InterviewSolution
Saved Bookmarks
InterviewSolution
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.
| 69751. |
What is wave theory of light |
| Answer» Huygens’ wave theory of light: In 1678, Dutch physicist Christian Huygens proposed a theory to explain the wave nature of light. This theory is called Huygens’ wave theory of light. According to wave theory of light, a source of light sends out disturbance in all directions. When these waves carrying energy reach the eye, they excite the optic nerves and the sensation of vision is produced. Main postulates of Huygens’ wave theory:i. Light energy from a source is propagated in the form of waves: The particles of the medium vibrate about their mean positions in the form of simple harmonic motion. Thus, the particles transfer energy from one particle to its neighbouring particle and reach the observer.ii. In homogeneous isotropic medium, the velocity of wave remains constant: Speed of the wave is not affected\xa0because density and temperature of isotropic medium are same throughout.iii. Different colours of light waves are due to different wavelengths of light waves: Each wave has its own wavelength. As the wavelength changes, its colour and frequency also changes. This is indicated by change in the colour.iv. The material medium is necessary for the propagation of wave: Periodic disturbance is created in the medium at one place which is propagated from that place to another place. The medium only carries disturbance and hand it over to the next particle. To explain the propagation of light waves through vacuum, Huygens suggested the existence of a hypothetical medium called ‘luminiferous ether’. | |
| 69752. |
Name the metal which can easily cut with knief |
|
Answer» Sodium (Na) and potassium (k) are the two metals which can be cut easily with knife Sodium and potassium Sodium and potassium Sodium and Potassium are the two\xa0metals which can be cut\xa0with a\xa0knife. Potttasium (k) |
|
| 69753. |
Name the two metal which can burn on our body temperature |
|
Answer» Gallium and cesium Galaxy m and caesium Gallium and cesium |
|
| 69754. |
Is iron burn in air? |
|
Answer» No iron is not burn in air but when iron react with air to form iron oxide.iron and copper are to metals which is not burn in air "NO"...as i think...not sure Wrong ans please study que carefully Sodium and potassium |
|
| 69755. |
Please tell me the best book for bio, chem and phy for 10th board |
|
Answer» Pradeep Applying your own notes which is based on NCERT, YouTube teachers and with online pdf I have both GRP publication book and Lakhsmir Sing both but if you want some extra to know u can use first one GRB and if you want to study class 10 syllabus then u can choose Lakshmir Sing Mangeet Kaur. But if you study well u will get good marks by anyone. Pradeep Refresher of lakmir singh and Manjit kaur......... |
|
| 69756. |
Explain how the *** of the child is determined at the time conception in human beings. |
|
Answer» Thanks In a human being, *** of a child is determined depending upon which kind of male gamete fertilises with the female gamete. There are 23 pairs of chromosomes in each of the maternal and paternal copy. Out of 23 pairs, 22 pairs are said to be autosomes (A) and one pair is called *** chromosomes (in male XY and female XX). At the time of fertilisation, the egg cell fuses with the sperm cell to form the zygote. If the sperm carrying X chromosome fertilises an ovum carrying X chromosome, then the child born will be a girl. If the sperm carrying Y chromosome fertilises an ovum carrying X chromosome, the child born will be a boy. With experience |
|
| 69757. |
Which is the less reactive substance |
|
Answer» Platinum is the least reactive element Silver is the less reactive Gold is less reactive Gold is the less reactive substance. Bromine |
|
| 69758. |
Explain the process of reproduction in humans in detail? |
