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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.
| 43651. |
Which book is best for class 10 science as refresher |
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Answer» Arihant ka sample paper All on 1 and dinesh All in one,Pradeep or Foundations of IIT by Pearson... RS Aggarwal Pradeep S chand and..all in one...i think so |
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| 43652. |
What about results guys |
| Answer» Here’s how you can check your 10th, 12th board results 2019-#Visit the official website of the board (Links provided below)#Click on Result tab#Enter the roll number and other login credentials#Click on Submit and the result will appear on the screen.Hope it helps.......#@diti? | |
| 43653. |
Why industries depend on forests |
| Answer» They are non other than biomass industries.... | |
| 43654. |
Why candle not burn with blue flame |
| Answer» Candle flames are low temperature and so they are yellow . Hotter flames are blue in colour and blue light is more energetic than yellow light . So candle flames are yellow because they are the result ilof burning low energy fuel in low oxygen and so they are not very hot | |
| 43655. |
Where are salivary glands present in the human being ?What are its functions |
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Answer» Mouth cavity I don\'t know Its function is to make food soluble form Buccal cavity |
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| 43656. |
Presipitate |
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Answer» Precipitate makes in chemical reaction Precipitate is a solid product which separates out from the solution during a chemical reaction. Example - 2 KI + Pb (NO3)2 gives Pb I2 + 2 KNO3 In this reaction yellow precipitate is formed ???????????? |
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| 43657. |
What is aerodic |
| Answer» Do you mean aerobic respiration? | |
| 43658. |
How is respiration different from breathing?Solution: |
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Answer» \tBreathingRespirationBreathing is a mechanical action involving the act of inhaling and exhaling. Breathing involves taking in oxygen from the environment and removal of carbon dioxide from the body.Respiration also involves the process by which chemical energy stored in the food is released in the form of ATP along with carbon dioxide and water.Breathing takes place in the respiratory organs called as lungs.Respiration takes place in the cells.Breathing is a physical and voluntary process.\xa0Respiration is a chemical and involuntary process.\xa0Breathing involves respiratory organs and the cells called as alveoli.\xa0Respiration involves cells in the body an their organelles.\t Breathing involve inhale of oxygen from the atmosphere to lungsWhereas cellular respiration involve break down of glucose into carbon dioxide and water in living cells, releasing energy |
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| 43659. |
Why concave mirrors are used for torch rather than convex? |
| Answer» A concave mirror is used so that a parallel beam of light can be obtained , as this travels a greater distance.The bulb is placed at the focus of the mirror. | |
| 43660. |
Which acid very strong |
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Answer» Those acids which completely ioniced in water .. Hcl,H2SO4 H2SO4 HCL Hydrochloric acid.... |
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| 43661. |
Write five functions of stomata |
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Answer» There are small openings on the lower surface of the leaves. These pores are called stomata. These openings are surrounded with guard cells.Functions of stomata:1. It helps in the transpiration of water, i.e., the loss of excess water from the plant.2. Loss of water from the stomata creates an upward pull, i.e., suction pull which helps in absorption of water from the roots.3. They help in exchange of gases. There are only 3 functions of stomata. Yhey are as follows-1. Absorbs carbon dioxide2. Helps in transpiration 3. Releases oxygen |
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| 43662. |
Why does a desert coolar cool better on hot dry day |
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Answer» A desert cooler cools better on a hot dry day because on a hot dry day temperature is high and humidity is less which helps in better evaporation. Due to the higher rate of evaporation it gives better cooling effect. A desert cooler cools better on a hot dry day because with increase in temperature the rate of evaporation also increases and thus the water particles in the cooler get enough kinetic energy that they escape.. This decreases the overall kinetic energy of the system and thus creating a cool sensation |
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| 43663. |
What does acid base have common |
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Answer» Thanks \tMost strong acids and bases are both corrosive in nature. They tend to corrode or rust metals.\tBoth acids and bases change the colour of litmus paper. Acids turn the colour of blue litmus paper to red and bases turn the colour of red litmus paper to blue.\tAcids and bases both react with water and a lot of acids and bases are soluble in nature.\tBoth acids and bases are electrolytes which means that they’re good conductors of electricity.\tThe process of mixing acid or a base in water is an exothermic one. They may look similar.. For example HCl is an acid but in appearance it looks similar to KOH(potassium hydroxide) which is a baseThis is one of the reason why special indicators are provided in laboratories to differentiate btween acids and bases Acids give off H+ (Hydrogen) ions in water; bases give off OH- (Hydroxide) ions in water. Acids generally taste sour due to the sour H+ ion; bases taste bitter due to the OH- ion; but they may have other tastes depending on the other part of the molecule. ... Acids corrode active metals ; Bases denature protein.........Bhul gai aastha ji itni jaldi mujhe |
