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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.
| 52801. |
what is heterotrophic nutrion |
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Answer» Heterotrophic nutrition is the mode of nutrition in which organisms depend upon other organisms to survive. All animals and non green plants are heterotrophic. Heterotrophic organisms have to acquire and take in all the organic substances they need to survive. ... All heterotrophs depend on autotrophs for their nutrition. Depend on other for foods |
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| 52802. |
Explain nutrition in amoeba with labelled diagrams |
| Answer» The mode of nutrition in Amoeba is holozoic nutrition.2) Amoeba takes in food using temporary finger-like extensions called pseudopodia.3) These pseudopodia fuse over the food particle forming food vacyole.4) Inside the food vacuole, complex substances are broken down into simple ones which then diffuse into the cytoplasm.5) The remaining undigested material is moved to the surface of the cell and thrown out. | |
| 52803. |
Difference between left auricle and left ventricle |
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Answer» 1. Ventricles carry blood from tissues and organs to the heart.2. They do not have thick walls.3. The blood have normal blood pressure.4. Unidirectional.1.arteries carry blood from heart to the organs.2.they have thick and elastic walls.3.the blood have high pressure.4.both direction flow is possible. left auricle consists od deoxygenated blood which is transfered to lungs to make it oxygen rich blood this blood then goes to left ventrical |
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| 52804. |
Significance of magnetic fields |
| Answer» Magnets are essential in today\'s electronic technology. Magnets are useful, fun and even a little mysterious--they can repel as well as attract. | |
| 52805. |
Write the steps of electrolysis of water with a labelled diagram |
| Answer» \tTake a glass beaker fix two electrodes. The positive electrode acts as anode and negative electrode act as cathode.\tFill 1/3 of beaker with water. Take two test tubes. Insert on electrodes. Observe the level of water in the test tubes.\t\xa0Connect the electrodes to a battery. Pass the electricity for a period of time.\t\xa0Later switch off the current and observe the level of water in test tubes. The level of water in the test tubes is decreased. The free space in the test tubes is filled with H2 and O2 gases.\tOxygen gas is evolved at anode and hydrogen gas released at cathode. | |
| 52806. |
Valancy chart |
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Answer» Follow this link u get ur answer https://sciencenotes.org/valences-of-the-elements/ |
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| 52807. |
Is HC VERMA Physics is Good book for preparation of Boards or any other is thier |
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Answer» S chand , beacause it have simple language , easily understandible by student No from my suggestion it is very good book comparing from other references S. Chand |
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| 52808. |
What is the role of HCL in stomach |
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Answer» To make food acidic and to digest it 1) hcl is responsible for acidic nature of food. 2)It is kill germs in stomach.3)Also responsible for activation of pepsin enzyme. Making acidic and killing bacteria in stomach To protect the inner lining of the stomach and provide a acidic medium for enyzyme to attack |
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| 52809. |
What makes the electric charge to flow? |
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Answer» electrons are conducting from one place to another place because of lack of electrones in positive terminal and we all know that what happens when there is less amount of particals in any area . if it is that particals from denser medium will flow towards rarer medium and hence this results in the flow of charges When electron is not held by nucleus of an atom Free electron in Conducting wire There are free electron present in the wire which flow in the circuit Current |
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| 52810. |
What is common name of the compound caocl^2 |
| Answer» Calcium oxy chloride | |
| 52811. |
What is hyperacidity? How to prevent it |
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Answer» We can prevent by flowing ways avoid long gaps between the meals.Avoid late night work, and in case working then keep something to chew upon in between.Drink lots of water.Avoid spicy, oliy and fried food.Do regular exercises.Include green salad in diet and take 15 minutes before meals.Take a warm glass of water after every meal. Hyper acidity is also called Acid Dyspepsia, which is one of the most common problem. Hyperacidity is a medical condition in which the stomach secretes a lot of acids |
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| 52812. |
What is formula of zinc |
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Answer» zn Of course Zn The molecular formula of zinc is (Zn+2). It is a cation. |
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| 52813. |
Write a short note on the water harvesting structures used in largely level terrains. |