| Answer» \xa0Sexual reproduction takes place in humans.\tThe human male reproductive system is a series of organs located outside of the body and around the pelvic region of a male that contribute towards the reproductive process.\xa0The male contributes to reproduction by producing spermatozoa. The process of spermatogenesis takes place in testes.\tThe female reproductive system consists of ******, cervix, uterus, oviducts and ovaries.\tAt certain intervals, the ovaries release an ovum, which passes through the Fallopian tube into the uterus.\tThe ova are larger than sperm and are generally all created by birth. Approximately every month, a process of oogenesis matures one ovum to be sent down the Fallopian tube attached to its ovary in anticipation of fertilization. If not fertilized, this egg is flushed out of the system through menstruation.\tIf the ova meets with sperm, the sperm penetrate and merge with the egg, fertilizing it. The fertilization usually occurs in the oviducts, but can happen in the uterus itself. . When developed enough to survive outside the womb, the cervix dilates and contractions of the uterus propel the fetus through the birth canal, which is the ******\tHuman\xa0reproduction takes place as internal fertilization by sexual intercourse. During copulation, the sperms are introduced into the female\'s ******. The sperm then travels through the ****** and cervix into the uterus or fallopian tubes for fertilization of the ovum. Upon successful fertilization, the zygote then implants itself in the wall of the uterus, where it begins the processes of embryogenesis and morphogenesis. Thus gestation\xa0of the foetus occurs within the female\'s uterus, called pregnancy. There is a period of nine months of pregnancy before childbirth. | |
| 69759. |
Power formula |
|
Answer» Power....... =====....... 1/f(in m) P= VI P-v/i P=V/I Power =work /timeP=W/t |
|
| 69760. |
Ch 1 notes |
|
Answer» School and tuition na provide nahi kare kaya Pure chapter ke notes kese de? |
|
| 69761. |
Difference between metal and non metal (for 1 mark) |
|
Answer» METALS ARE MALLEABLE AND DUCTILENON-METALS ARE NON-MALLEABLE AND NON- DUCTILE Metals- metal are substance which are corrosive in nature Non metal - they are non corrosive or smooth in nature |
|
| 69762. |
What is x-factor nebula 100a |
| Answer» | |
| 69763. |
What is the role of the seminal vesicles and prostate gland??? |
| Answer» | |
| 69764. |
Name of antioxidants |
|
Answer» Vitamins C and E, selenium, and carotenoids Vitamins C and E, selenium, and carotenoids such as beta-carotene, lycopene, lutein, and zeaxanthin are examples of antioxidants. This fact sheet offers basic antioxidant statistics, summarizes what research is saying about antioxidants and safety, and recommends sources for further details. Vitamins C and E, selenium, and carotenoids such as beta-carotene, lycopene, lutein, and zeaxanthin are examples of antioxidants. This fact sheet offers basic antioxidant statistics, summarizes what research is saying about antioxidants and safety, and recommends sources for further details. |
|
| 69765. |
What kind of nitrogenous waste is given out by birds? |
|
Answer» Berdegenous nitrogen I think?? Nitrogenous wastes in the body tend to form toxic\xa0ammonia, which must be excreted. Mammals such as humans excrete\xa0urea, while birds, reptiles, and some terrestrial invertebrates produce\xa0uric acid\xa0as waste. Uricothelic organisms tend to excrete\xa0uric acid\xa0waste in the form of a white paste or powder.\xa0Birds\xa0therefore\xa0get rid\xa0of their nitrogen\xa0waste\xa0by using only enough water to push the paste-like uric acid down the excretory system. |
|
| 69766. |
What is the colour of lymph? It is written colourless in ncert book. So is it correct? |
|
Answer» Yes it is colour less On google it\'s colour is milky yellowish and our teacher also told us that it is of yellowish colour Lymph is a light yellow liquid. It is a medium of circulation in human body which flows only in one direction - from body tissues to the heart. The functions of lymph are:(i) It takes part in the nutritive process of the body.(ii) It protects the body by killing the germs drained out of the body tissues with the help of lymphocytes contained in the lymph nodes, by making antibodies.(iii) It helps in removing the waste products like fragments of dead cells etc.\xa0 |
|
| 69767. |
What is difference between urea and uric acid??? |
| Answer» Urea\xa0is produced from the conversion of ammonia. Ammonia comes from the breakdown of amino\xa0acids\xa0which can be dangerous if too much ammonia is\xa0in the\xa0body.\xa0Uric acid\xa0is produced from\xa0purines\xa0in foods after it has been digested.\xa0Urea\xa0is made in the liver and excreted in urine. The\xa0urea\xa0cycle utilizes five intermediate steps, catalyzed by five different enzymes, to convert ammonia to\xa0urea. Birds, reptiles, and insects, on the other hand, convert toxic ammonia to\xa0uric acid\xa0instead of\xa0urea. | |
| 69768. |
What is placenta? What is the function of placenta? |