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| 43664. |
What is a balance chemical equation? Why should chemical equations be balanced |
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Answer» In a balanced chemical equation the number of atom in reactants as well as products side should be equal .....It should be balanced to follow the law of conservation of mass...... The no. Of atom in reactant side is equal to the no. Of product is called balanced chemical equation.To prove the law of conservation of mass.A/q. Law of conservation of mass. Mass can neither be created nor be destroyed.So, we must balance chemical equarion |
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| 43665. |
What is the structure of Oesophagus ? |
| Answer» The esophagus is a muscular tube connecting the throat (pharynx) with the stomach. The esophagus is about 8 inches long. | |
| 43666. |
Explain human respiratory system? Class10 |
| Answer» Respiratory system in human beings: The respiratory system in human beings consists of the nose, pharynx, larynx, trachea, bronchi and lungs. Air is taken in through the nostrils. Nostrils further continue into the nasal cavity. There is a bony plate called the palate, which separates the oral cavity from the nasal cavity. Nasal cavity opens into the pharynx. The pharynx is a muscular chamber acting as a common passage for the windpipe or trachea and the food pipe or oesophagus. It is connected to the larynx through a slit-like opening called the glottis. The larynx connects the pharynx to the trachea. The trachea shows the presence of cartilaginous rings. The cartilaginous rings provide flexibility thus, facilitating continuous air flow. The inner wall of the trachea is lined by a mucous membrane consisting of ciliated columnar epithelium. The trachea divides into two branches or tubes called bronchi, one of which enters the right lung and the other enters the left lung. The bronchi have cartilaginous rings for distention. Each bronchus divides into fine secondary bronchi. These bronchi further divide into finer tertiary bronchi. In the lungs, each bronchus finally divides into finer and smaller branches called bronchioles. The bronchioles further divide to form smaller terminal bronchioles. The bronchioles divide repeatedly to form a cluster of tiny air chambers called air sacs or alveoli. Alveoli have thin and moist walls which enable gaseous diffusion with blood capillaries. The lungs are a pair of spongy and elastic respiratory organs protected by a bony rib cage. The base of the lungs rests on the diaphragm. Each lung is covered by two membranes. The inner membrane is called the inner or visceral pleura and the outer membrane is called the outer or parietal pleura. The diaphragm is a curved, musculo-fibrous sheath which separates the thoracic cavity from the abdominal cavity. The diaphragm plays a major role during respiration. | |
| 43667. |
Give 50 formula from type of chemical reaction |
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| 43668. |
What is mono parental and bio parental? |
| Answer» Search on google | |
| 43669. |
Why large amount of energy is released during nuclear reaction |
| Answer» | |
| 43670. |
Is respiration exothermic how |
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Answer» Because energy is released in respiration. Yes it is an exothermic when we eat food like rice,potato,etc it contains carbohydrates . On digestion carbohydrates are converted into glucose. During respiration the air we breathe,which oxidize the glucose into CO2,H2O and heat which provides sufficient energy As E is realising by this process.. |
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| 43671. |
Is density of water change when the container will change |
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Answer» Why No |
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| 43672. |
What are the series of carbohydrates and how many molecules are placed in carbohydrates? |
| Answer» carbohydrates belong to three categories: monosaccharides, disaccharides, and polysaccharides. | |
| 43673. |
Write a balanced chemical equation.Zinc + Silver nitrate ------> Zinc nitrate + Silver |
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Answer» Zn+2AgNo3 = Zn( No3)2 +2Ag zinc + silver nitrate → zinc nitrate + silverZn(s) + 2AgNO3(aq) → Zn(NO3)2(aq) + 2Ag(s) |
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| 43674. |
Apple cardiac vinegar is acid or bases |
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Answer» Of course! This is an acid and an organic acid Ofcourse acid It is acid. Acid I think the answer is acid.......as I hv heard that all the vinegar have acidic pH. Acid |
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| 43675. |
What happens chemically when quicklime is added to water? Give chemical equation of the reaction. |
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Answer» Thanks ? When calcium oxide(quicklime) is added to water, Calcium hydroxide(slaked lime) is formedChemical equation for the same is--CaO(s) + H2O(l) ------>Ca(OH)2 (aq) {combination reaction} Calcium hydroxide is used for white washing and reacts with carbon dioxide to form calcium carbonate and water. |
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| 43676. |
Who made humans? Why??? |
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Answer» I think so.... Nature God Vishnu , i think so |
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| 43677. |
What is reproduction and why it\'s important(Ch. 8 reproduction in Animal) |
| Answer» Hey Hema Kashyap here is ur answer!!Reproduction is important for the survival of all living things. Without a mechanism for reproduction, life would come to an end. There are two types of reproduction to learn in elementary grades, asexual and sexual reproduction.....? | |