| Answer» The water harvesting structures mainly used are crescent shaped earthen embankment or low straight concrete and rubber made check dam built across gullies flooded with the water during rainy season during seasonal monsoon ponds get filled behind this structure but most of the structures cannot hold water throughout the year their main aim is to refill the groundwater beneath the earth surface | |
| 52814. |
Define principal focus of spherical lens and spherical mirror |
| Answer» (A) spherical lens------ it is a point on principal axis where light rays parallel to each othe and parallel to principal axis after refeaction either meet actually on other side(in case of convex lens or converging lens) or appears to meet o same side(incase of concavelens or divergimg lens) as that of object is called as principal focus of spherical lenses(B)spherical mirrors----it is a point on principal axis where light rays parallel to each other and principal axis after reflection either actually met(in case of concave mirror ) or apears to meet(in case of convex mirror) at that point is called principal focus of spherical mirors | |
| 52815. |
Give some uses of acid ,salt and base. |
| Answer» USES OF SOME ACIDS ARE------------------------>. 1.HCl acid is used as a toilet cleaner.It is also used for manufacturing PVC................ .. 2.H2SO4 acid is used in storage batteries.It is also used for manufacturing fertilizers,paints, detergents,HCl and alum.... 3.Acids are also used as food preservatives and in perfumes and medicines etc,.............. USES OF SOME BASES ARE------------------------>. 1.NaOH base is used for manufacturing soaps,papers,medicines.It is also used in refining of petroleum....... ........... ................ 2.Ca(OH)2 base is used in making cement, bleaching powder,white washing etc,........... 3.Some bases are used as antacid like Mg(OH)2 , they are used as a drying agent.... USES OF SOME SALTS ARE------------------------>. 1. Salts are used as preservatives in pickles,in curing fish and meat....... ............. 2.In manufacturing soaps and melting ice.... 3.Some salts are used as oxidising agents and also used as a disinfectant ................ | |
| 52816. |
what are indicators? |
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Answer» Indicators are something which Indicates us something.Acid base indicators tell us that whether the substance is an acid or base by changing colours.Like litmus, purple cabbage etc,. Indicators are chemical substances which is used to indicate the given chemicals as acids or bases |
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| 52817. |
Explain transportation of food in plants ? |
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Answer» Phloem transports food materials from the leaves to different parts of the plant. The transportation of food in phloem is achieved by utilizing energy from ATP which helps in creating osmotic pressure that transport food from the area of high concentration to low concentration. Food is transported by pholem which contains sieve tubes , companion cell |
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| 52818. |
What will happen when beetroot solution is added to lemon juice,soda water , vinegar ,baking soda |
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Answer» There is no colour change for lemon juice soda water and vinegar. But colour changes to yellow for backing soda It become red |
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| 52819. |
I want 150-150 questions in mirror ,lens and electricity |
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Answer» What have u written??? Write the. Molecular formula of the 2 and 3 member of the homologous. Saries where the first member is ethyne |
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| 52820. |
what happen to silver chloride when it is in sunlight |
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Answer» Silver chloride decomposes to form silver and chlorine it is the type of photo decomposition reaction..............2AgCl----->2Ag+Cl2 when we put silver chloride in sunlight then decomposition reaction takes place |
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| 52821. |
State the functions of Bowman\'s capsule and glomerulus. |
| Answer» Bowman\'s capsule and glomerulus have semipermeable walls. The glomerulus, is a tuft of capillaries contained in Bowman\'s capsule. The water and dissolved substances (wastes and useful) are filtered into the Bowman\'s capsule and from here they are filtered into the tubule. Thus, both the structures act as filtering apparatus. | |
| 52822. |
An electric generator converts |
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Answer» Nothing ignore it!! No i cant understand ur sentence shivani Wt a habit!! rashi kumari can you able to under stand my sentences because my habit is to make things complicated and long please reply Thanks a electricity generator convertes kinetic energy possed by rotator into electrical energy(dc current). |
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| 52823. |
Iron nails becomes brownish and then blue in colour when kept in copper sulphate solution |
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Answer» iron nail becomes brownish when putted in copper sulphate solution because of displacement of copper from its solution by a highly reactive metal(iron nail)and copper sulphate solution which is blue in colour turnes into iron sulphate solution and blue colour gradually convertes into green coloured solutionactually your don\'t have any sence so this is full explanation according to my thinking Ok then |
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| 52824. |
Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire form? |
| Answer» tungsten metal are coiled in the bulb to make a highly resistive area so that it can convert a lot of electricity into heat and finally into light but if we install this metal parallel then resistence will be less therefore heat produced will be less and finally results in less production of light | |
| 52825. |
List out different engyme present in a digestive system in there different location and function |
| Answer» Pepsin:acts in acidic medium | |
| 52826. |
Name the different digestion gland of the human body along with the location and function.? |
| Answer» a) Salivary glands secrete saliva along with enzymes. Ptyalin is the strach hydrolysing enzyme secreted by salivary glands in human beings. It is also called as salivary amylase. Ptyalin secreted in the mouth brings about digestion of starch in the mouth itself. It hydrolyses starch into disaccharaides like maltose and isomaltose and other small dextrins called as limit dextrinsb) Gastric glands secrete HCL, pepsinogen, mucous.Gastric juice is a secretion of gastric glands located in the lining of the stomach. It is mainly made up of electrolytes, mucus, enzymes, hydrochloric acid, intrinsic factor etc.c) Intestinal glands are present in the inner lining of small intestine. These secrete various enzymes which aid in the process of digestion of all the components of food. Maltase, sucrase and lactase bring about digestion of carbohydrates. Peptidases help in digestion of proteins. Enterokinase helps in the activation of other enzymesd) Liver is the largest gland in our body. The liver secretes a yellowish green watery fluid called bile. It is temporarily stored in a sac called the gall bladder. Bile provides an alkaline environment for many enzymes to get active. It also reduces the acidity of chyme. Bile plays an important role in the digestion of fats. Bile is sent into duodenum through a narrow tube-like structure called the bile duct. Bile breaks the larger fat molecules into tiny droplets, thereby increasing their surface area, which helps in the digestion of fats easily.e) Pancreas is the mixed gland. It acts as both endocrine and exocrine gland. The pancreas secretes the pancreatic juice that helps to digest carbohydrates, proteins and fats. The pancreatic juice converts carbohydrates into simple sugars and glucose, proteins into amino acids, and the lipids into fatty acids and glycerol. Trypsin and chymotrypsin help in the digestion of proteins. | |
| 52827. |
What is solanoid |
| Answer» A solenoid is a coil of insulated or enameled wire wound on a rod shaped from made of solid iron, solid steel or powdered iron. Devices of this kind can be used as electromagnets, as inductors in electronic circuits, an as miniature wireless receiving antennas. | |
| 52828. |
Heredity means what |
| Answer» It means genetic endowment. | |
| 52829. |
What r da characterstics features of respiratory stucture |
| Answer» It help in breathing | |
| 52830. |
Why like charge attract each other ? |
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Answer» Questions is wrong mr rahul Not like charges attract each other; like charges repel each other and unlike charges attract each other. Unlike charge attracts each other and like charges repel |
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| 52831. |
describe how will you locate a current carrying wire concealed in a wall? |
| Answer» In parral. | |
| 52832. |
Derive ohm\'s law? |
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Answer» According to Ohm\'s law the potential difference (V) , across the ends of a given metallic wire in an electric circuit is directly proportional to the current ( I) flowing through it. During this measurement the temperature must be constant.V proportional IV/I= constantI=RV=IRR=V/II=V/R THANKU ?☺???? Across the end of a given metallic wire in an electric circuit is directly proportional to the current flowing through it this called ohms law V/I = constant= R According to ohm’s law ,at constant temperature the current flowing through the circuit is directly proportional to the potential difference and inversely proportional to resistance.I=V/R. V I\'d directly proportional to l. And r is the constant. At constant tepm. The current is directly proportional to potential diffrence . At constant temp. The I is directly proportional to P. D V is directly proportional to I.. V=ir |
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| 52833. |
Define excretion? |
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Answer» Excretion means throwing waste out of our body Removal of toxic materials from body It is a process by which waste by products are removed from the body and discarded outside is called excretion |
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| 52834. |
What you mean by nervous system? |
| Answer» Nervous system is a system in this system massage means talk pass to the brain and it is spread all over the body | |
| 52835. |
Hmare Stomach me acid kiss form me rehta h. Gas/Liquid.? |
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Answer» Liquid In liquid form Liquid Liquid form me Liquid form pe |
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| 52836. |
Define concave lens? |
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Answer» Lenses which are curved or presed inward and are thicker at edges and thinner at centre and also diverges paralel beam if light after refraction are called concave lens Any lens which has an inward curve in the middle is called concave lens |