| Answer» Placenta is a disc like special tissue which develops between the uterus wall and the embryo after implantation. Its function is the exchange of nutrients, oxygen and waste products between the embryo and the mother. It contains villi on the embryo’s side of the tissue. On the mother’s side are blood spaces, which surround the villi. This provides a large surface area for glucose and oxygen to pass from the mother to the embryo. The developing embryo will also generate waste substances which can be removed by transferring them into the mother’s blood through the placenta. The time period from the fertilisation up to the birth of a baby is called gestation. The average gestation period in humans is about 9 months (about 38 weeks).The child is born as a result of rhythmic contractions of the muscles in the uterus.\xa0 | |
| 69769. |
What happens to the Crystal of washing soda when exposed to air?? |
| Answer» When sodium carbonate crystals are exposed to air They lose water of crystallization and turn to white powder. This process of loosing water of crystallization when exposed to air is called efflorescence. | |
| 69770. |
Blood pressure is measured by __________? |
| Answer» Sphygmomanometer | |
| 69771. |
How would you differentiate between a metal and a non-metal. |
|
Answer» Metals are sonorous , lustorous , ductile , malleable , Non metals are opposite of metals Metals are sonorous , lustorous , ductile , malleable , Non metals are opposite of metals |
|
| 69772. |
What is colour of washing soda |
|
Answer» White White White White White?? |
|
| 69773. |
Are all salts crystallised??? What is the nature of baking powder??? |
| Answer» Acidic | |
| 69774. |
Give an example of exothermic reaction |
|
Answer» 2Cu +o² --------- 2cuo +heat CaO + H2O = Ca(OH)2 + heat Respiration and decomposition vegetables matter into compost are example of exothormic reactionAlso,CH4+2O2-------CO2+2H2O |
|
| 69775. |
What is the GOS value |
| Answer» In telecommunication engineering, and in particular teletraffic engineering, the quality of voice service is specified by two measures: the grade of service (GoS) and the quality of service (QoS).Grade of service is the probability of a call in a circuit group being blocked or delayed for more than a specified interval, expressed as a vulgar fraction or decimal fraction. This is always with reference to the busy hour when the traffic intensity is the greatest. Grade of service may be viewed independently from the perspective of incoming versus outgoing calls, and is not necessarily equal in each direction or between different source-destination pairs. "Grade of Service" sometimes means a measure of inbound call center traffic to verify adherence to conditions to measure the success of customers served.On the other hand, the quality of service which a single circuit is designed or conditioned to provide, e.g. voice grade or program grade is called the quality of service. Quality criteria for such circuits may include equalization for amplitude over a specified band of frequencies, or in the case of digital data transported via analogue circuits, may include equalization for phase. Criteria for mobile quality of service in cellular telephone circuits include the probability of abnormal termination of the call. | |
| 69776. |
Acidic medium on scale |
|
Answer» 0 to 6 Ph 0 to 6 0 to 7 On pH scale acidic medium is 0 to 6 |
|
| 69777. |
Electonic concept of redox reaction??? |
|
Answer» Oxidation is loss of electrons Reduction is the gain of electrons you should find yourself |
|
| 69778. |
In this app can we make a group to study with frnds. Plzz tell me |
|
Answer» Thnku to all But no we can\'t make a group. But we can try by requesting the mycbseguide to provide the option. Nice idea Ya nice idea How we can make a group to study in this app |
|
| 69779. |
What will happen if we mix mercury with water..... Which substance will form ? |
| Answer» Mercury does not react with water under normal conditions | |
| 69780. |
What happens when onion is added to acid and base? |
|
Answer» Paste or juice of onion loses its smell when added with base. It does not change its smell with acid It is onion when it is added to acid it\'s smell remains same but when it is added to base its odour diminishes. |
|
| 69781. |
How to draw magnetic field lines |
|
Answer» Following diagram shows the magnetic field lines around a bar magnet.The properties of magnetic lines of forces are:1) The direction of magnetic field lines outside the magnet sis from North Pole to South Pole.2) The direction of magnetic field lines inside the magnet is from south pole to the north pole.3) No two magnetic field lines intersect each other. From north to south of a magnet |
