of hydroxide |
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Answer» H OH OH OH |
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| 51099. |
What is the observation when barium chloride react with sodium sulphate? |
| Answer» Bacl2 + Na2So4 ------ BaSo4 + NaCl(aq) (aq) ( white (aq) ppt.)Note: NaCl is a salt which is solid but it is dissolved in water so we write (aq) in above reaction. | |
| 51100. |
Five R\'s rule explain |
| Answer» The 5R\'s areRefuse; this means that \'say no for things \'ex; plastic should refuseReduce; decreasing the sources like switch off fans and light, leaking taps, use of paper bags, etcRecycling; conversation of waste material into new articleex; paper, metal, glass......Reuse; using things after finished to other materialex; Envelop,some bottles like boosts used for keeping some granules....Repurpose; things that cracked cookeryex; broken glass used as grow of plants.... | |