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| 52837. |
Does geogrpical isolation of animals lead to formation of new species? |
| Answer» | |
| 52838. |
What is lymph? What its function?????????? |
| Answer» Lymph are tiny hole present in whole body and in lymph contain lymphocytes which clean the lymph which is in the form of liquid | |
| 52839. |
What is the function of digestive enzymes.? |
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Answer» to breakdown complex hard non diffusable substance into small diffusable substance for easily absorbed by the body To break down food in smaller particles Its function is to breakdown food in smaller particle & digest it Break starch into sugar Breakdown complex food into simpler ones The function of digestive enzymes to digest food . |
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| 52840. |
In which part of the digestive system is water absorbed? |
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Answer» It is absorbed in large intestine Large intestine |
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| 52841. |
How is the small intestine designed to absorb digested food..? |
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Answer» it has finger like projection structure called villi which is absorbed the nutrients in the food It has tiny finger like structures called villi which has a large network of blood and lymph capillaries through which water is absorbed and transported |
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| 52842. |
What is the role of the acid in our stomach.? |
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Answer» Killing of unwanted bacteria It makes the stomach acidic in nature which also activates the gastric juices present in our stomach The hydrochloric acid creates an acidic medium for the action of pepsin. It also kills bacteria that may have come along with food. The function of acid in our stomach is to kills jerms and bacteria present in food . |
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| 52843. |
What do you mean by \'1 volt of potential difference? |
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Answer» 1 V of potential difference means when 1 J work is done to carry a unit positive charge from one point to another (1C of charge). Potential difference is said to be of 1V when 1J of work Is done in moving a charge of 1 coulomb If 1joule be the work done in carrying 1columb of charge from end to another end in an electric circuit is called 1volt . |
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| 52844. |
Whar is the fullform of APT |
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Answer» Adinosine tri phosphate ATP : Adenosine Tri Phosphate Its ATP and its full form is Adinosine Tri Phosphate |
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| 52845. |
What are outside raw material used for by an organisms ?? |
| Answer» Minerals , protein | |
| 52846. |
How znco3 gives zno + o2 is an electrolytic decomposition reaction? |
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Answer» Thanks 4 ur ans but i wanted to ask how it is an electrolytic decomposution reaction not what it gives on heating.... Upon heating ZnCO3---->ZnO+CO2. |
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| 52847. |
draw ray diagram to show the principal focus of a concave mirror and convex mirror |
| Answer» | |
| 52848. |
describe human respiratorysystem |
| Answer» The human respiratory system is composed of a pair of lungs. These are attached to a system of tubes which open on the outside through the nostrils. Following are the main structures in the human respiratory system:Nostrils: There two nostrils which converge to form a nasal passage. The inner lining of the nostrils is lined by hairs and remains wet due to mucus secretion. The mucus and the hairs help in filtering the dust particles out from inhaled air. Further, air is warmed up when it enters the nasal passage.Pharynx: It is a tube like structure which continues after the nasal passage.Larynx: This part comes after the pharynx. This is also called the voice box.Trachea: This is composed of rings of cartilage. Cartilaginous rings prevent the collapse of trachea in the absence of air.Bronchi: A pair of bronchi comes out from the trachea; with one bronchus going to each lung.Bronchioles: A bronchus divides into branches and sub-branches; inside the lung.Alveoli: These are air-sacs at the end of bronchioles. Alveolus is composed of a very thin membrane and is the place where blood capillaries open. This is alveolus; where oxygen mixes with the blood and carbon dioxide exits from the blood. The exchange of gases; in alveoli; takes place due to pressure differential. | |
| 52849. |
Why Petroleum and cole is fossil fuel |
| Answer» Petroleum is formed from the dead remains of living organisms which lived in sea and were buried millions of year ago below the sea bed. Because of high pressure and temperature those dead remains were transformed into petroleum. Since, petroleum is the product of dead remains, so it is known as fossil fuel.Coke is obtained by heating coal in the absence of air. Coal is considered as fossil fuel as it is formed because of carbonization of dead remains of living organism | |
| 52850. |
From where can we get last 10 year question papers of sa1 science?? Except for internet |
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Answer» Through this app From students of that time ? |
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