|
| 69782. |
What is electro and co valency |
| Answer» Dg | |
| 69783. |
A tank of water is 4m deep. How deep does it appear when see normally? |
| Answer» It appears 2 m deep | |
| 69784. |
What is light and it\'s characteristics. |
|
Answer» Light travel in straight line . Light casts shadow . the speed of light is 3 * 10 ^8 ms ^-1 Light is the form the energy ,,but ye exam me nhi Yes Ye light vale chapter ke ha |
|
| 69785. |
If a person eat rotten food,will HCl kill germs |
|
Answer» Yes but if it is not as more as rotten that HCL losses its killing capacity. Yes HCL present in stomach |
|
| 69786. |
Flow chart of transportation in humans |
| Answer» Working of Human blood circulatory system takes place in the steps below:(i) When the muscles of all the four chambers are relaxed, the pulmonary vein brings the oxygenated blood from the lungs in the left atrium of the heart.(ii) When the left atrium contracts, the oxygenated blood is pushed into the left ventricle through valve V1.(iii) When the left ventricle contracts, the oxygenated blood enters the main artery called aorta from which it goes to the different body organs through small branches called arterioles and capillaries.(iv) The main artery carries the blood to all the organs of the body head, arms etc except the lungs. The oxygenated blood gives off oxygen, digested food and dissolved materials to the body cells. The carbon dioxide produced in the cells enters the blood. The deoxygenated blood enters main vein called vena cava which carried it to the right atrium of the heart.(v) When the right atrium contracts, the deoxygenated blood enters right ventricle through valve V2.(vi) When the right ventricle contracts, the deoxygenated blood enters the lungs through pulmonary artery and releases carbon dioxide and absorbs fresh oxygen from air. The blood becomes oxygenated again and is sent to the left atrium of heart by pulmonary vein for circulation in the body. This whole process is repeated continuously. | |
| 69787. |
Flow chart of respiratory system |
| Answer» In human beings, air is taken into the body through the nostrils, is filtered by fine hairs that line the passage. When air passes through the nasal passage, the dust particles and other impurities present in it are trapped by nasal hair and mucus so that clean air goes into the lungs. From here, the air passes through the throat and into the lungs. Trachea does not collapse even when there is no air in it because it is supported by rings of soft bones called cartilage.Within the lungs, the passage divides into smaller and smaller tubes which finally terminate in balloon-like structures which are called alveoli. The alveoli provide a surface where the exchange of gases can take place. The walls of the alveoli contain an extensive network of blood-vessels. When we breathe in, the ribs are lift up and the diaphragm flattens which increases the size of the chest cavity. Because of this, air is sucked into the lungs and fills the expanded alveoli. The blood brings carbon dioxide from the rest of the body for release into the alveoli, and the oxygen in the alveolar air is taken up by blood in the alveolar blood vessels to be transported to all the cells in the body. During the breathing cycle, when air is taken in and let out, the lungs always contain a residual volume of air so that there is sufficient time for oxygen to be absorbed and for the carbon dioxide to be released. | |
| 69788. |
Flow chart of human digestive system |
| Answer» Digestion of food in human beings begins in the mouth. The mouth cavity contains teeth, tongue and salivary glands. The teeth cut the food into small pieces, chew and grind it. This is called physical digestion. Salivary glands produce saliva which mixes with the food. This involves chemical digestion of food. The saliva contains an enzyme called salivary amylase which digests the starch and converts it into maltose sugar. Mouth opens into a small funnel shaped area called pharynx which leads to a long tube called oesophagus. It carries the food down into the stomach. The wall of oesophagus is muscular. When the slightly digested food enters the food pipe, the walls of the oesophagus starts contraction and expansion movements called peristaltic movements which push the food into the stomach. Digestion does not take place in the oesophagus.The