| 43678. |
What is neutrilization ?? |
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Answer» The reaction between acid and base is called neutralization reaction. The products formed in this reaction are salt and water.Ex: HCl + NaOH → NaCl + H2O Wlcm Thanks ..honey When acid and base reacts to form salt and water, then this reaction is known as neutralisation reaction. |
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| 43679. |
Imporatance of double circulation in human being |
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Answer» Advantage of double circulation:\tHigher blood pressure is maintained.\tThere is a greater flow of blood to the tissues.\tDouble circulation gives the ability to create more pressure to pump blood round the whole body system.\tThere is separation of oxygenated and deoxygenated blood.\tThis lets supply of oxygen to different cells of the body.\tThis process circulation is essential to land animals that have lungs.\tThis lets supply of oxygen to different cells of the body.\tThis process circulation is essential to land animals that have lungs. Thanks aditi bestie Hey Aastha here is ur answer!!Advantage of double circulation:Higher blood pressure is maintained. There is a greater flow of blood to the tissues. Double circulation gives the ability to create more pressure to pump blood round the whole body system. There is separation of oxygenated and deoxygenated blood.? |
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| 43680. |
Benzene dot structure |
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| 43681. |
What is limph |
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Answer» \tLymph is a clear fluid sometimes white in colour comprises of white blood cells mainly lymphocytes. These cells also attack bacteria entering the cells. Lymph also contains the fluid from the intestine containing proteins and fats.\tLymph drains into lymphatic capillaries which join to form large lymph vessels and which open into larger veins.\tFunction of lymph is to carry absorbed digested fat from intestine and it also drains excess fluid from extra cellular space back into the blood. a colourless liquid containing white blood cells that cleans the inside of your body and helps to prevent infections from spreading |
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| 43682. |
Writing chemical formula |
| Answer» Take a pen and paper.. Thats how you write.. | |
| 43683. |
What is mastication |
| Answer» Mastication : Mastication or chewing is the process by which food is crushed and ground by teeth. It is the first stage in digestion process.Role of different sets of teeth in mastication :\tThere are four types of teeth in human beings. They are ’ Incisors, Canines, Premolars and Molars each for a specific\tfunction.\tIncisors are eight in number and they help the food to bite or cut.\tCanines are four in number and these are used for tearing the food.\tEight premolars are present in our mouth and they are used for chewing and grinding food.\tMolars are eight in number and they are also used for chewing and grinding food. | |
| 43684. |
State dobernier trait |
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| 43685. |
Which book help me to get 75+ of 80 |
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Answer» I think... Ncert. Is enough to score 80+ marks By studing NCERT deply you can score good marks R.d sharma is the best for maths.. S.Chand.is good..if you practice all excises... |
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| 43686. |
What are the type of nutrition that different type of mode that they use? |
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| 43687. |
Should the resistence of voltmeter be high or low ?give reason |
| Answer» Low...so that least amount of current is wasted.. | |
| 43688. |
How blue vitral is prepared |
| Answer» By Adding water to CuSO4.. | |
| 43689. |
Define Nutrition in paramecium |
| Answer» | |
| 43690. |
To identify precipitate |
| Answer» Something that is insoluble in water....will help you identify the precipitate...its usually white or yellow in colour... | |
| 43691. |
How to identify precitipitate |
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| 43692. |
What is villi. |
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Answer» Ileum is inner surface is folded to form villi which observes the product of digestion It increases the surface area for absorption. Villi r small finger like extension present on the walls of small intestine for more absorption of food. It is present in small intestine for more efficient food absorption.... |
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| 43693. |
A solutios turns red litmus blue its pH it likely to do |
| Answer» More than 7... | |
| 43694. |
What is netralization |
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Answer» neutralization is a reaction in which an acid react with base and gives salt and water.... Vo neutralization h... |
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| 43695. |
After digestion of food, what will remain at last. |
| Answer» i think glucose,protien | |
| 43696. |
What is the fullform of DDT ? |
| Answer» Dichlorodiphenyletrichloroethane ? | |
| 43697. |
Discuss the importance of decomposition reaction in metal industries |
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| 43698. |
What is electri charge |
| Answer» The flow of free electons is called as electric charge....... | |
| 43699. |
What is the nutrition |
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Answer» The process by which an organism takes food and utilises it for growth repair maintanace reproduction and for energy is called nutrition. Nutrition is a process of intake as well as utilisation of nutrition. What is the role of Hcl in digestive system |
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| 43700. |
What a ore |
| Answer» | |