glands present on the walls of the stomach secrete gastric juice that contains hydrochloric acid, the enzyme pepsin and mucus. A small amount of gastric lipase is also present that breaks down the fats present in the food. Gastric juice is acidic due to the presence of HCl which is necessary for the pepsin to become active and converts the proteins into peptones. The mucus protects the stomach walls from HCl. From the stomach, the partially digested food goes into the small intestine through sphincter muscle. Small intestine is divided into two parts: Duodenum and Ileum.Duodenum receives the secretions of two glands, liver and pancreas through a common duct. Liver secretes bile which is alkaline and contains salts to emulsify the fats (or lipids). The bile secreted by the liver is stored in the gall bladder. Pancreas secretes pancreatic juice which contains trypsin, lipase and pancreatic amylase. Trypsin digests the proteins, lipase emulsifies the fats and pancreatic amylase breaks down the starch. Thus, small intestine is the site of complete digestion of carbohydrates, proteins and fats. The walls of ileum secrete succus entericus which completes the digestion process.The walls of small intestine has finger like projections like villi which increases the surface area for absorption. The villi are richly supplied with blood vessels which take the absorbed food to each and every cell of the body, where it is utilised for obtaining energy, building up new tissues and the repair of old tissues. | |
| 69789. |
Explain the diagram |
|
Answer» Diagram starts with \' D \' and ends with \'M\'..?? Sorry not where is the diagram? |
|
| 69790. |
Flow chart of excretory system |
|
Answer» Ok thanks T.S ? Ok thanks T.S ? |
|
| 69791. |
2021 mein kitne percent aayega math mein MCQ |
| Answer» Pata nahin | |
| 69792. |
bhai tum logo ka kitna syllabus cover ho gaya |
|
Answer» Wow.. Mera abhi baacha h bhai mara to pura syllabus complete ho gaya Bahot jada |
|
| 69793. |
The decomposition reaction of silver chloride is used in (..............) |
| Answer» photographic films | |
| 69794. |
Which animal is breath without visible moment? |
| Answer» salminicolasalminicola is the only known animal on Earth that does not breathe. If you spent your entire life infecting the dense muscle tissues of\xa0fish\xa0and underwater\xa0worms, like H. salminicola does, you probably wouldn\'t have much opportunity to turn oxygen into energy, either. | |
| 69795. |
What is oxidatiom |
|
Answer» The removal of hydrogen and addition of oxygen in known as oxidation ..and the substance which oxidise the hydrogen is known as oxidising agent Oxidation is any chemical reaction that involves the moving of electrons. Specifically, it means the substance that gives away electrons is oxidized. Normally, this is a reaction between oxygen and a substance such as iron.When iron reacts with oxygen it forms a chemical called rust because it has been oxidized (the iron has lost some electrons) and the oxygen has been reduced (the oxygen has gained some electrons).Oxidation is the loss of electrons.In terms of oxygen transfer, oxidation may be defined as the chemical process in which a substance gains oxygen or loses electrons and hydrogen. |
|
| 69796. |
What is Black hole??? |
|
Answer» Thank you so much A black hole is a region in space where the pulling force of gravity is so strong that light is not able to escape.. I hope it will help you...keeping smiling...? |
|
| 69797. |
Wood is a processed fuel .it is true or false |
|
Answer» False False False |
|
| 69798. |
WOOD is a liquid fuel . it is true or false |
|
Answer» Wood is a solid fuel not a liquid fuel False False False False |
|
| 69799. |
Wood is a secondary fuel . it is true or false |
| Answer» Wood fuel\xa0(or fuelwood) is a\xa0fuel\xa0such as firewood, charcoal, chips, sheets, pellets, and sawdust. ... The use of\xa0wood\xa0as a\xa0fuel\xa0source for heating is much older than civilization and is assumed to have been used by Neanderthals. Today, burning of\xa0wood\xa0is the largest use of energy derived from a solid\xa0fuel\xa0biomass.\xa0Secondary fuels\xa0are\xa0fuels\xa0that are derived from some primary\xa0fuel\xa0or\xa0fuels\xa0through chemical or physical processes. These are\xa0fuels\xa0that are not found as a natural resource. ... This means that\xa0secondary fuels\xa0are often an intermediate form of energy between the primary energy and the energy services. | |
| 69800. |
What is a secondary fuel pool fuel |
| Answer» | |